Evapotranspiration Calculations
Rolleston Airport - September 2026 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) |
| 01/09/2026 | 3.9 | 0.0 | | 27.2 | 8.3 | 88 | 24 | 1.69 | 20.18 |
| 02/09/2026 | 3.8 | 0.0 | | 28.4 | 7.8 | 84 | 24 | 1.30 | 20.92 |
| 03/09/2026 | 4.5 | 0.0 | | 31.7 | 10.8 | 73 | 20 | 1.65 | 21.04 |
| 04/09/2026 | 4.2 | 0.0 | | 33.3 | 10.5 | 71 | 14 | 1.24 | 21.16 |
| 05/09/2026 | 4.5 | 0.0 | | 33.2 | 12.4 | 65 | 16 | 1.40 | 21.20 |
| 06/09/2026 | 5.0 | 0.0 | | 34.4 | 14.9 | 57 | 16 | 1.71 | 21.39 |
| 07/09/2026 | 5.4 | 0.0 | | 33.8 | 13.5 | 58 | 15 | 2.20 | 20.66 |
| 08/09/2026 | 5.4 | 0.0 | | 29.7 | 10.2 | 51 | 10 | 2.53 | 21.63 |
| 09/09/2026 | | 0.0 | | | 11.5 | 73 | 26 | 1.34 | 19.97 |
| 10/09/2026 | | 0.0 | | 28.2 | | 100 | 30 | 2.77 | 18.27 |
| 11/09/2026 | | 0.0 | | | 15.7 | 63 | 23 | 3.99 | 21.88 |
| 12/09/2026 | 4.5 | 0.0 | | 27.5 | 9.8 | 100 | 24 | 2.35 | 21.04 |
| 13/09/2026 | 5.0 | 0.0 | | 27.9 | 10.0 | 86 | 22 | 2.81 | 21.98 |
| 14/09/2026 | 4.8 | 0.0 | | 28.7 | 8.8 | 78 | 18 | 2.09 | 22.28 |
| 15/09/2026 | 4.7 | 0.0 | | 30.4 | 8.7 | 73 | 20 | 1.76 | 22.41 |
| Totals: | 55.7 | 0.0 | | | | | | | |
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