Evapotranspiration Calculations

St Helens Aerodrome - May 2026 daily calculations

Date Evapotrans-
piration (mm) 0000- 2400		 Rain (mm) 0900- 0900 Pan Evaporation (mm) 0900- 0900 Max Temp Min Temp Max Rel Hum (%) Min Rel Hum (%) Average 10m Wind Speed (m/sec) Solar Radiation (MJ/sq m)
01/05/20262.20.2 24.912.290412.259.46
02/05/20261.30.0 21.612.195722.008.53
03/05/20261.40.0 22.411.397712.876.53
04/05/20261.622.0 19.712.296532.359.89
05/05/20261.71.8 21.210.997482.069.81
06/05/20261.60.2 17.411.193654.097.92
07/05/2026 3.0  7.187444.128.37
08/05/2026   17.7 93423.119.36
09/05/20262.00.2 21.36.792452.779.84
10/05/20261.40.0 17.76.397592.659.73
11/05/20261.40.2 17.76.898582.769.62
12/05/20261.30.2 19.08.697612.178.95
13/05/20261.00.0 16.510.194571.544.35
14/05/20260.80.2 16.710.998801.335.57
15/05/20260.99.0 19.012.498822.216.78
16/05/20260.828.2 18.413.697882.815.59
17/05/20260.81.2 17.612.498841.775.37
Totals:20.266.4       

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