Evapotranspiration Calculations
Perth Airport Mo - 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 | | 1.8 | 3.6 | 19.2 | 8.0 | | | | 13.89 |
| 02/09/2026 | | 0.0 | 2.0 | 19.1 | 7.1 | | | | 11.61 |
| 03/09/2026 | | 2.0 | | 18.9 | 13.2 | | | | 11.64 |
| 04/09/2026 | | 2.6 | 2.0 | 20.7 | 14.1 | | | | 15.01 |
| 05/09/2026 | | 0.2 | 3.6 | 20.2 | 13.2 | | | | 13.24 |
| 06/09/2026 | | 7.2 | | 18.7 | 11.8 | | | | 12.77 |
| 07/09/2026 | | 0.0 | 2.0 | 23.9 | 12.3 | | | | 18.49 |
| 08/09/2026 | | 0.0 | 3.4 | 21.7 | 13.3 | | | | 16.27 |
| 09/09/2026 | | 0.0 | 5.0 | 22.0 | 10.1 | | | | 19.00 |
| 10/09/2026 | | 0.0 | 4.4 | 23.5 | 10.4 | | | | 19.87 |
| 11/09/2026 | 2.6 | 0.0 | 4.0 | 26.9 | 13.2 | 89 | 35 | 0.00 | 19.33 |
| 12/09/2026 | 2.6 | 2.4 | 4.4 | 21.9 | 15.3 | 95 | 44 | 0.00 | 18.83 |
| 13/09/2026 | 2.0 | 0.0 | 3.8 | 21.5 | 9.7 | 91 | 45 | 0.00 | 14.52 |
| 14/09/2026 | 2.4 | 0.0 | 3.0 | 23.8 | 8.7 | 96 | 39 | 0.00 | 18.32 |
| 15/09/2026 | 2.5 | 0.0 | 6.0 | 26.0 | 13.9 | 70 | 45 | 0.00 | 17.57 |
| 16/09/2026 | 3.1 | 0.0 | 4.0 | 30.9 | 16.1 | 84 | 40 | 0.00 | 20.07 |
| Totals: | 15.2 | 16.2 | 51.2 | | | | | | |
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