Evapotranspiration Calculations
Rottnest Island - August 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) |
| 01/08/2026 | 3.0 | 1.2 | | 16.7 | 13.6 | 83 | 53 | 7.87 | 12.94 |
| 02/08/2026 | 3.2 | 0.2 | | 16.5 | 10.4 | 69 | 46 | 6.17 | 14.22 |
| 03/08/2026 | 2.9 | 0.0 | | 20.4 | 11.3 | 88 | 56 | 6.02 | 14.17 |
| 04/08/2026 | 2.9 | 4.4 | | 19.0 | 15.0 | 94 | 52 | 6.18 | 14.11 |
| 05/08/2026 | 2.4 | 0.2 | | 19.0 | 14.5 | 79 | 55 | 3.36 | 12.12 |
| 06/08/2026 | 3.0 | 0.0 | | 19.8 | 14.0 | 93 | 49 | 6.14 | 12.28 |
| 07/08/2026 | 2.6 | 2.8 | | 18.6 | 14.2 | 95 | 61 | 7.31 | 14.02 |
| 08/08/2026 | 3.3 | 6.4 | | 14.1 | 8.3 | 92 | 41 | 13.93 | 7.57 |
| 09/08/2026 | 2.5 | 7.4 | | 16.5 | 7.4 | 95 | 53 | 6.33 | 13.99 |
| 10/08/2026 | 3.1 | 4.4 | | 17.5 | 13.2 | 87 | 58 | 12.88 | 7.93 |
| 11/08/2026 | 2.8 | 3.0 | | 15.8 | 8.7 | 82 | 54 | 6.42 | 14.65 |
| 12/08/2026 | 2.6 | 0.2 | | 18.3 | 11.6 | 80 | 57 | 3.80 | 15.03 |
| 13/08/2026 | 2.8 | 0.0 | | 17.3 | 11.0 | 82 | 52 | 4.62 | 15.39 |
| 14/08/2026 | 3.3 | 0.0 | | 20.8 | 11.6 | 81 | 45 | 4.37 | 15.12 |
| 15/08/2026 | 3.5 | 0.0 | | 21.7 | 14.4 | 82 | 48 | 5.02 | 15.66 |
| 16/08/2026 | 4.6 | 0.0 | | 23.2 | 13.8 | 71 | 44 | 6.92 | 15.91 |
| 17/08/2026 | 3.5 | 0.0 | | 19.5 | 16.5 | 95 | 48 | 10.92 | 9.33 |
| 18/08/2026 | 3.2 | 4.6 | | 18.6 | 11.7 | 79 | 46 | 5.29 | 12.40 |
| 19/08/2026 | 3.2 | 0.4 | | 19.7 | 13.6 | 87 | 53 | 5.36 | 16.22 |
| 20/08/2026 | 2.4 | 1.0 | | 19.8 | 13.4 | 95 | 65 | 3.79 | 15.43 |
| 21/08/2026 | 2.9 | 0.2 | | 18.7 | 13.0 | 88 | 63 | 6.28 | 16.56 |
| 22/08/2026 | 2.8 | 0.0 | | 20.3 | 14.8 | 85 | 63 | 6.51 | 10.40 |
| 23/08/2026 | 2.7 | 0.0 | | 19.0 | 14.7 | 95 | 67 | 7.23 | 16.46 |
| 24/08/2026 | 3.3 | 4.4 | | 18.5 | 13.2 | 73 | 53 | 4.64 | 16.94 |
| 25/08/2026 | 3.4 | 0.0 | | 20.1 | 14.6 | 82 | 62 | 8.80 | 14.29 |
| 26/08/2026 | 1.7 | 1.4 | | 17.1 | 15.7 | 95 | 78 | 8.24 | 7.67 |
| Totals: | 77.6 | 42.2 | | | | | | | |
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