July 2019
An Azure dragonfly basking under the hot July sunshine in my garden

Warm, sunny and drier than normal. Mostly settled and calm with a plethora of sunny afternoons and gentle sea breezes making for a month of remarkably consistent maximum temperatures. With all those clear skies the nights were often starry, calm and cool. Warmest and sunniest July since last year (19.4°C & 297 hours), driest July since 2016 (5.9 mm).
Summary for July 2019
Mean Max: 24.0ºC (+3.1ºC)
Mean Min: 12.5ºC (-0.6ºC)
Mean: 18.3ºC (+1.3ºC)
High Max: 27.7ºC 6th
Low Max: 19.4ºC 19th
High Min: 17.2ºC 22nd 
Low Min: 7.3ºC 4th
Mean Grass Min: 10.1ºC  
Grass Min: 6.1ºC 2nd 
Days  >25°C 8 Days  
Days >20°C 30 Days  
Nights  >15°C 10 Days  
Nights  >10°C 24 Days  
Rain Total (gauge): 27.2 mm (55%)
Rain Total (tipping bucket): 26.4 mm (54%)
Rain Days >0.2 mm: 5 Days  
Rain Days >1.0 mm: 5 Days  
Max 24 hrs: 12.4 mm 30th
Days without any rain: 26  
Air Frost: 0 Days  
Grass Frost: 0 Days  
Snow Falling: 0 Days  
Snow (50%) @ 9am: 0 Days  
Ice Days: 0 Days  
Thunder Heard: 3 Days  
Hail <5 mm: 0 Days  
Hail >5 mm: 0 Days  
Fog @ 9am: 0 Days  
Total Monthly Sunshine: 286.8 Hours (130%)
Most Sunshine in a Day: 15.4 Hours 4th
Average Daily Sunshine: 9.3 Hours  
Sunless Days: 1 Day  
Cloudless Days: 3 Days  
Total Possible Sunshine: 495.2 Hours  
Percentage of Total Sun: 58%  
Average Sunny Interval: 22.5 mins
Maximum UV Index: 9.1 1st
Mean Soil Temp @ 10 cm: 19.4ºC  
Min Soil Temp @ 10 cm: 18.6ºC 4th
Max Soil Temp @ 10 cm: 20.6ºC 26th
Mean Soil Temp @ 30 cm: 18.8ºC  
Min Soil Temp @ 30 cm: 18.1ºC 4th
Max Soil Temp @ 30 cm: 19.8ºC 26th
Mean Soil Temp @ 100 cm: 16.6ºC  
Min Soil Temp @ 100 cm: 15.6ºC 1st
Max Soil Temp @ 100 cm: 17.2ºC 25th
Ave 10 Min Wind >39 mph: 0.00 Days  
N: 4.56 Days 15%
NE: 0.80 Days 3%
E: 0.95 Days 3%
SE: 1.23 Days 4%
S: 6.03 Days 19%
SW: 3.08 Days 10%
W: 2.12 Days 7%
NW: 5.77 Days 19%
Calm: 6.46 Days 21%
Wind Chill Low: 6.5ºC 4th
Mean Wind: 2.9 mph  
Max Gust: 27 mph 30th
Mean Cloud Cover: 40%  
Mean RH @ 9am: 85%  
Rain >0.1mm/hour: 9.2 Hours  
Frost Duration: 0.0 Hours  
Air Frost in a Day: 0.0 Hours 1st
Mean Sea Temperature: 17.8ºC (+0.4ºC)
Normal for Month: 17.4ºC  
Max Sea Temperature: 19.6ºC 26th
Min Sea Temperature: 15.8ºC 2nd 
Mean Pressure @ 9am: 1015.7 hPa  
Mean Pressure: 1015.5 hPa  
Max Pressure: 1026.2 hPa 4th
Min Pressure: 996.1 hPa 30th
Max Change in 24 hours: 17.8 hPa 30th
Radiation Daily Mean: 19.70 MJ/m²  
Max Daily Value: 27.67 MJ/m² 4th
Min Daily Value: 3.80 MJ/m² 19th
Number of Days with Data: 31 Days  
1-Hour Maximum: 966 W/m² 1st
Starting Time of the Hour:   13:00
Max Dewpoint: 21.0ºC 25th
Min Dewpoint: 6.1ºC 4th
Mean Dewpoint: 13.8ºC  
Max Humidity: 96% 14th
Min Humidity: 41% 28th
Mean Humidity: 76%  
 
Weather Data for Otter Valley, Devon. July 2019
  Temp oC Grass Hum (%) Soil oC (cm) Soil DP (oC) Wind (mph) Rain Air (hPa) W/m² UV Sun Frost Sea Observations
  Min Max Min Min Max 10 30 100 (cb) Min Max Max Ave Run mm Min Max Max Max Hours Hours Temp
1 11.6 22.4 8.9 53 94 19.3 18.8 15.6 12.9 10.0 13.3 21 4.0 95 0.0 1018 1023 1125 9.1 13.4 0.0 17.0 Sunny intervals all day
2 7.9 23.6 6.1 45 95 18.7 18.5 16.0 15.5 6.8 12.3 17 3.1 73 0.0 1023 1025 1078 7.5 11.2 0.0 16.7 Sunny intervals all day
3 11.8 22.8 7.8 52 84 18.7 18.2 16.1 17.6 8.3 14.6 15 2.3 55 0.0 1024 1026 1060 7.1 12.9 0.0 17.0 Sunny intervals all day
4 7.3 24.6 6.1 49 95 18.6 18.1 16.1 19.5 6.1 14.9 17 3.0 71 0.0 1021 1026 838 7.0 15.4 0.0 17.2 Sunny all day
5 9.0 26.1 7.8 53 95 18.8 18.2 16.1 22.0 7.8 17.4 15 2.3 55 0.0 1016 1022 1016 7.7 10.1 0.0 17.6 Sunny intervals all day
6 12.3 27.7 10.6 49 92 19.4 18.4 16.1 24.2 10.6 17.7 14 3.0 71 0.0 1012 1016 1014 8.0 12.0 0.0 17.4 Sunny intervals all day
7 14.5 24.5 12.2 50 91 19.7 18.8 16.1 26.7 12.5 17.5 14 1.8 42 0.0 1013 1017 997 7.7 4.2 0.0 17.3 Sunny intervals all day
8 15.1 23.3 13.3 58 93 19.7 18.8 16.1 28.3 10.5 17.2 14 1.1 26 0.0 1017 1020 974 7.0 13.7 0.0 17.8 Sunny intervals all day
9 9.3 25.6 8.3 51 94 19.5 18.9 16.1 30.2 7.9 15.9 16 1.5 35 0.0 1019 1021 1051 8.0 8.9 0.0 18.2 Sunny intervals all day
10 11.4 24.9 9.4 54 95 19.5 18.8 16.2 32.2 10.1 18.1 22 2.3 56 0.0 1015 1020 872 6.7 12.0 0.0 18.4 Sunny intervals all day
11 13.0 24.4 10.6 67 94 19.6 19.1 16.7 34.5 11.4 18.4 15 1.3 32 0.0 1012 1015 991 6.4 5.5 0.0 18.6 Sunny intervals all day
12 16.5 24.9 13.9 53 92 19.8 18.9 16.7 36.5 12.9 16.1 18 3.9 93 0.0 1013 1019 998 7.6 13.0 0.0 17.9 Sunny intervals all day
13 11.3 21.7 9.4 58 95 19.2 19.1 16.7 39.2 10.0 15.4 15 3.3 78 0.0 1019 1023 465 4.1 3.6 0.0 16.9 Sunny intervals all day
14 11.1 24.2 8.3 65 96 19.2 18.7 16.7 41.4 9.8 18.1 16 2.4 57 0.0 1021 1022 1026 6.8 7.3 0.0 17.5 Sunny intervals all day
15 9.7 23.0 7.8 62 96 19.4 18.8 16.7 43.7 8.5 17.0 16 2.5 59 0.0 1020 1022 918 7.2 13.5 0.0 17.9 Sunny intervals all day
16 8.4 23.3 6.7 59 96 19.2 18.8 16.7 46.3 7.3 15.8 16 1.9 46 0.0 1017 1021 814 6.3 15.1 0.0 18.4 Sunny all day
17 9.6 24.1 7.8 61 96 19.2 18.8 16.7 48.5 8.6 17.4 15 1.9 46 0.0 1012 1018 955 6.5 9.5 0.0 18.3 Sunny intervals all day
18 16.1 23.5 12.8 52 94 19.4 18.9 16.7 50.5 11.6 16.5 14 3.2 77 3.0 1009 1012 725 6.7 7.0 0.0 17.9 Sunny intervals all day
19 11.9 19.4 8.9 70 96 18.7 18.6 16.7 52.2 9.9 18.5 22 3.5 85 4.2 1007 1013 180 1.9 0.0 0.0 17.4 Patchy, light rain all day
20 15.3 25.2 12.8 50 96 19.1 18.4 16.7 52.4 11.0 16.7 21 3.5 84 0.0 1004 1015 990 6.7 8.1 0.0 17.5 Sunny intervals all day
21 11.1 23.4 8.3 66 95 19.2 18.6 16.7 54.4 9.6 18.4 26 4.6 111 0.0 1015 1021 986 6.7 9.6 0.0 17.6 Sunny intervals all day
22 17.2 22.4 15.0 84 93 19.7 18.9 16.7 54.6 15.3 19.8 16 4.6 112 0.0 1020 1022 385 3.7 1.5 0.0 17.6 Sunny intervals all day
23 15.3 25.8 12.2 56 96 19.8 19.0 16.7 55.3 13.9 18.9 18 1.5 36 0.0 1011 1021 873 6.3 7.6 0.0 18.3 Sunny ints, thunder evening
24 15.3 24.5 11.7 73 95 20.2 19.3 16.8 55.7 14.0 19.8 22 2.9 70 3.6 1008 1013 888 7.7 11.5 0.0 18.4 Sunny intervals all day
25 14.6 27.0 12.2 65 96 20.4 19.5 17.2 56.1 13.5 21.0 21 3.3 78 0.0 1008 1012 779 6.3 14.5 0.0 18.9 Sunny intervals all day
26 15.8 24.5 12.2 65 96 20.6 19.8 17.2 56.7 14.3 18.6 21 2.4 57 0.0 1009 1011 882 7.1 2.6 0.0 19.0 Sunny intervals all day
27 11.6 26.0 8.9 46 96 19.7 19.5 17.2 58.5 10.3 15.0 20 3.7 89 0.0 1007 1010 982 6.4 13.6 0.0 18.2 Sunny intervals all day
28 11.9 25.6 8.3 41 95 19.2 19.1 17.2 60.3 10.4 14.2 17 4.2 100 0.0 1007 1009 946 6.2 13.6 0.0 17.7 Sunny intervals all day
29 10.6 22.6 7.2 55 93 19.0 18.9 17.2 62.2 8.9 17.6 19 2.0 49 0.0 1003 1008 1049 7.8 7.8 0.0 17.9 Sunshine & showers
30 16.5 21.4 15.0 74 94 19.2 18.9 17.2 62.2 13.4 17.8 27 4.1 150 12.4 996 1014 1028 5.9 2.8 0.0 18.0 Sunny intervals all day
31 15.4 22.1 13.3 66 88 18.9 18.9 17.2 60.0 13.0 18.1 16 3.5 37 3.2 1014 1015 856 5.9 5.4 0.0 18.3 Sunny intervals all day
12.5 24.0 10.1 58 94 19.4 18.8 16.6 42.3 10.6 17.0 18 2.9 2126 23.2 1013 1018 895 6.6 286.8 0.0 17.8  
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