Evapotranspiration Calculations
Perth Metro - 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 | 2.5 | 2.6 | 19.2 | 8.3 | 99 | 41 | 1.81 | 15.39 | |
| 02/09/2026 | 2.2 | 0.0 | 19.2 | 8.5 | 99 | 51 | 1.65 | 13.42 | |
| 03/09/2026 | 2.2 | 1.6 | 19.2 | 13.1 | 99 | 59 | 2.08 | 12.96 | |
| 04/09/2026 | 3.0 | 3.0 | 19.5 | 14.4 | 92 | 49 | 3.70 | 15.78 | |
| 05/09/2026 | 2.4 | 0.2 | 19.8 | 13.7 | 99 | 54 | 2.14 | 13.22 | |
| 06/09/2026 | 2.4 | 10.0 | 18.1 | 12.2 | 99 | 58 | 3.45 | 13.19 | |
| 07/09/2026 | 3.4 | 0.0 | 22.9 | 10.8 | 85 | 48 | 2.50 | 19.00 | |
| 08/09/2026 | 3.7 | 0.0 | 21.7 | 12.8 | 74 | 37 | 3.06 | 17.24 | |
| 09/09/2026 | 3.6 | 0.0 | 21.9 | 10.6 | 69 | 44 | 2.83 | 19.27 | |
| Totals: | 25.4 | 17.4 |
