February 2010

A dramatic Dartmoor sky on an inspiring February day.
A dramatic Dartmoor sky on an inspiring February day.
Summary for  February 2011
Mean Max: 10.5ºC (+1.9ºC)
Mean Min: 5.3ºC (+2.5ºC)
Mean: 7.9ºC (+2.2ºC)
     
High Max: 14.3ºC 24th
Low Max: 7.3ºC 28th
High Min: 11.1ºC 5th
Low Min: -1.4ºC 1st
Mean Grass Min: 3.0ºC  
Grass Min: -6.4ºC 28th
     
Rain Total (gauge): 70.5 mm (92%)
Rain Total (tipping bucket): 68.6 mm (90%)
Rain Days >0.2 mm: 16 Days  
Rain Days >1.0 mm: 13 Days  
Max 24 hrs: 17.8 mm 13th
Days without any rain: 12  
     
Air Frost: 2 Days  
Ground Frost: 10 Days  
Snow Falling: 0 Days  
Snow (50%) @ 9am: 0 Days  
Thunder Heard: 0 Days  
Hail <5 mm: 2 Days  
Hail >5 mm: 0 Days  
Fog @ 9am: 0 Days  
     
Total Monthly Sunshine: 52h:27m  
Total Monthly Sunshine: 53.4 Hours (66%)
Most Sunshine in a Day: 5.8 Hours 19th
Average Daily Sunshine: 1.9 Hours  
Sunless Days: 6 Days  
Cloudless Days: 1 Days  
Total Possible Sunshine: 280h:55m  
Percentage of Total Sun: 19%  
Maximum UV Index: 3 26th
Average UV Index: 1.1  
     
Mean Soil Temp @ 30 cm: 6.2ºC  
Min Soil Temp @ 30 cm: 2.5ºC 1st
Max Soil Temp @ 30 cm: 8.3ºC 26th
Mean Soil Temp @ 100 cm: 6.4ºC  
Min Soil Temp @ 100 cm: 4.7ºC 2nd 
Max Soil Temp @ 100 cm: 7.7ºC 27th
     
Mean 10 Min Wind >39 mph: 0.00 Days  
N: 0.89 Days  
NE: 1.44 Days  
E: 5.02 Days  
SE: 6.81 Days  
S: 4.93 Days  
SW: 3.22 Days  
W: 3.57 Days  
NW: 1.14 Days  
Calm: 3.99 Days  
Wind Chill Low: -4.1ºC 1st
Mean Wind: 5.7 mph  
Max Gust: 36 mph 15th
     
Mean Cloud Cover: 73%  
Mean RH @ 9am: 86%  
Rain Duration >0.1mm/hour: 50.3 Hours  
Frost Duration: 11.5 Hours  
Max Frost Duration in a Day: 5.8 Hours 1st
     
Mean Sea Temperature: 7.8ºC (-0.3ºC)
Normal for Month: 8.1ºC  
Max Sea Temperature: 8.7ºC 24th
Min Sea Temperature: 6.9ºC 2nd 
     
Mean Pressure @ 9am: 1013.7 hPa (-1.4 hPa)
Mean Pressure: 1013.7 hPa (-1.4 hPa)
Max Pressure: 1032.2 hPa 28th
Min Pressure: 984.4 hPa 15th
     
Max Dewpoint: 11.6ºC 23rd 
Min Dewpoint: -2.8ºC 1st
Mean Dewpoint: 5.4ºC  
     
Max Humidity: 98% 1st
Min Humidity: 54% 26th
Mean Humidity: 85% (+1)

 

Winter ends with an extremely warm February after a very cold December, and a cool January.

Temperatures during February remained at average or above throughout leading to one of the warmest Februaries on record.
Rainfall was slightly below average.
Only 2 air frosts and both of these were slight. Several very clear, calm nights led to 10 grass frosts. As with January, no snow was seen falling or lying at any point during the month.
Sunshine levels were extremely disappointing throughout the month making this February the dullest month in the station record with only 66% of the average.
Soil temperatures were well below normal at the beginning but ended up slightly above normal.
Winds were dominant from a south-easterly direction.
Rainfall duration was only 50 hours and cloud amounts were record-breakingly high.
Sea temperatures gradually recovered from low levels at the beginning of the month. Even so, they ended up being slightly below normal despite the warm February.
Mean pressure was rather below average for February.
Dewpoints were above average.
The RH ended up being slightly above normal.
Weather Data for Otter Valley, Devon.  February 2011  
  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 -1.4 10.6 4.6 76 98 87 -2.8 8.0 2.6 18 2.1 49 0.0 1025 1029 1027 -2.3 4.6 Cloudy am, sunny pm
2 -1.3 10.6 4.7 88 91 90 3.3 7.4 5.4 20 3.3 79 1.8 1021 1030 1025 0.0 2.2 Sunny intervals all day
3 0.5 9.9 5.2 75 76 76 5.1 6.0 5.6 25 4.2 101 0.0 1020 1027 1023 6.5 1.0 Cloudy am, sunny ints pm
4 10.2 12.2 11.2 67 79 73 5.7 7.4 6.6 34 11.3 272 0.0 1018 1020 1019 9.1 0.2 Cloudy am, sunny ints pm
5 11.1 13.0 12.1 69 87 78 7.1 8.4 7.8 28 10.1 241 0.0 1018 1020 1019 9.5 0.0 Cloudy all day
6 10.3 11.4 10.9 73 75 74 5.4 5.9 5.7 35 11.2 270 0.4 1019 1021 1020 9.0 0.1 Cloudy am, bright pm
7 9.2 10.7 10.0 62 92 77 2.0 9.4 5.7 30 8.8 211 0.7 1011 1019 1015 3.3 2.4 Sunny intervals all day
8 0.3 9.7 5.0 74 98 86 -2.1 8.0 3.0 21 3.6 87 0.0 1018 1023 1020 -2.4 4.6 Cloudy am, sunny pm
9 7.4 9.0 8.2 87 96 92 6.3 8.8 7.6 17 6.2 148 0.0 1014 1018 1016 5.7 0.0 Cloudy all day
10 9.3 11.3 10.3 88 98 93 6.9 11.1 9.0 15 4.2 101 5.7 1008 1015 1012 7.5 0.0 Cloudy all day
11 8.1 13.3 10.7 78 98 88 6.5 11.3 8.9 17 3.3 80 1.3 1008 1011 1010 7.0 2.1 Cloudy am, sunny ints pm
12 6.6 11.4 9.0 83 86 85 4.1 5.9 5.0 22 4.5 109 0.0 1009 1013 1011 1.5 3.8 Sunny intervals all day
13 7.9 8.8 8.4 86 96 91 1.4 8.2 4.8 35 8.9 214 17.8 995 1008 1002 -0.6 0.2 Rain int all day, fine evening
14 0.6 9.3 5.0 65 98 82 -0.9 6.0 2.6 23 3.1 74 0.4 998 1002 1000 -2.3 5.4 Sunny am, light showers pm
15 4.1 8.9 6.5 83 96 90 1.2 8.0 4.6 36 8.1 195 11.7 984 997 991 -1.1 0.4 Showers, brief sunny ints
16 1.2 8.6 4.9 83 98 91 -0.2 6.9 3.4 26 6.6 160 2.2 989 994 991 -2.0 0.1 Brief sunny intervals
17 4.1 9.8 7.0 81 96 89 1.0 7.1 4.1 24 3.6 87 1.1 994 1008 1001 -0.2 2.2 Cloudy am, sunny ints pm
18 3.7 8.7 6.2 87 97 92 2.4 7.4 4.9 25 5.3 127 1.1 1007 1011 1009 2.3 0.0 Cloudy all day
19 7.7 12.1 9.9 68 98 83 0.3 8.5 4.4 29 5.8 139 9.0 1004 1012 1008 -0.8 5.8 Bright am, sunny pm
20 2.1 8.8 5.5 77 97 87 -1.9 6.6 2.4 18 3.9 101 0.0 1012 1014 1013 4.4 0.7 Brief sunny ints midday
21 6.2 8.7 7.5 91 98 95 4.7 8.5 6.6 20 5.1 121 4.0 1007 1013 1010 5.8 0.0 Rain intermittent all day
22 6.4 11.1 8.8 64 98 81 5.0 8.9 7.0 12 1.8 44 0.0 1012 1017 1015 5.3 0.4 Brief sunny intervals all day
23 8.3 12.3 10.3 82 98 90 7.5 11.6 9.6 17 4.8 115 3.5 1015 1017 1016 8.1 1.5 Brief sunny intervals all day
24 8.4 14.3 11.4 93 93 93 8.8 8.8 8.8 15 3.8 85 0.0 1017 1025 1021 9.3 5.7 Sunny intervals all day
25 9.5 12.1 10.8 84 96 90 8.0 10.1 9.1 18 5.2 124 0.0 1019 1026 1022 4.9 0.0 Cloudy all day
26 7.6 11.3 9.5 54 97 76 1.1 9.9 5.5 27 9.2 220 6.2 1012 1021 1017 5.8 4.6 Showers am, sunny pm
27 1.3 9.6 5.5 69 91 80 -2.3 5.9 1.8 36 6.3 152 1.8 1020 1025 1023 -1.6 4.5 Sunny am, showers pm
28 0.2 7.3 3.8 65 89 77 -2.6 3.0 0.2 19 4.9 108 0.0 1025 1032 1029 -6.4 1.1 Sunny ints am, cloudy pm
5.3 10.5 7.9 77 93 85 2.9 8.0 5.4 24 5.7 3811 68.6 1011 1017 1014 3.2 53.4  

Graphs for February 2011
Figure 1. Temperature and Rainfall for February 2011.
Figure 2. Sunshine, air pressure and mean wind speed for February 2011.
Figure 3. Wind direction for February 2011.
Figure 4. Soil & sea surface temperature (SST) for Lyme Bay for February 2011.
Figure 5. Wind run, maximum gusts and mean pressure for February 2011.