Evapotranspiration Calculations
Double Island Point Lighthouse - September 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) |
|---|---|---|---|---|---|---|---|---|---|
| 01/09/2025 | 3.7 | 0.0 | 21.9 | 15.6 | 95 | 53 | 9.11 | 11.81 | |
| 02/09/2025 | 2.9 | 2.8 | 20.1 | 15.2 | 94 | 71 | 8.72 | 16.63 | |
| 03/09/2025 | 3.7 | 0.0 | 23.2 | 16.9 | 90 | 70 | 7.66 | 20.68 | |
| 04/09/2025 | 3.7 | 0.0 | 22.3 | 18.5 | 87 | 65 | 5.57 | 19.55 | |
| 05/09/2025 | 3.8 | 0.0 | 23.0 | 19.4 | 91 | 60 | 6.27 | 17.69 | |
| 06/09/2025 | 5.3 | 0.0 | 22.0 | 18.7 | 75 | 54 | 13.37 | 16.87 | |
| 07/09/2025 | 4.0 | 0.0 | 21.8 | 16.7 | 91 | 54 | 8.82 | 15.71 | |
| 08/09/2025 | 1.0 | 17.2 | 78 | 48 | 5.58 | 20.27 | |||
| 09/09/2025 | 4.3 | 25.3 | 16.8 | 88 | 56 | 4.22 | 21.11 | ||
| 10/09/2025 | 4.6 | 0.0 | 26.6 | 17.6 | 92 | 54 | 5.94 | 19.47 | |
| 11/09/2025 | 6.2 | 0.0 | 25.1 | 17.0 | 92 | 19 | 6.84 | 21.90 | |
| 12/09/2025 | 4.5 | 0.2 | 21.7 | 13.8 | 92 | 50 | 9.54 | 19.90 | |
| 13/09/2025 | 3.6 | 0.8 | 22.3 | 15.5 | 93 | 59 | 8.50 | 14.19 | |
| 14/09/2025 | 4.7 | 18.4 | 22.2 | 15.1 | 75 | 56 | 7.19 | 21.45 | |
| 15/09/2025 | 5.1 | 0.2 | 23.3 | 18.2 | 70 | 48 | 5.50 | 21.77 | |
| 16/09/2025 | 4.2 | 0.0 | 25.5 | 18.1 | 81 | 58 | 5.66 | 15.39 | |
| 17/09/2025 | 4.2 | 0.2 | 26.4 | 18.3 | 89 | 65 | 3.70 | 22.00 | |
| 18/09/2025 | 4.5 | 0.0 | 26.9 | 19.5 | 91 | 68 | 5.53 | 22.78 | |
| 19/09/2025 | 4.2 | 0.0 | 27.0 | 20.0 | 90 | 67 | 4.62 | 20.01 | |
| 20/09/2025 | 4.4 | 0.0 | 29.2 | 19.1 | 87 | 55 | 4.25 | 16.64 | |
| Totals: | 81.6 | 23.6 |
