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Valentia 1981–2010 averages
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TEMPERATURE (degrees Celsius) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
mean daily max | 9.8 | 9.8 | 11.0 | 12.5 | 14.9 | 16.7 | 18.1 | 18.2 | 17.0 | 14.3 | 11.8 | 10.3 | 13.7 |
mean daily min | 4.7 | 4.6 | 5.4 | 6.3 | 8.4 | 10.8 | 12.7 | 12.6 | 11.2 | 9.0 | 6.8 | 5.3 | 8.2 |
mean temperature | 7.3 | 7.2 | 8.2 | 9.4 | 11.6 | 13.7 | 15.4 | 15.4 | 14.1 | 11.7 | 9.3 | 7.8 | 10.9 |
absolute max. | 14.8 | 15.6 | 20.7 | 24.0 | 27.2 | 28.1 | 27.7 | 28.3 | 28.4 | 22.0 | 19.8 | 15.5 | 28.4 |
min. maximum | -1.5 | 1.8 | 3.4 | 6.3 | 7.8 | 11.8 | 13.9 | 13.8 | 12.6 | 7.2 | 2.4 | 0.0 | -1.5 |
max. minimum | 11.8 | 11.7 | 13.1 | 13.8 | 15.6 | 19.1 | 19.0 | 19.5 | 17.9 | 17.3 | 14.4 | 13.0 | 19.5 |
absolute min. | -6.8 | -5.2 | -4.0 | -2.3 | 0.6 | 3.6 | 6.5 | 3.3 | 2.4 | -1.4 | -4.0 | -7.7 | -7.7 |
mean num. of days with air frost | 2.6 | 3.0 | 1.3 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.8 | 2.8 | 11.0 |
mean num. of days with ground frost | 7.4 | 7.4 | 5.7 | 4.5 | 1.2 | 0.1 | 0.0 | 0.0 | 0.3 | 1.8 | 4.4 | 7.2 | 39.9 |
mean 5cm soil | 5.8 | 5.7 | 7.0 | 9.3 | 12.8 | 15.6 | 16.8 | 16.2 | 13.8 | 10.6 | 7.9 | 6.4 | 10.6 |
mean 10cm soil | 6.1 | 6.0 | 7.2 | 9.0 | 12.2 | 15.0 | 16.4 | 15.9 | 13.9 | 10.9 | 8.4 | 6.7 | 10.6 |
mean 20cm soil | 6.7 | 6.7 | 7.8 | 9.6 | 12.6 | 15.2 | 16.6 | 16.4 | 14.7 | 11.8 | 9.2 | 7.4 | 11.2 |
RELATIVE HUMIDITY (%) | | | | | | | | | | | | | |
mean at 0900UTC | 83.8 | 83.3 | 82.7 | 78.9 | 77.6 | 81.0 | 84.1 | 84.3 | 84.1 | 84.7 | 84.8 | 84.0 | 82.8 |
mean at 1500UTC | 79.2 | 76.2 | 75.0 | 72.4 | 72.9 | 76.7 | 80.0 | 78.5 | 77.2 | 78.4 | 79.6 | 79.9 | 77.2 |
SUNSHINE (hours) | | | | | | | | | | | | | |
mean daily duration | 1.4 | 2.2 | 3.0 | 5.2 | 5.9 | 5.3 | 4.5 | 4.4 | 3.9 | 2.7 | 1.8 | 1.3 | 3.5 |
greatest daily duration | 7.6 | 9.0 | 10.9 | 13.4 | 15.3 | 15.9 | 15.1 | 13.9 | 11.8 | 9.5 | 8.1 | 6.5 | 15.9 |
mean no. of days with no sun | 10.9 | 7.4 | 6.9 | 3.3 | 2.8 | 3.4 | 4.0 | 3.2 | 3.8 | 6.4 | 8.5 | 11.2 | 71.8 |
RAINFALL (mm) | | | | | | | | | | | | | |
mean monthly total | 173.8 | 123.7 | 123.8 | 96.7 | 93.5 | 95.3 | 99.0 | 114.9 | 125.4 | 177.1 | 169.3 | 164.9 | 1557.4 |
greatest daily total | 48.5 | 51.6 | 48.6 | 55.1 | 38.2 | 51.8 | 45.5 | 88.8 | 94.3 | 51.7 | 80.9 | 69.9 | 94.3 |
mean num. of days with >= 0.2mm | 22 | 19 | 21 | 17 | 17 | 17 | 19 | 19 | 19 | 22 | 22 | 22 | 236 |
mean num. of days with >= 1.0mm | 19 | 15 | 17 | 13 | 13 | 12 | 14 | 14 | 15 | 18 | 19 | 18 | 187 |
mean num. of days with >= 5.0mm | 11 | 8 | 8 | 6 | 6 | 5 | 6 | 7 | 7 | 11 | 10 | 10 | 95 |
WIND (knots) | | | | | | | | | | | | | |
mean monthly speed | 12.2 | 11.6 | 10.9 | 9.4 | 9.0 | 8.4 | 8.0 | 8.0 | 8.6 | 10.1 | 10.6 | 11.3 | 9.8 |
max. gust | 82 | 79 | 73 | 65 | 63 | 58 | 53 | 60 | 67 | 75 | 70 | 88 | 88 |
max. mean 10-minute speed | 49 | 49 | 47 | 38 | 39 | 32 | 31 | 36 | 40 | 47 | 49 | 60 | 60 |
mean num. of days with gales | 2.4 | 1.5 | 0.9 | 0.2 | 0.3 | 0.0 | 0.0 | 0.1 | 0.1 | 0.8 | 1.0 | 1.5 | 8.8 |
WEATHER (mean no. of days with..) | | | | | | | | | | | | | |
snow or sleet | 1.0 | 0.8 | 0.7 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.7 | 3.7 |
snow lying at 0900UTC | 0.2 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.5 |
hail | 4.9 | 3.5 | 3.8 | 2.7 | 0.7 | 0.0 | 0.0 | 0.1 | 0.1 | 0.9 | 2.3 | 3.7 | 22.8 |
thunder | 1.3 | 0.6 | 0.5 | 0.2 | 0.3 | 0.2 | 0.5 | 0.5 | 0.3 | 0.7 | 0.9 | 0.5 | 6.6 |
fog | 0.5 | 0.3 | 0.4 | 0.9 | 1.2 | 1.7 | 1.7 | 1.3 | 0.8 | 0.6 | 0.5 | 0.4 | 10.2 |