Evapotranspiration Calculations
Perth Airport - 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 | 5.7 | 4.0 | 3.4 | 22.8 | 14.5 | 90 | 32 | 6.43 | 23.79 |
| 02/11/2025 | 6.4 | 0.2 | 6.2 | 25.8 | 9.6 | 87 | 22 | 4.51 | 28.17 |
| 03/11/2025 | 9.9 | 0.0 | 8.0 | 30.4 | 11.7 | 58 | 13 | 7.75 | 28.46 |
| 04/11/2025 | 7.3 | 0.0 | 11.6 | 27.2 | 18.9 | 88 | 23 | 8.12 | 21.12 |
| 05/11/2025 | 5.0 | 2.6 | 5.4 | 26.1 | 14.7 | 91 | 47 | 4.07 | 22.86 |
| 06/11/2025 | 5.2 | 0.0 | 6.4 | 25.0 | 15.8 | 88 | 48 | 6.17 | 21.30 |
| 07/11/2025 | 6.2 | 0.0 | 3.8 | 26.7 | 13.6 | 83 | 30 | 4.38 | 25.63 |
| 08/11/2025 | 8.8 | 0.0 | 8.0 | 28.5 | 13.5 | 66 | 22 | 7.76 | 29.02 |
| 09/11/2025 | 9.7 | 0.0 | 9.0 | 30.7 | 14.5 | 61 | 20 | 7.98 | 28.92 |
| 10/11/2025 | 11.0 | 0.0 | 9.2 | 31.3 | 14.8 | 61 | 16 | 10.03 | 29.19 |
| 11/11/2025 | 11.2 | 0.0 | 10.6 | 34.0 | 16.4 | 61 | 13 | 7.87 | 29.29 |
| 12/11/2025 | 8.2 | 0.0 | 9.6 | 32.2 | 14.5 | 71 | 19 | 4.41 | 29.44 |
| 13/11/2025 | 6.8 | 0.0 | 8.4 | 25.9 | 14.2 | 72 | 33 | 5.43 | 29.09 |
| 14/11/2025 | 7.0 | 0.0 | 6.8 | 26.8 | 11.9 | 82 | 32 | 5.82 | 29.72 |
| 15/11/2025 | 7.0 | 0.0 | 7.8 | 26.1 | 10.8 | 77 | 32 | 6.14 | 29.72 |
| 16/11/2025 | 7.5 | 0.0 | 6.6 | 29.5 | 13.4 | 83 | 24 | 4.86 | 29.82 |
| 17/11/2025 | 10.3 | 0.0 | 8.0 | 36.2 | 13.6 | 85 | 14 | 6.16 | 28.48 |
| 18/11/2025 | 7.1 | 0.0 | 10.8 | 30.8 | 18.4 | 66 | 30 | 5.88 | 16.45 |
| 19/11/2025 | 7.4 | 0.0 | 5.6 | 30.7 | 17.7 | 66 | 34 | 5.78 | 22.50 |
| 20/11/2025 | 7.6 | 0.0 | 6.2 | 32.2 | 17.5 | 78 | 32 | 4.64 | 27.90 |
| 21/11/2025 | 7.4 | 0.0 | 7.8 | 31.2 | 17.1 | 76 | 31 | 5.09 | 25.23 |
| 22/11/2025 | 5.2 | 0.0 | 7.2 | 25.3 | 18.7 | 76 | 50 | 6.02 | 17.29 |
| 23/11/2025 | 5.7 | 0.6 | 4.8 | 23.0 | 16.0 | 89 | 39 | 7.65 | 22.71 |
| 24/11/2025 | 5.6 | 0.8 | 6.2 | 24.0 | 14.4 | 88 | 34 | 5.98 | 21.62 |
| 25/11/2025 | 5.7 | 0.0 | 7.0 | 24.1 | 15.1 | 81 | 39 | 5.39 | 23.66 |
| Totals: | 184.9 | 8.2 | 184.4 |
