Evapotranspiration Calculations
St Helens Aerodrome - November 2025 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) |
|---|---|---|---|---|---|---|---|---|---|
| 29/10/2025 | 4.1 | 0.2 | 19.2 | 3.7 | 97 | 34 | 2.72 | 25.98 | |
| 30/10/2025 | 3.3 | 0.0 | 16.4 | 4.5 | 93 | 52 | 3.19 | 22.77 | |
| 31/10/2025 | 2.4 | 0.0 | 17.6 | 5.3 | 96 | 58 | 2.48 | 13.21 | |
| 01/11/2025 | 4.0 | 0.0 | 20.2 | 10.8 | 96 | 57 | 2.11 | 26.57 | |
| 02/11/2025 | 3.8 | 0.0 | 20.3 | 13.0 | 91 | 72 | 3.68 | 24.87 | |
| 03/11/2025 | 2.1 | 0.0 | 20.0 | 15.5 | 96 | 72 | 1.86 | 9.76 | |
| 04/11/2025 | 4.4 | 3.6 | 19.3 | 10.9 | 94 | 41 | 3.75 | 25.37 | |
| Totals: | 24.1 | 3.8 |
