Evapotranspiration Calculations
Rottnest Island - 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 | 3.1 | 1.0 | 17.1 | 12.5 | 83 | 48 | 4.58 | 15.19 | |
| 02/09/2026 | 2.8 | 0.0 | 18.3 | 14.2 | 95 | 50 | 4.75 | 12.36 | |
| 03/09/2026 | 3.1 | 2.8 | 18.9 | 13.0 | 96 | 56 | 7.53 | 15.01 | |
| 04/09/2026 | 3.5 | 5.8 | 19.0 | 14.1 | 91 | 54 | 9.07 | 14.40 | |
| 05/09/2026 | 2.8 | 0.0 | 18.6 | 14.3 | 96 | 58 | 6.94 | 12.60 | |
| 06/09/2026 | 2.9 | 11.8 | 16.9 | 13.0 | 93 | 62 | 11.92 | 12.23 | |
| 07/09/2026 | 3.1 | 0.0 | 18.3 | 12.1 | 81 | 70 | 7.80 | 19.18 | |
| 08/09/2026 | 3.9 | 0.0 | 19.0 | 13.4 | 78 | 49 | 6.61 | 16.89 | |
| 09/09/2026 | 4.6 | 0.0 | 20.5 | 11.5 | 69 | 48 | 8.02 | 19.45 | |
| 10/09/2026 | 4.0 | 0.0 | 20.9 | 13.4 | 82 | 49 | 5.62 | 19.77 | |
| 11/09/2026 | 4.3 | 0.0 | 23.3 | 15.2 | 89 | 55 | 7.74 | 19.79 | |
| 12/09/2026 | 4.0 | 0.8 | 19.8 | 15.7 | 92 | 49 | 7.51 | 19.46 | |
| 13/09/2026 | 3.2 | 0.0 | 19.9 | 14.8 | 90 | 52 | 4.96 | 13.85 | |
| 14/09/2026 | 3.4 | 0.0 | 19.9 | 13.8 | 90 | 59 | 6.06 | 17.87 | |
| 15/09/2026 | 3.9 | 0.2 | 21.5 | 14.2 | 82 | 55 | 6.07 | 17.14 | |
| Totals: | 52.6 | 22.4 |
