September 2013
A hover fly feeding on the flowers of dwarf marjoram. Taken on a warm and sunny September day in my garden.
An average month for temperature and rainfall but with less sunshine than normal.
Summary for September 2013 Mean Max: 19.6ºC (+0.5ºC) Mean Min: 10.8ºC (-0.1ºC) Mean: 15.2ºC (+0.2ºC)       High Max: 26.1ºC 3rd  Low Max: 15.6ºC 16th High Min: 16.7ºC 13th Low Min: 5.4ºC 7th Mean Grass Min: 8.4ºC   Grass Min: 2.8ºC 15th       Rain Total (gauge): 56.4 mm (94%) Rain Total (tipping bucket): 54.3 mm (91%) Rain Days >0.2 mm: 16 Days   Rain Days >1.0 mm: 12 Days   Max 24 hrs: 13.6 mm 28th Days without any rain: 14         Air Frost: 0 Days   Grass Frost: 0 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: 1 Day         Total Monthly Sunshine: 121.8 Hours (85%) Most Sunshine in a Day: 10.3 Hours 1st Average Daily Sunshine: 4.1 Hours   Sunless Days: 3 Days   Cloudless Days: 1 Day   Total Possible Sunshine: 378.1 Hours   Percentage of Total Sun: 32%   Maximum UV Index: 6.3 2nd  Time of Max UV:   13:00       Mean Soil Temp @ 30 cm: 17.5ºC   Min Soil Temp @ 30 cm: 16.3ºC 20th Max Soil Temp @ 30 cm: 18.7ºC 5th Mean Soil Temp @ 100 cm: 17.6ºC   Min Soil Temp @ 100 cm: 17.0ºC 21st Max Soil Temp @ 100 cm: 18.2ºC 1st       Ave 10 Min Wind >39 mph: 0.00 Days   N: 8.38 Days   NE: 1.89 Days   E: 2.45 Days   SE: 1.09 Days   S: 5.16 Days   SW: 2.26 Days   W: 1.04 Days   NW: 5.36 Days   Calm: 2.38 Days   Wind Chill Low: 5.1ºC 1st Mean Wind: 1.9 mph   Max Gust: 29 mph 16th   30.00 Days   Mean Cloud Cover: 64%   Mean RH @ 9am: 95%   Rain >0.1mm/hour: 33.5 Hours   Frost Duration: 0.0 Hours   Air Frost in a Day: 0.0 Hours         Mean Sea Temperature: 17.3ºC (+0.4ºC) Normal for Month: 16.9ºC   Max Sea Temperature: 18.7ºC 3rd  Min Sea Temperature: 16.3ºC 21st       Mean Pressure @ 9am: 1016.5 hPa (+1.9 hPa) Mean Pressure: 1016.1 hPa (+1.5 hPa) Max Pressure: 1033.2 hPa 1st Min Pressure: 997.9 hPa 17th Max Change in 24 hours: 16.0 hPa 15th       Radiation Daily Mean: 9.47 MJ/m²   Max Daily Value: 18.65 MJ/m² 5th Min Daily Value: 2.74 MJ/m² 26th Number of Days with Data: 30 Days   1-Hour Maximum: 910 W/m² 2nd  Starting Time of the Hour:   13:30       Max Dewpoint: 18.0ºC 21st Min Dewpoint: 4.4ºC 1st Mean Dewpoint: 12.3ºC         Max Humidity: 99% 7th Min Humidity: 43% 5th Mean Humidity: 84%
Weather Data for Otter Valley, Devon. September 2013   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 5.6 22.7 3.4 51 96 18.5 18.2 4.4 12.8 13 1.9 45 0.0 1030 1033 725 5.0 10.3 0.0 6.0 5.1 17.7 Sunny all day 2 10.9 23.3 8.0 61 97 18.3 18.2 9.7 15.5 15 2.4 57 0.0 1029 1031 910 6.3 8.7 0.0 10.0 10.4 18.2 Sunny intervals all day 3 9.8 26.1 6.7 59 98 18.4 18.2 9.0 17.9 12 1.9 47 0.0 1025 1029 792 5.4 7.3 0.0 5.3 9.6 18.7 Cloudy am, sunny pm 4 10.5 22.7 10.5 71 98 18.6 18.2 9.7 17.3 9 1.3 32 0.0 1016 1025 755 5.6 6.1 0.0 6.8 10.4 18.2 Sea fog am, sunny pm 5 10.7 25.7 5.8 43 98 18.7 18.2 10.0 16.1 12 2.1 50 0.0 1010 1016 854 5.4 9.8 0.0 5.0 10.4 18.6 Sunny intervals all day 6 12.9 19.6 6.3 45 92 18.5 18.2 6.5 13.8 12 2.0 48 1.2 1008 1011 745 4.5 3.4 0.0 3.0 11.2 18.3 Sunny ints am, thunder pm 7 5.4 17.5 4.0 68 99 18.3 18.2 4.7 12.4 13 0.9 21 5.8 1010 1017 873 4.2 3.5 0.0 12.5 5.1 18.0 Sunny intervals all day 8 6.4 16.9 5.1 67 99 18.0 18.1 5.6 12.4 15 1.1 26 4.1 1017 1018 561 4.2 4.5 0.0 13.8 6.1 17.8 Sunny intervals all day 9 11.6 21.4 7.9 55 98 17.8 18.1 9.8 15.5 18 2.9 71 2.1 1014 1020 821 5.3 8.1 0.0 4.5 10.9 17.9 Sunny intervals all day 10 6.5 20.3 5.0 52 99 17.7 18.1 5.6 12.3 20 2.8 68 0.0 1020 1024 816 4.7 6.4 0.0 9.0 6.2 17.6 Sunny intervals all day 11 7.1 16.4 5.7 74 98 17.6 18.0 5.8 13.1 13 1.8 42 0.9 1021 1025 343 2.9 0.7 0.0 7.8 6.4 17.4 Brief sunny intervals all day 12 13.9 20.5 11.3 83 98 17.5 18.0 12.9 17.9 9 0.9 22 2.1 1019 1022 348 3.9 2.3 0.0 14.0 13.7 17.4 Sunny intervals am, rain pm 13 16.7 19.4 14.8 85 96 17.4 17.9 15.3 17.2 14 1.8 43 5.3 1014 1020 338 3.2 1.7 0.0 7.5 16.1 17.4 Sunny intervals, rain evening 14 8.4 17.2 5.1 62 99 17.3 17.8 7.7 14.9 14 2.3 54 0.0 1015 1019 638 4.2 7.4 0.0 8.8 8.2 17.3 Sunny intervals all day 15 6.1 16.7 2.8 83 99 17.2 17.6 5.1 15.7 24 3.2 77 1.4 1004 1020 270 2.6 1.1 0.0 10.0 5.7 17.2 Brief sunny ints am, rain pm 16 9.3 15.6 6.6 58 92 17.1 17.5 6.9 12.0 29 3.4 81 1.8 1005 1007 742 3.7 6.9 0.0 1.8 9.0 16.9 Sunny ints & light showers 17 10.2 17.3 8.7 78 96 16.8 17.4 7.0 16.2 19 3.4 81 6.7 998 1007 278 2.5 0.3 0.0 1.0 9.3 16.6 Cloudy am, showers pm 18 13.6 18.7 9.6 50 93 16.5 17.3 7.8 13.8 20 4.4 105 0.0 999 1012 851 4.7 6.6 0.0 0.3 11.5 16.5 Sunny intervals all day 19 6.3 19.4 4.7 70 98 16.4 17.2 5.5 17.0 21 3.0 72 0.0 1008 1014 622 4.2 3.9 0.0 10.0 6.2 16.4 Sunny intervals all day 20 7.3 18.6 4.3 64 99 16.3 17.1 6.4 12.2 12 1.0 27 0.0 1013 1022 578 4.0 4.7 0.0 12.8 6.9 16.4 Sunny intervals all day 21 8.7 19.9 5.3 87 98 16.3 17.0 7.8 18.0 11 1.6 39 0.0 1022 1027 385 4.1 0.3 0.0 11.0 8.7 16.3 Brief sunny intervals all day 22 16.4 21.3 10.6 78 98 16.7 17.0 15.6 17.8 10 0.7 16 0.0 1027 1029 443 4.5 1.1 0.0 16.3 16.2 17.3 Brief sunny intervals all day 23 15.6 18.4 9.0 84 98 17.2 17.1 12.8 16.4 12 1.7 40 0.0 1019 1027 262 2.5 2.2 0.0 1.0 13.7 16.6 Cloudy am, sunny ints pm 24 13.1 22.2 11.7 71 98 17.5 17.2 12.2 17.8 9 1.4 30 0.2 1013 1019 710 4.1 4.8 0.0 5.0 12.8 17.6 Sunny intervals all day 25 10.4 18.7 13.8 87 99 17.4 17.2 9.8 16.6 10 1.0 25 1.8 1010 1014 479 3.3 3.7 0.0 11.0 10.2 17.0 Sunny intervals all day 26 15.1 16.6 14.3 93 99 17.4 17.2 13.9 16.2 13 0.8 18 6.4 1012 1016 155 1.5 0.0 0.0 12.8 14.7 16.8 Cloudy all day 27 14.4 19.4 13.0 76 94 17.5 17.3 12.4 15.4 14 1.3 32 0.0 1011 1016 484 3.4 4.4 0.0 2.8 14.3 16.6 Sunny intervals all day 28 14.1 18.3 12.9 80 97 17.4 17.2 11.2 16.8 13 1.1 28 13.6 1004 1011 286 2.1 0.0 0.0 3.5 13.8 16.5 Cloudy all day 29 14.2 18.7 12.8 78 93 17.5 17.2 11.9 15.0 13 1.0 24 0.7 1004 1005 603 3.0 1.7 0.0 4.5 14.0 16.5 Sunny intervals all day 30 14.1 17.9 12.7 89 96 17.3 17.3 12.8 16.4 11 0.6 14 0.2 1003 1006 211 2.1 0.0 0.0 13.8 13.9 16.5 Cloudy all day 10.8 19.6 8.4 70 97 18 17.6 9.2 15.4 14 1.9 1333 54.3 1013 1019 563 3.9 121.8 0.0 231 10.4 17.3
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