Weather Reports 2008/9 

   
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Was August 2008 really the wettest you can remember - Gary Beynon puts it all in perspective ....

AUGUST 2008

How well do you remember the weather from one year to the next ? I suspect we all remember the extremes and in our minds these quickly become the pattern for a particular period of time. What about August 2007 compared with 2008 or indeed other "wet" years ?

Here are the facts.

    1992 2004 2008
Rainfall   149.5mm 126.3mm 106.1mm
Days with rain   21 23 22
Maximum temperature   23.0°C 27.0°C 25.4°C
Average maximum temperature   18.0°C 19.0°C 21.4°C
Minimum temperature   4.0°C 8.0°C 9.0°C
Average minimum temperature   9.5°C 13.0°C 13.5°C
Days above 20°C   9 20 28
         

Conclusion:  2008 wasn’t as bad as it might have been !

The rainfall for the last 27 years in August is shown below. As you can see the average over 27 years is 69 mm so 2008 was well above average but by no means the highest. I hope to keep you updated on a monthly basis.

These figures are from my amateur weather station in Hyde Heath and unfortunately the set up does not meet the very stringent criteria set by the Met Office but are nevertheless very good indicators and comparisons.

Gary Beynon
Sept 1st 2008
 

SEPTEMBER 2008 WEATHER

 

What a month of contrasts! Wet at the start and then dry from mid month onwards. Didn’t feel that warm though. Where was the Indian summer that we were promised? How did September 2008 compare with other years?

Here are the facts:                                 

    2007 2008
Rainfall mm   30.6 72.2
Days with rain   7 16
Maximum temperature   23șC 20șC
Average maximum temperature   18.9șC 18.1șC
Minimum temperature   5.0șC 6.7șC
Average minimum temperature   9.7șC 10.3șC
Days above 20°C   16 3
       

Conclusion:  2008 was wetter, cooler and didn’t really come up to expectations !

The rainfall for the last 27 years in September is shown below. As you can see the average over 27 years is 70 mm so 2008 was very much on average but you can see the considerable variation that we have experienced.

Gary Beynon
Oct 1st 2008

 

October 2008

Snow in October! Bit of a shock to the system and to the roads. I can’t find a reference in my records (going back to 1981) to snow this early in the year. Does anyone have anything before that? The Met Office have said that the last snow to fall in London was back in 1934 but things can be a little different in the wilds of the Chilterns. From the data below you will see that on average conditions were very similar to October last year.

 

 

 

 

 

 

 

 

 

 

 

 

 

Here are the facts :

    2007 2008
Rainfall mm   50.1 68.3
Days with rain   11 15
Maximum temperature   18șC 19șC
Average maximum temperature   13.9șC 13.71șC
Minimum temperature   2.0șC -1.7șC
Average minimum temperature   7.2șC 4.9șC
Days above 15°C   13 12
Days with visible frost   4 7

The rainfall for the last 27 years in October is shown below. As you can see the average over 27 years is 91mm so 2008 was below average but you can see the considerable variation that we have experienced over the years.

Gary Beynon
Nov 1st 2008

 

Text Box:

November 2008

The weather is always a topic for conversation especially in the UK and even more so when there are extremes. What about November 2008? Pretty average as Novembers go but what is “average”?

The rainfall was almost exactly on average but when you look at the variations over the years, to be on the average is purely coincidental. Maximum, minimum and mean temperatures were all very similar to last year. There were 22 days with recordable rainfall (16 in 2007). For me, the main characteristic of this November was that there were too many days when the sun didn’t appear. It was DULL!

 

    2007 2008
Rainfall mm   84.3 89.3
Maximum temperature   16șC 14șC
Average maximum temperature   10.2șC  9.8șC
Minimum temperature   -1șC  -1șC 
Average minimum temperature   3.95șC  4.4șC
Days with snow   1 on 18th  1 on 22nd 

 

Gary Beynon
Dec 1st 2008

Weather for December 2008

I wonder what we will remember about the weather in December 2008? It was actually a very variable month with 2 days reaching 12.6șC and some minimum temperatures that were dramatically higher than the maximum ones we are currently experiencing. It was also a very dry month with 13 days at the end with just 1 day when I recorded “trace” for rainfall. (This is a time when you know that there has been precipitation but it is not measureable.) There was no snow but there were a lot of frosts that covered the cars with thick layers of ice.

Here is the data with a comparison for 2007 :                                              

    2007 2008
Rainfall   69.6 mm 41.9 mm
Days of rain     16  13
Max temp.    13.6șC 12.6șC
Mean max.   7.5șC 6.0șC  
Min temp.   -3șC -3șC 
Mean min   2.6șC 1.75șC  
Days of frost    11  17  

That brings us to the end of another year and I have included the annual rainfall for 2008 and the comparative figures (in graph form) since 1981. 906 mm in the year made it wetter than average but not the wettest that I have recorded. The “linear” line is a trend line over the years. It does show an increase but there is probably insufficient data for this to be statistically meaningful. The rainfall over the 6 winter months is a good indication of the amount of water reaching the water table. I will report on that at the start of April.

 

 

Gary Beynon
Jan 6th 2009

JANUARY 2009 WEATHER 

Yet another month that goes a long way to prove that the UK weather can vary enormously over a very short period of time. Following 10 days with a frost overnight at the start of the month, and maximum temperatures of 4șC but mostly at 2ș or below, the temperature then jumped to 9șC and remained ”high” for 21 days to the end of the month. There were many frosts at night however. Summer, or Spring at least, had not come and, as I write this the SNOW is falling heavily. I do not envy the poor weather forecaster; things are so variable and so unpredictable. The rainfall was just about dead on average but, look at the graph, the variation from one January to the next is quite dramatic.

 

January Statistics   2009 2008
Rainfall   76.8mm 120.9mm
Days of rain    16 (4 with snow/sleet) 21
Max temp.    9șC 13șC
Mean max.   5.52șC 9.15șc
Min temp.   -6șC 2șC
Mean min   0.3șC 3.83șC
Days of frost   20 0

 

 

 

Gary Beynon
Feb 2nd 2009

FEBRUARY 2009 WEATHER 

Another month of contrasts. It started off cold and finished a good deal warmer; well all things are comparative and perhaps “less cold” would be a better description. But we did have snow and we didn’t cope with it. This is hardly surprising when you consider how little snow and how infrequently we have it in this part of the world. It is actually very difficult to translate a depth of snow into the equivalent rainfall. Even when you allow the snow in the gauge to melt, the amount can be so very dependant upon the type of snow (as the railways know!) and the way in which the wind swirls it about. A general rule of thumb is that 12 inches of snow depth is equivalent to 1 inch of rainfall. Bearing in mind that we had snow on 9 days in February, it is just as well that all the snow didn’t settle, that much was wet and therefore the depth didn’t accumulate. 

Here is the data.                                     

February Statistics   2009 2008
Rainfall   74.8mm 20.4mm
Days with rain    7 8
Days with snow   9 0
Max temp.    13șC 14șC
Average max temp    7.4șC  9.6șC
 - but days   1 - 14    4.18șC  
         days 15 - 28    10.57șC  
       
Min temp.    - 4șC  - 4șC
Average min temp   2.4șC 1.8șC
 - but days   1 - 14   -0.98șC  
         days 15 - 28   5.46șC  
       
Days of frost   11 13

The February rainfall chart is below.

Gary Beynon
March 8th  2009

MARCH 2009 WEATHER

Yet another month of contrasts with rain to start and a very long dry period through the middle. It was actually a comparatively dry month with rainfall below average and nearly half the rainfall coming on one day. There were also many mornings when we woke to see frost on the cars but fortunately, as the roads were generally dry, there were none of the black ice problems we had in February. It was, I think, a very pleasant month with the daytime warmth bringing on the buds and getting things started in the garden. Certainly the farmers were pleased at the dry spell that has allowed them to plough, harrow and drill all in the space of less than two weeks. No doubt they would now like some rain!

We have now completed the 6 months that are important to the replenishment of the water table; most of the rain from now on will go back into the atmosphere through the plants and trees or by evaporation. I have included a graph to show the winter rainfall over the years. Hose pipe restrictions this year? Probably not----but don’t hold me to it!

 

March Statistics   2009 2008
Rainfall    29.5  102.1 
Days with rain    15    24 (6 snow)
       
Max Temp șC      15 16
Mean max  șC      12.2 10.3
       
Min Temp  șC    -0.4 -1.6
Mean min   șC    3.3 3.4
       
Days of frost   15 10

March Rainfall below :      

 

Winter Rainfall - October - March below:

 

Gary Beynon
April 8th  2009

HYDE HEATH WEATHER APRIL 2009  

April was a dry month with quite a lot of sunshine and some not unreasonable temperatures. I suspect that the farmers were looking for rain by the end of the month as the spring crops weren’t doing a great deal. Driving over some of the farm tracks up at Shardeloes sent a cloud of dust up which is not really what one expects at this time of the year. The Misbourne however is quite full with water alongside the Link Road carpark in Great Missenden and both lakes in Lower Park full to the top. The temperature range was high with a maximum of 20șC and a minimum of 2.4șC, not that different from 2008. There is only one aspect of our British weather that we can rely on---it is very variable and constantly surprises!

 

April Statistics   2009 2008
Rainfall   36.6mm 59.0mm
Days with rain    12 20
       
27 year average rainfall   64 mm
Wettest year   108 mm - 1993
Driest year   2.6 mm - 2007
       
Max Temp șC      20 21
Mean max  șC      16.33 14
       
Min Temp  șC    2.4 - 0.5
Mean min   șC    6.4 4.8
       

April rainfall since 1981 is shown below.

  

Gary Beynon
May17th  2009

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Hyde Heath Weather May 2009 

May is now the third consecutive month of low rainfall especially when compared with last year. March, April and May have only seen 98.8 mm compared with 241.1 mm in the same period in 2008. I suspect that we all realise this when you consider just how hard the ground is and the somewhat slow growth of the Spring crops in the fields. Apart from the rainfall, May across the 2 years show some very similar statistics on average. What is a little different is the pattern between the years. In 2008 it was the first two weeks of May that saw temperatures reaching 26șC whereas we had to wait until the very end of the month this year before seeing something similar. The rainfall pattern was the same; in 2008 most of the rain came in the last 7 days whereas this year, what there was, came mostly on Thursday 14th. Nothing is predictable is it?

 

May Statistics   2009 2008
Rainfall   32.7mm 75.0mm
Days with rain    12 14
       
Max Temp șC      25șC 26șC
Mean max  șC      19.42șC 19.59șC
Days above 20șC   12 16
Min Temp  șC    5șC 4șC
Mean min   șC    8.82șC 9.58șC
       

 

The rainfall graph for May over the past years is shown below.

Gary Beynon
June 11th  2009

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Hyde Heath Weather June 2009

This June certainly had something about it that will keep it in our memories for a short time at least. I refer of course to the high temperatures of the last 6 days. Is there a point where we notice the higher temperature or is it dependant upon what has already going on ? Can we become used to something different? I suspect that we do become acclimatised to temperature, we can get used to higher temperatures but those in the upper 20s take some getting used to especially in this country where the humidity tends to be quite high. (It has nothing to do with the fact that once abroad in high temperatures—and lower humidity—there is often the sea or a pool; or has it ! ? ).

June 2009 compared with 2008 shows actually a very consistent picture. Rainfall, mean temperatures, lowest temperature were all very consistent; just that surge up to 29.7șC on the 29th that stands out.

 

June Statistics   2009 2008
Rainfall   52.7mm 53.5mm
Days with rain    15 12
       
Max Temp șC      29.7șC 26șC
Mean max  șC      22.3șC 21.3șC
       
Min Temp  șC    6șC 8șC
Mean min   șC       
       

 

                  The rainfall data all looks very average but as you can see from the graph below, there have been some very wet June months in the past.

 

Gary Beynon
July 14th  2009

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Hyde Heath Weather - JULY 2009

 

July was hardly a month that we will want to remember! Best described as wet and not a great deal else to commend it. Purely on the figures alone, it was actually not much different from July in either 2008 or 2007. But figures don’t always show the full picture. Rainfall wise all 3 years were wet but the difference was in the number of days when rain fell and its intensity. Temperature wise there was not a lot to choose between them. In 2009 the best part of the month was when we were away; it just got worse from then on.

What of August ? I thought that if I left this report long enough, I could “forecast” August’s weather. I am not that brave---or stupid!

 

July Statistics   2009 2008
Rainfall   101.2mm 97.1mm
Days with rain    24 14
Wettest Day   13.7mm 25.3mm
Days with rain   24 14
Max Temp șC      29.6 28.6
Mean max  șC      22.76 23.1
       
Min Temp  șC    9.4 9.0
Mean min   șC    12.84 12.9
       
No days above 20șC    29 28

 

Gary Beynon
August 12th  2009

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AUGUST 2009 WEATHER

 This last August was at least better than August 2008; but that’s not saying a great deal! It was drier, the maximum temperatures were higher but it was still disappointing and hardly came up to what we were promised/predicted some months back. On 17 of the days I have recorded rather a lot of cloud. Still if you can remember back to the 1950s---and some of us can---summers then also seemed to be wet. I have vivid memories of holidays in Paignton listening to the rain pouring down and coming home early because it was
so bad. We have though been more fortunate than the West Country and Wales; they have a worse time than us in August.

August Statistics   2009 2008
Rainfall   44mm 106.1
Days with rain    13 22
       
Max Temp șC      27șC  25.4șC 
Mean max  șC      23.05șC  21.4șC 
       
Min Temp  șC    9.0șC  9.0șC 
Mean min   șC    12.91șC  13.50șC 
       


The rainfall chart is below                

 

Gary Beynon
Sept 17th  2009

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SEPTEMBER 2009 WEATHER

 

I have been looking to see what the official definition of a drought is from the Met. Office. Can’t find it! I do remember that it is a certain number of days without measurable rain. How many days? Forgotten! However, September this year must have come pretty close to the official definition. It rained on 3rd and there was nothing of real note then until 1st October. True that there were 3 days around the middle of the month with rain but it only amounted to a total of 1.2mm. You only need to look at the way that the grass hardly grew, the brown patches started to appear and the areas under the trees showed no signs of moisture at all. It was the driest September for 12 years. Add it all of that the warm temperatures and it was a rather pleasant month. Certainly better than average and a big improvement on 2008 and the earlier parts of our summer. Here are the facts:-

 

September Statistics   2009 2008
Rainfall   17.1 mm  * 72.2 mm
Days with rain **   8 16
       
Max Temp șC      25.5 șC  20.0 șC 
Mean max  șC      19.2 șC  18.1 șC 
       
Min Temp  șC    7.0 șC  7.0 șC 
Mean min   șC    10.5 șC  10.3 șC 
       
Days  with temp >20 șC    7 3

 

 *         of this 17.1 mm 15.9 mm fell in the first 3 days of the month

 * *       ie anything measurable including ”trace” where you can’t measure it but there was some, albeit minimal, precipitation

Gary Beynon
Oct 14th  2009

October 2009 weather

 

As I write this report (14th November) we have just had 2 days of rainfall that, at 42.1mm, very nearly equals the total rainfall in October of this year of 43.3mm. The one fact that you can forecast about the weather is that it will be unpredictable! October was a quiet month; there really was nothing extreme about it. It rained but there was not a great deal, the temperatures were pleasant with no frosts and the garden showed the effects by things not dying back and indeed we picked runner beans well into the month. I felt that the autumn colours were quite something; such a variation and we were so lucky that they lasted for a long time. The lack of rain left the ground hard and, may I remind you that it is the 6 months from October to March that we rely on to fill up the aquifers. This period has not started well (but November is making up ground fast!).October last year was special in that it snowed on the 28th . The actual data is below with some comparisons from the past.

 

October Statistics   2009 2008
Rainfall mm   43.3 68.3
28 year average rainfall   83.4
       
Max Temp șC      18.4 19.0
Mean max  șC      15.17 13.70
       
Min Temp  șC    3.00 -1.00
Mean min   șC    7.97 4.90
       
Days  with temp >15 șC    20 12

 

The October rainfall graph is shown below.

 

Gary Beynon
November 14th  2009

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NOVEMBER 2009 WEATHER

 

November was wet! I doubt anyone will disagree with that statement; but compared with Cumbria we escaped very lightly. It was not the wettest month I have recorded since I started to keep the data in 1981 but it is well up the leader board. The wettest I have was in October 1987 when we had 190.4 mm and the wettest November was 2002 at 168.5 mm. What is perhaps more unusual was that there was a recordable amount of rain every day of the month. (Recordable in weather terminology means something less than 0.1mm and is recorded as “trace”.) In fact there has been rain since October 30th. 32 days of rain; little wonder that the ground is wet but the lake opposite the Chiltern Hospital is well down, presumably due to water extraction by Veola. Other than the rainfall it was not a particularly remarkable month. It was really rather mild with 2 air frosts and just the 1 day of a minus temperature (early this morning the 1st December----yes December but I record the data at 0800 hrs each day and it refers to the previous day which is standard practice).  

The facts and figures

November Statistics   2009 2008
Rainfall mm   165.90 89.30
Days of rain   30 22
       
Max Temp șC      16 14
Mean max  șC      11.11 9.80
       
Min Temp  șC    -0.30 -1.00
Mean min   șC    5.75 4.40
       
Days  with temp >15 șC    1 0
Days  with temp <10 șC    8 13

                                                

The rainfall chart for November 1981 to 2009 is shown below.

Gary Beynon
November 14th  2009

 

DECEMBER 2009 WEATHER REPORT 

Do I dare talk about the weather after what we have been experiencing during the last week or so? If you don’t want to know the result, please turn off the volume and close your eyes now. Return round about June when-hopefully-the weather will be a deal more pleasant.

It was wet, it was cold, we had snow before Christmas and all in all there was little to recommend December. Chris asked if I could look at the records to see if the winters were getting snowier; I am part way through compiling the data. My recommendations for snow chains or hibernation will appear shortly. Compared with 2008, this last December  was a lot wetter but average temperatures were similar.

The rainfall over the full year was less than the previous 4 years but very close to the average for the last 28 years.

 

December Statistics   2009 2008
Rainfall mm   118.4 41.9
Days of rain/snow   24 13
       
December average rainfall mm   78.42
       
Total rain for the year mm   793 906
Average rainfall over period 1981 - 2009 (28 years) mm   781.85
       
Max Temp șC      11.7 12.6
Mean max  șC      5.9 6.0
       
Min Temp  șC    -5.7 -3.0
Mean min   șC    0.68 1.75
       

The rainfall graphs are shown below.

 

 

Gary Beynon
January 14th 2010

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