Evapotranspiration Calculations
Sydney (Observatory Hill) - January 2025 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) |
|---|---|---|---|---|---|---|---|---|---|
| 01/01/2025 | 5.4 | 0.0 | 29.4 | 21.1 | 90 | 52 | 0.00 | 28.68 | |
| 02/01/2025 | 2.0 | 0.0 | 23.9 | 20.9 | 85 | 57 | 0.00 | 9.32 | |
| 03/01/2025 | 4.1 | 1.0 | 27.1 | 18.3 | 92 | 55 | 0.00 | 21.99 | |
| 04/01/2025 | 5.5 | 0.0 | 29.2 | 20.0 | 79 | 45 | 0.00 | 30.71 | |
| 05/01/2025 | 5.2 | 0.0 | 31.2 | 20.2 | 83 | 48 | 0.00 | 27.65 | |
| 06/01/2025 | 5.6 | 0.0 | 31.7 | 21.4 | 95 | 50 | 0.00 | 28.88 | |
| 07/01/2025 | 1.5 | 13.0 | 23.0 | 19.9 | 96 | 68 | 0.00 | 5.91 | |
| 08/01/2025 | 1.4 | 2.0 | 20.3 | 18.5 | 97 | 71 | 0.00 | 5.73 | |
| 09/01/2025 | 3.1 | 45.0 | 24.4 | 17.2 | 97 | 76 | 0.00 | 16.32 | |
| 10/01/2025 | 3.4 | 1.8 | 27.2 | 19.9 | 97 | 64 | 0.00 | 17.24 | |
| 11/01/2025 | 4.5 | 5.2 | 28.3 | 19.8 | 94 | 65 | 0.00 | 23.64 | |
| 12/01/2025 | 5.1 | 0.0 | 28.6 | 20.5 | 91 | 61 | 0.00 | 27.00 | |
| 13/01/2025 | 4.9 | 0.0 | 29.3 | 21.0 | 92 | 59 | 0.00 | 25.80 | |
| 14/01/2025 | 4.5 | 0.0 | 29.6 | 22.4 | 94 | 62 | 0.00 | 22.56 | |
| 15/01/2025 | 4.8 | 0.0 | 29.9 | 22.0 | 97 | 63 | 0.00 | 24.22 | |
| 16/01/2025 | 1.5 | 48.4 | 21.6 | 18.5 | 96 | 57 | 0.00 | 6.55 | |
| 17/01/2025 | 6.6 | 20.8 | 18.1 | 6.26 | |||||
| 18/01/2025 | 17.0 | 24.3 | 17.6 | 13.94 | |||||
| 19/01/2025 | 3.2 | 9.0 | 24.6 | 17.8 | 77 | 50 | 0.00 | 17.84 | |
| 20/01/2025 | 4.9 | 0.0 | 25.5 | 15.0 | 88 | 48 | 0.00 | 29.69 | |
| Totals: | 70.6 | 149.0 |
