May 2016
A carpet of bluebells in Gittisham Woods on a warm May evening.

Warmer, sunnier and drier than the long term average.
Summary for  May 2016
Mean Max: 18.6ºC (+2.0ºC)
Mean Min: 8.0ºC (-0.2ºC)
Mean (min+max ÷ 2): 13.3ºC (+0.9ºC)
Mean (integrated):  12.9ºC  
High Max: 23.2ºC 30th
Low Max: 13.3ºC 1st
High Min: 15.8ºC 9th
Low Min: 0.1ºC 1st
Mean Grass Min: 6.7ºC  
Grass Min: -1.8ºC 1st
Days >15°C 27 Days  
Days >10°C 31 Days  
Nights <10°C 19 Days  
Nights <5°C 8 Days  
Rain Total (gauge): 37.3 mm (67%)
Rain Total (tipping bucket): 33.7 mm (60%)
Rain Days >0.2 mm: 13 Days  
Rain Days >1.0 mm: 8 Days  
Max 24 hrs: 7.5 mm 12th
Days without any rain: 18  
Air Frost: 0 Days  
Grass Frost: 2 Days  
Snow Falling: 0 Days  
Snow (50%) @ 9am: 0 Days  
Ice Days: 0 Days  
Thunder Heard: 2 Days  
Hail <5 mm: 0 Days  
Hail >5 mm: 0 Days  
Fog @ 9am: 2 Days  
Total Monthly Sunshine: 236.8 Hours (124%)
Most Sunshine in a Day: 15.2 Hours 29th
Average Daily Sunshine: 7.6 Hours  
Sunless Days: 0 Days  
Cloudless Days: 4 Days  
Total Possible Sunshine: 481.8 Hours  
Percentage of Total Sun: 49%  
Maximum UV Index: 7.0 20th
Time of Max UV:    
Average Max UV: 5.0  
Mean Soil Temp @ 30 cm: 14.8ºC  
Min Soil Temp @ 30 cm: 11.8ºC 1st
Max Soil Temp @ 30 cm: 17.3ºC 29th
Mean Soil Temp @ 100 cm: 14.1ºC  
Min Soil Temp @ 100 cm: 12.4ºC 3rd 
Max Soil Temp @ 100 cm: 15.5ºC 30th
Ave 10 Min Wind >39 mph: 0.00 Days  
N: 6.49 Days 21%
NE: 1.90 Days 6%
E: 3.38 Days 11%
SE: 2.67 Days 9%
S: 5.73 Days 18%
SW: 0.82 Days 3%
W: 0.68 Days 2%
NW: 4.48 Days 14%
Calm: 4.85 Days 16%
Wind Chill Low: -1.1ºC 1st
Mean Wind: 3.8 mph  
Max Gust: 25 mph 8th
Mean Cloud Cover: 52%  
Mean RH @ 9am: 89%  
Rain >0.1mm/hour: 10.7 Hours  
Frost Duration: 0.0 Hours  
Air Frost in a Day: 0.0 Hours 1st
Mean Sea Temperature: 12.4ºC (-0.3ºC)
Normal for Month: 12.7ºC  
Max Sea Temperature: 15.0ºC 28th
Min Sea Temperature: 10.5ºC 1st
Mean Pressure @ 9am: 1014.7 hPa  
Mean Pressure: 1014.3 hPa  
Max Pressure: 1028.3 hPa 1st
Min Pressure: 1001.1 hPa 11th
Max Change in 24 hours: 9.7 hPa 18th
Radiation Daily Mean: 18.68 MJ/m²  
Max Daily Value: 29.46 MJ/m² 29th
Min Daily Value: 5.06 MJ/m² 21st
Number of Days with Data: 31 Days  
1-Hour Maximum: 1238 W/m² 18th
Starting Time of the Hour:   13:00
Max Dewpoint: 18.3ºC 12th
Min Dewpoint: -1.7ºC 1st
Mean Dewpoint: 9.8ºC  
Max Humidity: 99% 12th
Min Humidity: 40% 8th
Mean Humidity: 80%  
Weather Data for Otter Valley, Devon. May 2016
  Temp oC Grass Hum (%) Soil oC DP (oC) Wind (mph) Rain Air (hPa) W/m² UV Sun Frost Calm Wind Sea Observations
  Min Max Min Min Max 30 100 Min Max Max Ave Run mm Min Max Max Max Hours Hours Hours Chill Temp
1 0.1 13.3 -1.8 68 95 11.8 12.5 -1.7 11.1 24 5.1 123 0.0 1025 1028 876 3.8 1.8 0.0 5.9 -1.1 10.5 Sunny ints am, cloudy pm
2 10.9 14.3 5.9 65 96 11.9 12.5 5.5 12.0 21 6.8 162 0.9 1019 1026 721 3.0 3.8 0.0 0.0 8.6 10.6 Sunny intervals all day
3 1.5 17.7 0.0 45 97 12.0 12.4 0.6 10.0 16 2.3 55 0.0 1022 1028 1038 5.9 12.7 0.0 0.0 1.2 10.8 Sunny intervals all day
4 0.4 14.8 -0.5 70 96 12.3 12.5 -0.6 10.1 17 3.5 84 0.0 1023 1028 898 5.7 13.6 0.0 6.5 -0.2 11.0 Sunny all day
5 1.9 17.3 0.4 54 96 12.6 12.5 0.8 10.4 17 3.3 80 0.0 1015 1023 947 5.9 14.2 0.0 0.1 0.4 11.3 Sunny all day
6 4.3 20.3 4.5 55 93 12.8 12.5 2.8 11.8 12 2.7 64 0.0 1007 1015 866 5.8 7.8 0.0 1.3 3.9 11.6 Sunny intervals all day
7 12.4 20.3 9.6 62 88 13.5 12.8 8.2 13.6 19 4.6 110 0.4 1004 1007 989 5.9 4.0 0.0 2.0 11.6 11.5 Cloudy am, sunny ints pm
8 13.3 21.7 12.7 40 91 13.9 12.9 6.9 14.5 25 7.3 176 1.3 1003 1005 966 6.1 12.1 0.0 0.3 12.2 11.9 Sunny intervals all day
9 15.8 19.8 10.9 52 94 14.5 13.2 9.5 13.7 22 6.2 148 4.2 1003 1007 487 3.5 0.7 0.0 1.8 12.9 12.1 Sunny intervals am, rain pm
10 10.3 21.8 9.7 70 98 14.6 13.5 9.6 17.9 12 1.5 35 0.7 1004 1008 972 6.5 2.0 0.0 12.7 10.1 12.3 Sunny intervals all day
11 12.6 17.9 10.7 90 97 15.2 13.7 11.4 16.7 10 1.8 44 3.1 1001 1005 695 3.1 0.8 0.0 8.6 11.8 12.4 Showers am, sunny ints pm
12 12.4 22.9 14.2 73 99 15.4 13.9 11.9 18.3 17 2.2 53 7.5 1002 1004 856 5.0 3.7 0.0 7.0 12.2 12.3 Rain am, sunny intervals pm
13 11.9 21.9 11.1 65 97 15.8 14.1 10.4 16.3 18 3.5 83 0.7 1004 1013 1099 5.3 10.5 0.0 2.8 9.3 12.2 Cloudy am, sunny pm
14 7.4 16.0 3.1 65 90 16.0 14.3 5.4 11.8 13 3.2 77 0.0 1013 1022 1122 6.2 9.3 0.0 2.8 7.2 12.4 Sunny intervals all day
15 3.6 20.2 3.0 43 97 15.6 14.4 2.6 11.9 14 2.4 57 0.0 1022 1024 1196 6.3 12.5 0.0 7.8 3.2 12.5 Sunny intervals all day
16 4.6 18.7 3.1 57 96 15.5 14.6 3.3 12.2 15 2.3 55 0.0 1021 1024 1117 6.5 9.3 0.0 7.8 3.9 12.7 Sunny intervals all day
17 5.8 16.2 8.2 76 97 15.4 14.7 4.8 13.2 17 3.8 92 0.0 1013 1022 526 3.3 0.6 0.0 7.9 5.5 12.6 Brief sunny intervals all day
18 10.9 17.5 6.8 64 96 15.4 14.7 8.2 12.3 25 6.9 166 3.5 1003 1013 1238 6.2 6.8 0.0 0.1 7.1 12.6 Sunny intervals all day
19 6.6 16.6 4.9 71 97 15.3 14.8 5.8 13.2 20 3.5 85 0.0 1008 1014 668 4.6 3.6 0.0 7.3 6.4 12.5 Sunny intervals all day
20 9.6 18.1 9.3 76 97 15.3 14.8 9.0 14.3 20 4.3 103 0.7 1013 1017 965 7.0 2.1 0.0 6.1 9.4 12.6 Brief sunny intervals all day
21 12.1 13.4 7.3 96 98 15.5 14.8 10.9 13.1 22 9.5 227 7.3 1006 1013 225 2.3 1.1 0.0 0.5 9.0 12.9 Rain all day, sunny evening
22 6.1 18.2 6.6 64 99 15.3 14.9 5.6 14.2 18 2.3 56 2.0 1006 1013 1008 5.8 8.2 0.0 10.5 5.7 13.2 Showers am, sunny ints pm
23 6.7 18.3 5.5 63 97 15.3 14.9 5.8 11.9 15 2.8 68 0.0 1014 1022 1141 5.4 9.5 0.0 5.8 6.4 13.0 Sunny intervals all day
24 5.8 17.2 10.1 65 95 15.3 14.9 4.6 12.6 16 3.1 74 0.0 1019 1022 926 5.8 11.6 0.0 3.8 5.4 13.0 Sunny intervals all day
25 6.1 15.6 3.0 60 95 15.6 14.9 5.0 9.0 17 3.1 75 0.0 1016 1019 1141 0.0 7.6 0.0 4.6 5.8 12.9 Sunny intervals all day
26 4.2 19.4 2.9 63 97 15.4 14.9 3.1 13.0 14 2.2 54 0.0 1014 1017 1015 6.1 11.7 0.0 3.8 2.9 13.4 Sunny intervals all day
27 11.4 18.4 11.6 76 96 16.1 15.1 10.3 14.5 15 2.3 55 1.5 1015 1017 980 5.8 8.0 0.0 10.2 11.1 13.5 Cloudy am, sunny pm
28 9.8 21.1 12.9 71 98 16.5 15.1 9.1 16.1 14 2.5 61 0.0 1012 1016 949 0.0 9.2 0.0 7.4 9.4 15.0 Sunny intervals all day
29 11.6 23.0 8.7 55 95 17.0 15.2 10.4 14.4 20 3.4 85 0.0 1012 1015 927 6.1 15.2 0.0 5.4 11.3 13.8 Sunny all day
30 7.3 23.2 6.6 55 96 17.3 15.4 6.4 14.6 19 3.2 76 0.0 1015 1019 922 6.1 15.2 0.0 8.2 6.9 13.4 Sunny all day
31 9.3 22.3 7.7 53 96 17.3 15.5 7.9 12.9 23 5.0 114 0.0 1018 1020 910 6.2 7.5 0.0 6.2 8.8 13.3 Sunny intervals all day
8.0 18.6 6.7 64 96 14.9 14.1 6.2 13.3 18 3.8 2798 33.7 1012 1017 916 5.0 236.8 0.0 149 7.0 12.4  
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