Evapotranspiration Calculations
Colac (Mount Gellibrand) - January 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) |
|---|---|---|---|---|---|---|---|---|---|
| 01/01/2026 | 22.3 | 98 | 44 | 5.33 | 30.87 | ||||
| 02/01/2026 | 5.6 | 0.0 | 24.1 | 9.8 | 98 | 49 | 6.53 | 30.58 | |
| 03/01/2026 | 6.3 | 0.0 | 29.9 | 13.4 | 100 | 39 | 5.58 | 23.15 | |
| 04/01/2026 | 5.6 | 0.0 | 24.2 | 13.8 | 93 | 35 | 4.89 | 24.76 | |
| 05/01/2026 | 5.9 | 0.0 | 26.9 | 9.1 | 98 | 32 | 2.53 | 30.51 | |
| 06/01/2026 | 7.0 | 0.0 | 32.1 | 10.4 | 100 | 30 | 3.12 | 30.34 | |
| 07/01/2026 | 14.0 | 0.0 | 42.7 | 14.8 | 83 | 14 | 8.64 | 25.14 | |
| 08/01/2026 | 8.2 | 0.0 | 32.9 | 21.3 | 76 | 31 | 6.22 | 23.84 | |
| 09/01/2026 | 13.5 | 0.0 | 41.3 | 14.1 | 86 | 16 | 10.76 | 14.69 | |
| 10/01/2026 | 5.6 | 0.2 | 21.7 | 13.1 | 90 | 42 | 12.47 | 20.46 | |
| 11/01/2026 | 4.8 | 0.0 | 20.4 | 9.1 | 96 | 42 | 5.59 | 25.58 | |
| 12/01/2026 | 4.2 | 0.0 | 21.9 | 9.6 | 90 | 52 | 2.91 | 23.20 | |
| 13/01/2026 | 2.9 | 0.0 | 21.0 | 9.8 | 95 | 58 | 0.00 | 17.40 | |
| 14/01/2026 | 3.8 | 0.0 | 23.4 | 11.1 | 98 | 54 | 0.00 | 23.01 | |
| 15/01/2026 | 2.0 | 0.2 | 19.2 | 14.2 | 100 | 82 | 0.00 | 10.20 | |
| 16/01/2026 | 3.1 | 2.6 | 20.3 | 14.0 | 100 | 57 | 0.00 | 17.81 | |
| Totals: | 92.5 | 3.0 |
