Evapotranspiration Calculations
Onslow 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 | 5.9 | 0.0 | 30.0 | 14.6 | 77 | 20 | 3.67 | 21.53 | |
| 02/09/2025 | 5.2 | 0.0 | 31.1 | 17.7 | 98 | 32 | 3.26 | 21.32 | |
| 03/09/2025 | 6.3 | 0.0 | 30.5 | 18.9 | 80 | 30 | 4.76 | 22.16 | |
| 04/09/2025 | 6.5 | 0.0 | 30.1 | 18.3 | 79 | 36 | 5.91 | 22.52 | |
| 05/09/2025 | 4.9 | 0.0 | 26.1 | 18.0 | 97 | 50 | 5.98 | 22.34 | |
| 06/09/2025 | 5.3 | 3.6 | 25.3 | 15.1 | 98 | 35 | 6.29 | 21.88 | |
| 07/09/2025 | 6.0 | 0.2 | 25.3 | 14.1 | 71 | 32 | 5.94 | 22.88 | |
| 08/09/2025 | 7.3 | 0.0 | 27.9 | 14.9 | 63 | 22 | 6.39 | 23.02 | |
| 09/09/2025 | 7.9 | 0.0 | 30.4 | 16.4 | 59 | 19 | 5.95 | 23.10 | |
| 10/09/2025 | 6.9 | 0.0 | 28.7 | 15.5 | 67 | 15 | 4.76 | 23.25 | |
| 11/09/2025 | 6.6 | 0.0 | 29.0 | 15.6 | 89 | 17 | 4.90 | 23.40 | |
| 12/09/2025 | 6.5 | 0.0 | 29.7 | 16.0 | 89 | 20 | 4.51 | 23.55 | |
| 13/09/2025 | 6.7 | 0.0 | 32.4 | 16.0 | 93 | 16 | 3.88 | 23.68 | |
| 14/09/2025 | 6.3 | 0.0 | 29.6 | 19.2 | 77 | 37 | 5.20 | 22.91 | |
| 15/09/2025 | 7.5 | 0.0 | 28.8 | 19.5 | 69 | 31 | 7.20 | 23.62 | |
| 16/09/2025 | 8.2 | 0.0 | 30.0 | 15.9 | 59 | 17 | 6.23 | 23.95 | |
| 17/09/2025 | 8.4 | 0.0 | 31.8 | 15.6 | 54 | 16 | 5.72 | 24.08 | |
| 18/09/2025 | 8.0 | 0.0 | 33.7 | 17.6 | 90 | 14 | 5.15 | 24.12 | |
| 19/09/2025 | 6.7 | 0.0 | 31.1 | 17.5 | 98 | 22 | 4.70 | 24.26 | |
| 20/09/2025 | 5.5 | 0.0 | 30.5 | 19.3 | 98 | 46 | 3.93 | 24.49 | |
| Totals: | 132.6 | 3.8 |
