Evapotranspiration Calculations
Grafton Airport - January 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) |
| 01/01/2026 | 5.1 | 0.0 | | 29.9 | 17.2 | 95 | 51 | 3.00 | 21.91 |
| 02/01/2026 | 3.3 | 0.6 | | 25.3 | 19.4 | 92 | 55 | 2.79 | 12.53 |
| 03/01/2026 | 4.8 | 0.0 | | 30.7 | 18.4 | 85 | 53 | 1.60 | 22.04 |
| 04/01/2026 | 5.1 | 0.0 | | 32.2 | 17.9 | 95 | 49 | 2.17 | 21.90 |
| 05/01/2026 | 4.7 | 14.4 | | 31.8 | 18.1 | 97 | 50 | 1.84 | 20.14 |
| 06/01/2026 | 6.0 | 0.2 | | 31.3 | 18.7 | 96 | 51 | 2.23 | 28.91 |
| 07/01/2026 | 6.1 | 0.0 | | 31.4 | 17.6 | 97 | 46 | 1.92 | 29.79 |
| 08/01/2026 | 6.1 | 0.0 | | 32.0 | 16.4 | 97 | 43 | 1.81 | 29.93 |
| 09/01/2026 | 6.4 | 0.0 | | 32.1 | 16.4 | 97 | 41 | 2.63 | 29.07 |
| 10/01/2026 | 7.1 | 0.0 | | 34.3 | 18.1 | 96 | 39 | 3.09 | 30.07 |
| 11/01/2026 | 6.9 | 0.0 | | 32.5 | 20.1 | 96 | 51 | 4.83 | 29.78 |
| 12/01/2026 | 5.6 | 0.0 | | 30.5 | 21.4 | 83 | 45 | 4.92 | 17.38 |
| 13/01/2026 | 6.1 | 0.0 | | 32.6 | 18.5 | 90 | 46 | 2.75 | 26.20 |
| 14/01/2026 | 6.4 | 0.0 | | 31.4 | 19.5 | 96 | 43 | 2.73 | 29.18 |
| 15/01/2026 | 5.1 | 0.2 | | 30.6 | 19.6 | 93 | 51 | 2.40 | 22.23 |
| 16/01/2026 | 6.7 | 1.2 | | 35.4 | 19.8 | 97 | 47 | 2.52 | 29.08 |
| 17/01/2026 | 4.5 | 16.2 | | 31.0 | 20.6 | 96 | 60 | 2.57 | 19.09 |
| 18/01/2026 | 4.0 | 8.6 | | 28.1 | 21.7 | 96 | 61 | 3.12 | 16.70 |
| 19/01/2026 | 4.2 | 25.8 | | 27.2 | 19.3 | 97 | 53 | 3.79 | 16.84 |
| 20/01/2026 | 4.6 | 1.0 | | 26.9 | 16.3 | 95 | 53 | 3.36 | 21.03 |
| 21/01/2026 | 5.7 | | | 29.3 | 17.6 | 92 | 45 | 2.14 | 27.57 |
| 22/01/2026 | 7.5 | 0.0 | | 36.9 | 15.3 | 97 | 25 | 2.85 | 28.96 |
| 23/01/2026 | 2.4 | 0.0 | | 25.2 | 21.3 | 95 | 63 | 2.48 | 8.04 |
| 24/01/2026 | 3.7 | 0.6 | | 29.6 | 19.2 | 96 | 61 | 1.96 | 16.05 |
| 25/01/2026 | 6.1 | 0.0 | | 35.0 | 20.9 | 94 | 49 | 2.07 | 26.32 |
| 26/01/2026 | 6.9 | 0.0 | | 35.4 | 23.1 | 95 | 46 | 3.17 | 27.62 |
| 27/01/2026 | 4.9 | 0.0 | | 29.5 | 22.3 | 87 | 53 | 2.58 | 20.88 |
| 28/01/2026 | 6.1 | 0.0 | | 30.6 | 20.6 | 83 | 45 | 2.06 | 29.08 |
| 29/01/2026 | 6.1 | 0.0 | | 29.8 | 19.3 | 86 | 43 | 2.79 | 27.74 |
| 30/01/2026 | 5.2 | 0.0 | | 30.3 | 18.6 | 96 | 52 | 2.20 | 24.57 |
| Totals: | 163.4 | 68.8 | | | | | | | |
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