Evapotranspiration Calculations
Williamtown RAAF - 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 | 3.5 | 0.0 | | 24.7 | 14.8 | 93 | 63 | 4.60 | 14.21 |
| 02/01/2026 | 4.0 | 0.8 | | 24.5 | 17.0 | 94 | 56 | 2.80 | 18.59 |
| 03/01/2026 | 5.8 | 0.0 | | 27.5 | 17.2 | 90 | 53 | 4.39 | 27.28 |
| 04/01/2026 | 6.5 | 0.6 | | 34.2 | 19.9 | 93 | 35 | 4.05 | 20.61 |
| 05/01/2026 | 5.5 | 6.4 | | 26.7 | 16.3 | 95 | 63 | 3.09 | 30.63 |
| 06/01/2026 | 5.9 | 0.0 | | 28.0 | 19.8 | 93 | 59 | 3.00 | 30.32 |
| 07/01/2026 | 6.8 | 0.0 | | 32.9 | 18.2 | 96 | 39 | 2.43 | 30.79 |
| 08/01/2026 | 8.1 | 0.0 | | 36.3 | 17.0 | 89 | 29 | 3.23 | 31.52 |
| 09/01/2026 | 8.4 | 0.0 | | 37.3 | 16.8 | 88 | 31 | 3.61 | 31.46 |
| 10/01/2026 | 10.7 | 0.0 | | 40.5 | 20.0 | 86 | 18 | 5.06 | 31.36 |
| 11/01/2026 | 2.6 | 0.0 | | 23.6 | 21.9 | 97 | 65 | 6.82 | 6.04 |
| 12/01/2026 | 3.0 | 24.8 | | 24.6 | 16.7 | 97 | 71 | 2.93 | 13.85 |
| 13/01/2026 | 5.6 | 3.4 | | 28.0 | 20.0 | 95 | 60 | 3.01 | 28.44 |
| 14/01/2026 | 4.0 | 0.0 | | 27.0 | 20.5 | 86 | 59 | 3.82 | 14.87 |
| 15/01/2026 | 5.1 | 2.0 | | 29.1 | 20.6 | 94 | 53 | 4.93 | 19.74 |
| 16/01/2026 | 3.6 | 35.6 | | 25.2 | 19.7 | 93 | 72 | 4.86 | 16.40 |
| 17/01/2026 | 5.7 | 0.0 | | 27.7 | 18.2 | 94 | 58 | 4.38 | 28.22 |
| 18/01/2026 | 3.6 | 14.0 | | 24.0 | 18.0 | 96 | 69 | 5.70 | 16.54 |
| 19/01/2026 | 5.1 | 5.8 | | 25.8 | 18.1 | 95 | 51 | 3.14 | 25.18 |
| 20/01/2026 | 5.3 | 0.2 | | 25.9 | 16.7 | 94 | 50 | 3.25 | 27.29 |
| 21/01/2026 | 5.6 | 0.0 | | 25.5 | 16.0 | 94 | 49 | 3.14 | 29.80 |
| 22/01/2026 | 5.6 | 0.0 | | 27.3 | 16.2 | 90 | 56 | 5.51 | 26.62 |
| 23/01/2026 | 4.4 | 0.0 | | 24.9 | 20.0 | 80 | 50 | 3.84 | 16.64 |
| 24/01/2026 | 5.8 | 0.0 | | 29.2 | 14.8 | 91 | 54 | 2.51 | 30.04 |
| 25/01/2026 | 6.7 | 0.0 | | 37.3 | 18.7 | 97 | 30 | 1.98 | 27.51 |
| 26/01/2026 | 5.7 | 0.0 | | 27.2 | 21.5 | 85 | 58 | 7.10 | 23.63 |
| 27/01/2026 | 5.3 | 0.0 | | 26.2 | 17.2 | 86 | 53 | 3.00 | 26.76 |
| 28/01/2026 | 6.2 | 0.0 | | 30.4 | 14.1 | 91 | 47 | 3.24 | 29.84 |
| 29/01/2026 | 5.7 | 0.0 | | 27.8 | 18.8 | 90 | 54 | 3.05 | 28.59 |
| 30/01/2026 | 5.6 | 0.0 | | 28.9 | 18.1 | 93 | 54 | 3.17 | 27.52 |
| Totals: | 165.4 | 93.6 | | | | | | | |
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