November 2008
The Okement Valley east of Okehampton on a warm and humid October day.
An autumnal landscape on Dartmoor.
Summary for   November 2008
Mean Max: 10.7ºC (-0.7ºC)
Mean Min: 5.6ºC (+0.6ºC)
Mean: 8.1ºC (-0.1ºC)
     
High Max: 14.0ºC 8th
Low Max: 3.3ºC 29th
High Min: 10.7ºC 15th
Low Min: -1.9ºC 29th
Mean Grass Min: 3.0ºC  
Grass Min: -4.0ºC 29th
     
Rain Total (gauge): 79.2 mm (127%)
Rain Total (tipping bucket): 79.1 mm (127%)
Rain Days >0.2 mm: 21 Days  
Rain Days >1.0 mm: 10 Days  
Max 24 hrs: 19.7 mm 8th
Days without any rain: 9  
     
Air Frost: 3 Days  
Ground Frost: 7 Days  
Snow Falling: 0 Days  
Snow (50%) @ 9am: 0 Days  
Thunder Heard: 0 Days  
Hail <5 mm: 0 Days  
Hail >5 mm: 0 Days  
Fog @ 9am: 0 Days  
     
Total Monthly Sunshine: 74h:16m  
Total Monthly Sunshine: 74.0 Hours  
Most Sunshine in a Day: 07h:55m 25th
Average Daily Sunshine: 02h:28m  
Sunless Days: 5 Days  
Cloudless Days: 1 Days  
Total Possible Sunshine: 268h:41m  
Percentage of Total Sun: 28%  
     
Mean Soil Temp @ 30 cm: 7.9ºC  
Min Soil Temp @ 30 cm: 4.8ºC 30th
Max Soil Temp @ 30 cm: 10.0ºC 17th
Mean Soil Temp @ 100 cm: 9.1ºC  
Min Soil Temp @ 100 cm: 8.1ºC 30th
Max Soil Temp @ 100 cm: 10.1ºC 22nd
     
Mean 10 Min Wind >39 mph: 0.1 Days  
N: 5.80 Days  
NE: 1.65 Days  
E: 0.42 Days  
SE: 1.40 Days  
S: 3.31 Days  
SW: 3.66 Days  
W: 7.60 Days  
NW: 4.04 Days  
Calm: 2.13 Days  
Mean Wind: 4.9 mph  
Max Gust: 40 mph 23rd
     
Mean Cloud Cover: 64%  
Mean RH @ 9am: 87%  
Rain Duration >0.1mm/hour: 40.3 Hours  
Frost Duration: 16.0 Hours  
Max Frost Duration in a Day: 7.5 Hours 29th
     
Mean Sea Temperature: 11.7ºC  
Normal for Month:    
Max Sea Temperature: 12.5ºC 1st
Min Sea Temperature: 10.2ºC 30th
     
Mean Pressure @ 9am: 1016.4 hPa (+0.7 hPa)
Mean Pressure: 1014.3 hPa (-1.4 hPa)
Max Pressure: 1034.4 hPa 17th
Min Pressure: 990.7 hPa 24th
     
Max Dewpoint: 11.2ºC 15th
Min Dewpoint: -4.2ºC 26th
Mean Dewpoint: 5.1ºC  
     
Max Humidity: 93% 13th
Min Humidity: 63% 25th
Mean Humidity: 83% (-3)

Cool and wet to start but soon became much warmer and the warmth lasted until the final week of the month when there were a few air frosts at night. A little wetter than normal and sunshine levels were just a little below average. Quite dull around mid-month but the 3rd week was sunny and settled.

Apart from the first few days and the last week, the temperatures were generally above the long-term average for the majority of the month. The cold start and end dragged the mean temperature down considerably but despite this the month ended up around average temperature-wise.

The majority of the rainfall fell in the first two weeks, after that the rainfall still remained frequent but was very light.
The first air frost of the month occurred on the 26th.
Sunshine levels were just slightly less than average..
Soil temperatures recovered slightly after the now infamous 'Great Ottery Hailstorm' in October, then started to fall again during the last week of the month.
Winds dominated from the north and north-west sectors. Despite this the month was not cold overall with temperatures around or just slightly below average.
There were 3 air frosts which amounted to a total time of 16 hours with temperatures below 0°C.
Sea temperatures fell gradually throughout the month and on the whole were around average or slightly below average, especially at the end of the month.
Mean pressure was 0.3 hPa above normal.
Dewpoints were significantly low at times during the final week of the month as dry, cold air fed down from the north.
This cold, Arctic air at the end to the month meant relative humidity ended up being below normal.
 
Weather Data for Otter Valley, Devon.  November 2008  
  Temp (oC) Hum (RH%) Dewpoint (oC) Wind (mph) Rain Pressure (hPa) Grass Sun  
  Min Max Ave Min Max Ave Min Max Ave Max Ave Run mm Min Max Ave Min Hours Observations
1 1.9 7.0 4.5 80 89 85 -0.4 4.7 2.2 25 7.2 172 4.6 1006 1010 1008 0.3 2.7 Brief sunny ints am, rain pm
2 6.2 8.5 7.4 82 89 86 3.9 5.5 4.7 25 8.9 213 5.4 1007 1016 1012 5.1 2.1 Cloudy am, sunny ints pm
3 7.7 11.3 9.5 77 88 83 4.9 7.6 6.3 24 6.7 161 0.2 1013 1016 1015 6.2 2.4 Sunny intervals all day
4 8.6 12.2 10.4 79 90 85 6.0 8.9 7.5 16 4.6 111 0.0 1016 1019 1017 5.6 0.8 Cloudy am, sunny ints pm
5 7.8 13.1 10.5 73 89 81 5.3 9.2 7.3 14 3.7 89 0.0 1018 1019 1019 4.4 2.6 Sunny intervals all day
6 8.5 11.3 9.9 82 89 86 5.7 8.2 7.0 9 1.1 25 0.0 1009 1019 1014 5.7 0.0 Cloudy all day
7 6.3 12.7 9.5 64 90 77 3.2 9.2 6.2 24 5.0 121 2.8 1003 1009 1006 3.4 6.9 Sunny intervals all day
8 7.4 14.0 10.7 74 92 83 3.3 10.5 6.9 30 7.0 137 16.4 1000 1009 1005 3.4 3.1 Sunny intervals all day
9 5.1 12.3 8.7 75 89 82 2.3 9.6 6.0 33 7.3 161 3.6 1002 1011 1006 3.4 0.2 Showers, brief sunny ints
10 6.9 11.7 9.3 75 91 83 4.2 8.3 6.3 28 4.3 104 16.4 1000 1007 1004 5.4 0.0 Heavy rain am, cloudy pm
11 7.3 11.5 9.4 66 88 77 3.3 6.5 4.9 24 4.8 114 2.8 1001 1013 1007 1.0 6.9 Sunshine & showers
12 1.7 11.7 6.7 73 92 83 -0.7 8.6 4.0 13 1.3 31 0.6 1013 1023 1018 -0.9 6.5 Sunny intervals all day
13 2.0 11.4 6.7 85 93 89 -0.1 9.7 4.8 12 1.3 31 5.2 1022 1024 1023 -0.4 0.0 Rain all day
14 10.3 12.2 11.3 83 93 88 8.3 10.0 9.2 17 4.0 96 0.4 1023 1027 1025 7.8 0.0 Cloudy all day
15 10.7 13.9 12.3 83 91 87 8.2 11.2 9.7 18 3.9 94 0.2 1027 1030 1028 8.8 1.1 Brief sunny intervals all day
16 9.5 13.0 11.3 87 91 89 7.4 10.5 9.0 19 3.9 93 0.6 1030 1033 1032 8.7 0.5 Brief sunny intervals all day
17 9.2 11.9 10.6 80 92 86 7.3 9.7 8.5 15 2.3 56 1.0 1019 1034 1027 7.1 0.2 Drizzle am, sunny ints pm
18 6.1 12.2 9.2 73 91 82 4.7 9.0 6.9 24 5.8 139 0.8 1014 1024 1019 4.6 5.8 Sunny intervals all day
19 4.4 13.1 8.8 66 91 79 2.4 8.8 5.6 24 5.4 129 0.0 1022 1025 1023 2.0 7.5 Sunny intervals all day
20 8.4 13.6 11.0 76 90 83 5.3 9.9 7.6 28 8.2 198 0.0 1020 1023 1021 5.1 2.7 Sunny intervals all day
21 9.1 12.0 10.6 67 90 79 3.1 9.8 6.5 32 10.9 263 0.4 1016 1020 1018 5.4 2.8 Sunny intervals all day
22 6.6 9.3 8.0 71 83 77 2.4 5.1 3.8 25 7.4 177 0.4 1018 1021 1020 3.7 0.8 Sunny intervals all day
23 4.8 10.1 7.5 68 91 80 1.5 8.1 4.8 40 6.5 156 3.4 995 1019 1007 3.5 3.3 Rain then sun & showers
24 4.4 7.2 5.8 66 87 77 -0.7 2.7 1.0 26 7.1 171 0.2 991 1014 1002 -0.8 0.9 Sunny intervals all day
25 -0.8 7.4 3.3 63 87 75 -3.7 2.1 -0.8 20 4.3 102 0.0 1014 1029 1021 -3.4 7.9 Sunny all day
26 -1.8 9.8 4.0 78 90 84 -4.2 7.6 1.7 5 0.2 4 0.0 1025 1030 1028 -3.9 0.0 Cloudy all day
27 7.1 12.1 9.6 71 90 81 4.7 8.0 6.4 21 3.4 82 0.8 1007 1025 1016 2.6 1.6 Sunshine & showers
28 1.2 7.2 4.2 81 91 86 -1.3 4.9 1.8 4 0.1 3 0.0 996 1007 1001 -1.1 3.2 Sunny intervals all day
29 -1.9 3.3 0.7 85 90 88 -3.8 0.8 -1.5 18 2.9 70 0.2 992 996 994 -4.0 1.3 Brief sunny intervals all day
30 2.6 4.6 3.6 75 87 81 -1.6 0.7 -0.5 23 6.8 164 0.0 993 1000 997 1.8 0.4 Brief sunny intervals all day
5.6 10.7 8.1 75 90 83 2.7 7.5 5.1 21 4.9 3465 66.4 1010 1018 1014 3.0 74.0  

Graphs for November 2008
Figure 1. Temperature and Rainfall for November 2008.
Figure 2. Sunshine, air pressure and mean wind speed for November 2008.
Figure 3. Wind direction for November 2008.
Figure 4. Soil & sea surface temperature (SST) for Lyme Bay for November 2008.
Figure 5. Wind run, maximum gusts and mean pressure for November 2008.