Evapotranspiration Calculations
Ballina Airport - September 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) |
|---|---|---|---|---|---|---|---|---|---|
| 01/09/2025 | 2.0 | 2.6 | 19.9 | 9.3 | 98 | 66 | 2.07 | 11.14 | |
| 02/09/2025 | 2.6 | 1.6 | 21.1 | 9.5 | 99 | 64 | 1.47 | 18.45 | |
| 03/09/2025 | 2.7 | 0.0 | 22.9 | 8.8 | 99 | 56 | 1.23 | 18.02 | |
| 04/09/2025 | 3.2 | 0.0 | 25.4 | 9.6 | 99 | 52 | 1.91 | 18.19 | |
| 05/09/2025 | 4.8 | 0.0 | 24.2 | 14.8 | 93 | 31 | 4.98 | 19.79 | |
| 06/09/2025 | 2.9 | 1.4 | 20.5 | 15.9 | 94 | 51 | 3.96 | 12.71 | |
| 07/09/2025 | 3.4 | 0.2 | 22.1 | 8.9 | 97 | 43 | 2.55 | 19.63 | |
| 08/09/2025 | 3.8 | 0.0 | 23.8 | 9.0 | 99 | 51 | 4.33 | 20.43 | |
| 09/09/2025 | 3.8 | 0.0 | 27.4 | 11.0 | 97 | 43 | 2.58 | 17.45 | |
| 10/09/2025 | 3.2 | 0.0 | 26.7 | 16.0 | 95 | 46 | 2.53 | 12.36 | |
| 11/09/2025 | 5.3 | 0.0 | 21.7 | 14.5 | 83 | 32 | 7.32 | 20.94 | |
| 12/09/2025 | 2.9 | 0.0 | 20.6 | 9.9 | 97 | 54 | 3.68 | 13.81 | |
| 13/09/2025 | 2.6 | 0.4 | 21.1 | 11.1 | 98 | 60 | 2.13 | 15.36 | |
| 14/09/2025 | 3.4 | 0.0 | 22.9 | 9.7 | 99 | 51 | 2.12 | 21.04 | |
| 15/09/2025 | 4.0 | 0.0 | 24.4 | 8.7 | 98 | 48 | 3.43 | 21.51 | |
| 16/09/2025 | 4.2 | 0.0 | 25.0 | 8.4 | 98 | 50 | 4.34 | 21.59 | |
| 17/09/2025 | 4.3 | 0.0 | 27.9 | 14.2 | 96 | 54 | 3.36 | 21.79 | |
| 18/09/2025 | 3.6 | 0.0 | 24.0 | 14.6 | 97 | 67 | 4.08 | 21.14 | |
| 19/09/2025 | 3.7 | 0.0 | 25.5 | 16.1 | 96 | 68 | 3.77 | 20.16 | |
| 20/09/2025 | 2.6 | 10.8 | 23.7 | 18.6 | 95 | 59 | 3.45 | 8.51 | |
| Totals: | 69.0 | 17.0 |
