Evapotranspiration Calculations
Perth Metro - November 2025 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) |
| 01/11/2025 | 5.0 | 4.4 | | 20.6 | 15.7 | 78 | 41 | 4.32 | 24.27 |
| 02/11/2025 | 5.2 | 0.0 | | 24.3 | 7.6 | 89 | 26 | 2.54 | 28.36 |
| 03/11/2025 | 7.0 | 0.0 | | 30.1 | 12.9 | 60 | 14 | 3.10 | 28.61 |
| 04/11/2025 | 5.4 | 0.0 | | 26.4 | 19.1 | 88 | 25 | 3.12 | 21.79 |
| 05/11/2025 | 4.7 | 7.2 | | 24.9 | 14.7 | 98 | 50 | 2.44 | 25.87 |
| 06/11/2025 | 4.6 | 0.0 | | 22.8 | 16.7 | 84 | 52 | 4.08 | 21.63 |
| 07/11/2025 | 5.5 | 0.0 | | 25.5 | 12.8 | 82 | 31 | 2.74 | 27.48 |
| 08/11/2025 | 6.5 | 0.0 | | 27.7 | 13.5 | 68 | 26 | 3.18 | 29.20 |
| 09/11/2025 | 7.2 | 0.0 | | 29.8 | 14.5 | 60 | 23 | 3.51 | 29.09 |
| 10/11/2025 | 7.5 | 0.0 | | 30.8 | 14.9 | 61 | 17 | 3.49 | 29.45 |
| 11/11/2025 | 8.1 | 0.0 | | 33.9 | 16.5 | 56 | 13 | 3.36 | 29.57 |
| 12/11/2025 | 6.7 | 0.0 | | 30.6 | 14.7 | 77 | 20 | 2.54 | 29.67 |
| 13/11/2025 | 6.0 | 0.0 | | 24.1 | 14.6 | 69 | 38 | 3.62 | 29.56 |
| 14/11/2025 | 5.8 | 0.0 | | 24.1 | 13.3 | 75 | 40 | 3.66 | 30.01 |
| 15/11/2025 | 5.6 | 0.0 | | 23.4 | 10.8 | 84 | 36 | 3.66 | 29.99 |
| 16/11/2025 | 6.4 | 0.0 | | 27.7 | 13.7 | 82 | 28 | 3.05 | 30.10 |
| 17/11/2025 | 7.6 | 0.0 | | 34.5 | 14.7 | 87 | 18 | 3.03 | 29.29 |
| 18/11/2025 | 5.4 | 0.0 | | 30.4 | 18.9 | 61 | 37 | 2.87 | 18.51 |
| 19/11/2025 | 6.1 | 0.0 | | 30.1 | 18.0 | 67 | 37 | 3.05 | 23.94 |
| 20/11/2025 | 6.1 | 0.4 | | 31.0 | 17.8 | 80 | 36 | 2.76 | 25.33 |
| 21/11/2025 | 6.5 | 0.0 | | 30.3 | 17.1 | 78 | 35 | 2.92 | 28.50 |
| 22/11/2025 | 4.5 | 0.0 | | 25.0 | 18.7 | 81 | 54 | 3.34 | 19.70 |
| 23/11/2025 | 5.4 | 0.6 | | 21.8 | 15.9 | 85 | 39 | 4.67 | 26.62 |
| 24/11/2025 | 5.3 | 3.0 | | 21.8 | 15.2 | 78 | 35 | 3.99 | 24.56 |
| Totals: | 144.1 | 15.6 | | | | | | | |
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