Evapotranspiration Calculations
Rolleston Airport - May 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) |
| 01/05/2026 | 3.8 | 0.0 | | 28.0 | 13.4 | 88 | 34 | 2.50 | 17.09 |
| 02/05/2026 | 4.0 | 0.0 | | 29.1 | 12.0 | 84 | 40 | 3.00 | 15.90 |
| 03/05/2026 | 2.8 | 0.0 | | 26.3 | 18.6 | 87 | 50 | 2.09 | 11.68 |
| 04/05/2026 | 3.4 | 0.0 | | 30.3 | 17.5 | 84 | 32 | 1.42 | 16.95 |
| 05/05/2026 | 2.6 | 0.0 | | 27.4 | 13.7 | 85 | 42 | 1.27 | 12.45 |
| 06/05/2026 | 4.1 | 0.0 | | 30.1 | 17.9 | 78 | 37 | 2.73 | 15.56 |
| 07/05/2026 | 3.5 | 0.0 | | 23.9 | 18.7 | 73 | 34 | 2.98 | 12.09 |
| 08/05/2026 | 4.5 | 0.0 | | 21.9 | 11.0 | 56 | 16 | 3.82 | 16.38 |
| 09/05/2026 | 3.8 | 0.0 | | 25.8 | 7.7 | 63 | 22 | 2.45 | 16.96 |
| 10/05/2026 | 2.5 | 0.0 | | 23.8 | 10.0 | 79 | 45 | 2.05 | 10.27 |
| 11/05/2026 | 3.5 | 0.0 | | 27.0 | 12.3 | 94 | 40 | 3.06 | 14.18 |
| 12/05/2026 | 3.8 | 0.0 | | 26.5 | 14.3 | 89 | 38 | 3.61 | 14.28 |
| 13/05/2026 | 4.0 | 0.0 | | 26.3 | 12.5 | 85 | 31 | 3.58 | 14.83 |
| 14/05/2026 | 3.1 | 0.0 | | 25.4 | 13.4 | 85 | 43 | 2.89 | 12.54 |
| 15/05/2026 | 3.5 | 0.8 | | 27.1 | 11.2 | 92 | 37 | 2.77 | 15.30 |
| 16/05/2026 | 2.8 | 0.0 | | 25.4 | 11.8 | 96 | 41 | 2.22 | 13.55 |
| 17/05/2026 | 3.2 | 0.0 | | 27.3 | 13.1 | 81 | 38 | 2.08 | 15.29 |
| Totals: | 58.9 | 0.8 | | | | | | | |
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