Evapotranspiration Calculations
Richmond Airport - October 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) |
|---|---|---|---|---|---|---|---|---|---|
| 01/10/2025 | 9.1 | 0.0 | 38.0 | 20.7 | 38 | 12 | 4.18 | 25.40 | |
| 02/10/2025 | 9.7 | 0.0 | 37.9 | 17.4 | 39 | 11 | 4.74 | 25.53 | |
| 03/10/2025 | 10.0 | 0.0 | 35.3 | 14.5 | 28 | 7 | 5.32 | 25.49 | |
| 04/10/2025 | 10.6 | 0.0 | 37.2 | 13.3 | 31 | 8 | 5.53 | 25.61 | |
| 05/10/2025 | 10.2 | 0.0 | 36.9 | 16.2 | 47 | 11 | 5.54 | 25.85 | |
| 06/10/2025 | 8.2 | 0.0 | 34.5 | 19.1 | 59 | 22 | 4.47 | 25.99 | |
| 07/10/2025 | 7.8 | 0.0 | 36.9 | 16.2 | 68 | 14 | 3.28 | 25.81 | |
| 08/10/2025 | 8.1 | 0.0 | 39.4 | 17.7 | 62 | 19 | 3.26 | 26.07 | |
| 09/10/2025 | 9.1 | 0.0 | 40.8 | 23.7 | 55 | 24 | 4.09 | 25.84 | |
| 10/10/2025 | 9.4 | 0.0 | 41.2 | 23.8 | 65 | 23 | 4.57 | 25.19 | |
| 11/10/2025 | 9.3 | 0.0 | 40.8 | 26.5 | 60 | 18 | 4.07 | 26.31 | |
| 12/10/2025 | 8.8 | 0.0 | 38.7 | 22.5 | 55 | 22 | 4.39 | 24.00 | |
| 13/10/2025 | 9.0 | 0.0 | 39.0 | 26.0 | 52 | 23 | 4.66 | 22.76 | |
| 14/10/2025 | 8.5 | 0.0 | 38.6 | 23.9 | 92 | 26 | 5.15 | 23.93 | |
| Totals: | 127.8 | 0.0 |
