Evapotranspiration Calculations
Rolleston Airport - October 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) |
| 01/10/2026 | | 0.0 | | | | 100 | 16 | 2.57 | 25.06 |
| 02/10/2026 | | 0.0 | | | 10.2 | 100 | 11 | 2.27 | 25.14 |
| 03/10/2026 | 5.5 | 0.0 | | 31.9 | 10.4 | 68 | 15 | 1.82 | 25.30 |
| 04/10/2026 | 5.3 | 0.0 | | 32.3 | 11.4 | 57 | 20 | 1.50 | 25.42 |
| 05/10/2026 | 5.3 | 0.0 | | 33.3 | 14.0 | 68 | 21 | 1.36 | 25.52 |
| 06/10/2026 | 6.2 | 0.0 | | 34.0 | 17.3 | 95 | 25 | 2.61 | 24.88 |
| 07/10/2026 | | 9.0 | | | 18.1 | 100 | 32 | 2.00 | 19.24 |
| 08/10/2026 | | 21.2 | | 29.4 | | 100 | 36 | 2.04 | 21.42 |
| 09/10/2026 | 5.4 | 0.0 | | 31.6 | 16.7 | 96 | 28 | 2.07 | 23.92 |
| 10/10/2026 | 3.3 | 0.0 | | 28.1 | 18.7 | 95 | 49 | 1.89 | 12.73 |
| 11/10/2026 | | 2.0 | | | 16.1 | 100 | 23 | 1.70 | 25.73 |
| 12/10/2026 | 5.9 | 0.0 | | 34.8 | 17.2 | 87 | 22 | 1.81 | 25.75 |
| 13/10/2026 | 5.5 | 0.0 | | 34.0 | 18.7 | 86 | 31 | 2.31 | 20.94 |
| 14/10/2026 | 5.1 | 0.0 | | 30.9 | 19.4 | 99 | 40 | 2.79 | 20.69 |
| 15/10/2026 | 2.7 | 0.2 | | 23.3 | 19.5 | 100 | 55 | 3.65 | 8.84 |
| 16/10/2026 | 3.0 | 9.2 | | 24.3 | 18.2 | 90 | 54 | 3.01 | 10.16 |
| 17/10/2026 | 2.2 | 0.0 | | 20.4 | 17.9 | 100 | 65 | 2.97 | 8.68 |
| 18/10/2026 | 1.8 | 4.2 | | 20.6 | 16.4 | 100 | 85 | 2.44 | 9.06 |
| 19/10/2026 | 3.6 | 3.4 | | 25.9 | 15.8 | 97 | 53 | 1.81 | 17.04 |
| 20/10/2026 | 4.9 | 0.0 | | 29.1 | 18.3 | 98 | 42 | 2.49 | 22.02 |
| 21/10/2026 | 4.2 | 0.0 | | 29.4 | 17.2 | 100 | 41 | 1.96 | 18.17 |
| 22/10/2026 | 4.7 | 31.2 | | 30.8 | 18.2 | 100 | 44 | 2.18 | 20.11 |
| 23/10/2026 | 2.9 | 28.2 | | 25.4 | 19.4 | 100 | 57 | 2.38 | 11.89 |
| 24/10/2026 | 3.1 | 10.4 | | 26.2 | 19.0 | 100 | 68 | 2.78 | 14.24 |
| 25/10/2026 | 4.5 | 5.6 | | 30.5 | 20.3 | 100 | 48 | 2.38 | 18.78 |
| 26/10/2026 | 6.2 | 0.0 | | 33.3 | 21.6 | 96 | 40 | 2.95 | 25.55 |
| Totals: | 91.3 | 124.6 | | | | | | | |
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