Evapotranspiration Calculations
Roxby Downs (Olympic Dam Aerodrome) - 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 | 3.3 | 0.0 | 20.7 | 4.5 | 86 | 29 | 2.35 | 19.05 | |
| 02/09/2025 | 4.0 | 0.0 | 23.5 | 4.5 | 73 | 18 | 2.65 | 19.09 | |
| 03/09/2025 | 5.4 | 0.0 | 25.6 | 8.5 | 55 | 13 | 3.81 | 19.29 | |
| 04/09/2025 | 4.9 | 0.0 | 26.1 | 6.5 | 48 | 11 | 2.90 | 19.33 | |
| 05/09/2025 | 7.8 | 0.0 | 28.9 | 15.2 | 54 | 11 | 6.45 | 18.44 | |
| 06/09/2025 | 11.5 | 0.0 | 33.6 | 18.5 | 34 | 9 | 9.37 | 19.75 | |
| 07/09/2025 | 7.0 | 0.0 | 29.0 | 16.5 | 54 | 17 | 5.34 | 19.93 | |
| 08/09/2025 | 5.3 | 0.0 | 29.4 | 9.4 | 51 | 16 | 3.12 | 17.03 | |
| 09/09/2025 | 0.0 | 12.3 | 64 | 22 | 6.23 | 20.15 | |||
| 10/09/2025 | 4.2 | 18.7 | 8.9 | 71 | 39 | 6.29 | 17.16 | ||
| 11/09/2025 | 3.8 | 0.0 | 20.0 | 7.3 | 87 | 37 | 4.55 | 17.88 | |
| 12/09/2025 | 3.7 | 0.0 | 21.0 | 8.1 | 88 | 28 | 3.04 | 18.16 | |
| 13/09/2025 | 4.1 | 0.0 | 22.8 | 4.6 | 68 | 22 | 2.66 | 20.38 | |
| 14/09/2025 | 6.9 | 0.0 | 26.4 | 7.9 | 55 | 13 | 5.67 | 20.82 | |
| 15/09/2025 | 10.5 | 0.0 | 33.1 | 15.3 | 52 | 8 | 8.85 | 15.54 | |
| 16/09/2025 | 5.0 | 0.2 | 23.1 | 12.9 | 71 | 25 | 5.02 | 15.57 | |
| 17/09/2025 | 4.1 | 0.0 | 23.2 | 5.3 | 76 | 18 | 2.20 | 21.54 | |
| 18/09/2025 | 7.5 | 0.0 | 29.1 | 10.6 | 42 | 16 | 5.49 | 21.00 | |
| 19/09/2025 | 6.9 | 0.0 | 26.7 | 18.0 | 54 | 18 | 6.00 | 16.83 | |
| 20/09/2025 | 4.8 | 0.0 | 21.4 | 10.9 | 75 | 27 | 4.35 | 21.52 | |
| Totals: | 110.7 | 0.2 |
