Evapotranspiration Calculations
Penrith Lakes - 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 | 2.6 | 0.2 | | 21.4 | 17.5 | 86 | 49 | 2.80 | 6.88 |
| 02/01/2026 | 2.6 | 0.0 | | 23.1 | 17.5 | 86 | 52 | 1.79 | 8.96 |
| 03/01/2026 | 6.0 | 0.2 | | 31.3 | 16.6 | 95 | 44 | 2.37 | 27.48 |
| 04/01/2026 | 5.7 | 0.2 | | 34.4 | 18.1 | 95 | 39 | 2.13 | 22.75 |
| 05/01/2026 | 4.8 | 11.2 | | 31.3 | 16.3 | 95 | 45 | 1.79 | 21.10 |
| 06/01/2026 | 6.0 | 2.8 | | 33.2 | 18.3 | 96 | 38 | 1.58 | 27.68 |
| 07/01/2026 | 7.5 | 0.2 | | 38.4 | 19.0 | 94 | 22 | 1.77 | 31.60 |
| 08/01/2026 | 7.7 | 0.0 | | 42.1 | 18.9 | 94 | 13 | 1.55 | 31.55 |
| 09/01/2026 | 8.4 | 0.0 | | 42.5 | 18.5 | 88 | 16 | 2.16 | 31.47 |
| 10/01/2026 | 9.7 | 0.0 | | 42.5 | 19.8 | 84 | 18 | 3.37 | 31.49 |
| 11/01/2026 | 1.6 | 0.0 | | 21.7 | 20.0 | 96 | 62 | 2.86 | 2.26 |
| 12/01/2026 | 1.9 | 8.0 | | 21.5 | 16.0 | 97 | 70 | 1.83 | 7.19 |
| 13/01/2026 | 5.5 | 6.4 | | 31.3 | 18.4 | 96 | 44 | 1.98 | 25.21 |
| 14/01/2026 | 3.5 | 0.0 | | 27.8 | 21.2 | 87 | 58 | 2.69 | 12.46 |
| 15/01/2026 | 3.0 | 0.6 | | 29.4 | 20.3 | 95 | 57 | 1.62 | 11.37 |
| 16/01/2026 | 4.6 | 3.0 | | 29.3 | 19.1 | 94 | 50 | 2.58 | 19.05 |
| 17/01/2026 | 2.9 | 1.8 | | 24.4 | 19.9 | 97 | 73 | 4.22 | 12.51 |
| 18/01/2026 | 2.2 | 105.0 | | 23.4 | 18.2 | 98 | 66 | 3.62 | 6.20 |
| 19/01/2026 | 3.4 | 4.8 | | 24.7 | 17.1 | 96 | 61 | 2.45 | 15.71 |
| 20/01/2026 | 4.6 | 4.2 | | 26.6 | 16.8 | 96 | 49 | 2.37 | 22.13 |
| 21/01/2026 | 5.6 | 0.2 | | 29.0 | 15.9 | 92 | 42 | 1.51 | 29.07 |
| 22/01/2026 | 4.6 | 0.0 | | 28.9 | 16.6 | 89 | 49 | 2.92 | 18.45 |
| 23/01/2026 | 4.2 | 0.0 | | 26.0 | 16.5 | 83 | 49 | 2.10 | 19.04 |
| 24/01/2026 | 6.2 | 0.0 | | 32.5 | 17.6 | 84 | 41 | 1.61 | 29.73 |
| 25/01/2026 | 6.7 | 0.0 | | 40.3 | 17.9 | 96 | 25 | 1.29 | 28.70 |
| 26/01/2026 | 4.4 | 0.0 | | 27.9 | 20.2 | 82 | 37 | 2.40 | 16.18 |
| 27/01/2026 | 6.1 | 0.0 | | 30.5 | 18.8 | 84 | 43 | 1.99 | 29.73 |
| 28/01/2026 | 6.3 | 0.0 | | 35.1 | 15.1 | 97 | 30 | 1.49 | 29.89 |
| 29/01/2026 | 5.9 | 0.0 | | 31.9 | 20.8 | 89 | 45 | 1.87 | 27.37 |
| 30/01/2026 | 6.5 | 0.0 | | 34.1 | 19.1 | 92 | 39 | 2.15 | 29.23 |
| Totals: | 150.7 | 148.8 | | | | | | | |
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