Evapotranspiration Calculations
Grampians (Mount William) - September 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) |
|---|---|---|---|---|---|---|---|---|---|
| 01/09/2026 | 2.5 | 0.0 | 11.3 | 6.4 | 100 | 45 | 10.84 | 11.63 | |
| 02/09/2026 | 0.9 | 10.0 | 5.6 | 2.1 | 100 | 89 | 7.78 | 12.64 | |
| 03/09/2026 | 1.2 | 2.0 | 7.1 | 2.3 | 100 | 72 | 7.61 | 10.04 | |
| 04/09/2026 | 1.0 | 0.6 | 8.5 | 0.9 | 100 | 85 | 8.83 | 10.99 | |
| 05/09/2026 | 0.5 | 21.8 | 5.6 | 3.3 | 100 | 96 | 11.47 | 8.62 | |
| 06/09/2026 | 0.9 | 22.0 | 7.8 | 3.0 | 100 | 93 | 6.36 | 11.92 | |
| 07/09/2026 | 3.3 | 3.6 | 10.3 | 2.1 | 100 | 10 | 7.60 | 14.03 | |
| 08/09/2026 | 3.1 | 0.4 | 11.3 | 0.7 | 100 | 5 | 4.24 | 17.55 | |
| 09/09/2026 | 1.2 | 1.6 | 6.9 | -0.3 | 100 | 77 | 9.28 | 14.03 | |
| 10/09/2026 | 3.8 | 0.4 | 11.6 | 0.2 | 100 | 8 | 8.51 | 17.92 | |
| 11/09/2026 | 3.9 | 0.2 | 14.2 | 5.1 | 79 | 7 | 4.81 | 18.11 | |
| 12/09/2026 | 2.9 | 0.0 | 13.5 | 7.2 | 86 | 52 | 6.70 | 18.14 | |
| 13/09/2026 | 3.1 | 0.0 | 13.8 | 8.8 | 97 | 41 | 10.37 | 11.99 | |
| 14/09/2026 | 1.8 | 1.4 | 11.1 | 4.4 | 99 | 78 | 6.64 | 17.87 | |
| 15/09/2026 | 1.6 | 3.0 | 5.4 | 0.8 | 100 | 63 | 7.63 | 15.65 | |
| Totals: | 31.7 | 67.0 |
