Evapotranspiration Calculations
Colac (Mount Gellibrand) - April 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) |
| 01/04/2026 | 3.7 | 0.0 | | 23.5 | 16.8 | 91 | 40 | 5.92 | 7.85 |
| 02/04/2026 | 3.5 | 0.0 | | 23.2 | 12.7 | 98 | 42 | 4.25 | 15.02 |
| 03/04/2026 | 2.8 | 0.2 | | 17.4 | 10.1 | 100 | 49 | 5.85 | 13.38 |
| 04/04/2026 | | 0.0 | | | 9.1 | 89 | 50 | 7.52 | 15.58 |
| 05/04/2026 | | | | | | | | | 15.99 |
| 07/04/2026 | | | | | | | | | 12.65 |
| 08/04/2026 | | | | | | | | | 14.56 |
| 09/04/2026 | | | | 25.9 | | 93 | 44 | 11.12 | 14.23 |
| 10/04/2026 | 2.2 | 3.6 | | 14.6 | 8.4 | 100 | 64 | 11.68 | 11.54 |
| 11/04/2026 | 1.9 | 5.4 | | 13.8 | 5.5 | 99 | 68 | 12.74 | 11.46 |
| 12/04/2026 | 2.0 | 3.4 | | 15.3 | 7.1 | 100 | 65 | 9.15 | 8.50 |
| 13/04/2026 | 1.7 | 3.2 | | 17.2 | 8.6 | 100 | 77 | 8.29 | 10.86 |
| 14/04/2026 | 1.9 | 1.0 | | 17.7 | 11.2 | 100 | 70 | 6.89 | 9.02 |
| 15/04/2026 | 1.7 | 1.4 | | 17.6 | 11.0 | 100 | 76 | 6.68 | 10.20 |
| 16/04/2026 | 3.7 | 0.6 | | 22.5 | 9.9 | 100 | 49 | 9.76 | 10.30 |
| 17/04/2026 | 2.4 | 4.0 | | 15.7 | 8.2 | 99 | 51 | 6.21 | 12.83 |
| 18/04/2026 | 2.1 | 0.0 | | 15.7 | 8.5 | 90 | 56 | 3.67 | 11.88 |
| 19/04/2026 | 2.6 | 0.2 | | 20.0 | 5.6 | 95 | 44 | 3.53 | 12.03 |
| 20/04/2026 | 1.8 | 0.0 | | 17.6 | 8.3 | 100 | 59 | 3.14 | 9.45 |
| 21/04/2026 | 3.8 | 0.2 | | 26.5 | 10.3 | 100 | 43 | 5.15 | 13.04 |
| 22/04/2026 | 3.9 | 0.0 | | 25.7 | 11.5 | 76 | 34 | 4.32 | 10.23 |
| 23/04/2026 | 3.8 | 0.0 | | 26.5 | 11.6 | 85 | 35 | 3.96 | 13.52 |
| 24/04/2026 | 4.7 | 0.0 | | 24.1 | 11.8 | 77 | 35 | 7.04 | 12.32 |
| 25/04/2026 | 6.0 | 0.0 | | 26.3 | 11.6 | 66 | 28 | 8.00 | 13.08 |
| 26/04/2026 | 4.3 | 0.0 | | 25.1 | 15.3 | 98 | 33 | 6.87 | 11.26 |
| Totals: | 60.5 | 23.2 | | | | | | | |
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