Evapotranspiration Calculations
Sydney (Observatory Hill) - September 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) |
01/09/2025 | 1.9 | 0.2 | | 20.7 | 9.3 | 82 | 37 | 0.00 | 17.55 |
02/09/2025 | 2.0 | 32.8 | | 20.2 | 10.9 | 96 | 52 | 0.00 | 16.36 |
03/09/2025 | 2.0 | 0.0 | | 22.5 | 10.4 | 89 | 29 | 0.00 | 17.91 |
04/09/2025 | 1.7 | 0.2 | | 23.6 | 14.1 | 66 | 24 | 0.00 | 12.66 |
05/09/2025 | 1.8 | 0.0 | | 19.8 | 11.2 | 74 | 50 | 0.00 | 13.89 |
06/09/2025 | 2.0 | 0.0 | | 21.1 | 11.0 | 80 | 47 | 0.00 | 16.55 |
07/09/2025 | 2.4 | 0.0 | | 22.3 | 11.5 | 93 | 52 | 0.00 | 18.48 |
08/09/2025 | 2.4 | 0.0 | | 29.0 | 16.2 | 54 | 32 | 0.00 | 18.52 |
09/09/2025 | 2.1 | 2.2 | | 26.1 | 16.1 | 89 | 43 | 0.00 | 14.17 |
10/09/2025 | 1.2 | 6.8 | | 17.1 | 16.1 | 97 | 76 | 0.00 | 6.26 |
11/09/2025 | 1.5 | 122.0 | | 17.5 | 9.7 | 98 | 53 | 0.00 | 9.96 |
12/09/2025 | 2.3 | 8.4 | | 21.1 | 9.6 | 91 | 35 | 0.00 | 19.34 |
13/09/2025 | 2.4 | 0.0 | | 21.3 | 10.5 | 84 | 51 | 0.00 | 19.00 |
14/09/2025 | 2.5 | 0.0 | | 23.9 | 11.1 | 95 | 39 | 0.00 | 19.30 |
15/09/2025 | 2.5 | 0.0 | | 27.9 | 11.1 | 83 | 23 | 0.00 | 19.92 |
16/09/2025 | 2.2 | 0.0 | | 27.0 | 18.7 | 54 | 39 | 0.00 | 14.19 |
17/09/2025 | 2.8 | 0.0 | | 27.2 | 18.3 | 78 | 26 | 0.00 | 20.02 |
18/09/2025 | 2.6 | 0.2 | | 21.2 | 11.3 | 85 | 45 | 0.00 | 20.43 |
19/09/2025 | 2.6 | 0.0 | | 24.9 | 11.4 | 92 | 27 | 0.00 | 19.46 |
20/09/2025 | 2.8 | 3.6 | | 22.5 | 15.9 | 87 | 25 | 0.00 | 20.54 |
Totals: | 43.7 | 176.4 | | | | | | | |
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