Evapotranspiration Calculations
Sydney (Observatory Hill) - October 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) |
| 01/10/2026 | 3.1 | 0.0 | | 30.1 | 14.6 | 79 | 18 | 0.00 | 21.89 |
| 02/10/2026 | 2.7 | 0.0 | | 25.3 | 16.7 | 93 | 45 | 0.00 | 16.45 |
| 03/10/2026 | 2.5 | 6.4 | | 22.7 | 17.8 | 95 | 67 | 0.00 | 14.69 |
| 04/10/2026 | 3.4 | 22.0 | | 25.6 | 13.4 | 95 | 33 | 0.00 | 23.37 |
| 05/10/2026 | 2.2 | 0.0 | | 23.7 | 15.3 | 89 | 66 | 0.00 | 12.64 |
| 06/10/2026 | 3.5 | 0.4 | | 28.1 | 16.8 | 89 | 34 | 0.00 | 22.12 |
| 07/10/2026 | 3.2 | 0.6 | | 19.4 | 15.3 | 88 | 45 | 0.00 | 21.78 |
| 08/10/2026 | 3.2 | 0.0 | | 21.7 | 12.7 | 79 | 44 | 0.00 | 22.22 |
| 09/10/2026 | 3.5 | 0.0 | | 22.2 | 11.7 | 88 | 57 | 0.00 | 24.33 |
| 10/10/2026 | 2.9 | 2.2 | | 30.4 | 14.9 | 93 | 30 | 0.00 | 17.02 |
| 11/10/2026 | 3.9 | 0.8 | | 25.7 | 16.2 | 93 | 52 | 0.00 | 24.47 |
| 12/10/2026 | 3.7 | 0.0 | | 34.8 | 17.1 | 95 | 19 | 0.00 | 22.13 |
| 13/10/2026 | 1.5 | 5.4 | | 19.9 | 18.6 | 95 | 74 | 0.00 | 6.73 |
| 14/10/2026 | | 83.4 | | | 13.2 | 94 | 46 | 0.00 | 17.17 |
| 15/10/2026 | | | | 17.6 | | 95 | 59 | 0.00 | 12.63 |
| 16/10/2026 | 3.3 | 13.8 | | 21.4 | 13.0 | 87 | 43 | 0.00 | 22.68 |
| 17/10/2026 | 3.6 | 0.0 | | 22.2 | 15.1 | 79 | 41 | 0.00 | 24.00 |
| 18/10/2026 | 3.7 | 0.0 | | 22.5 | 13.3 | 88 | 53 | 0.00 | 24.48 |
| 19/10/2026 | 3.9 | 0.0 | | 23.0 | 13.9 | 91 | 58 | 0.00 | 25.55 |
| 20/10/2026 | 4.1 | 0.0 | | 23.6 | 14.8 | 92 | 54 | 0.00 | 26.00 |
| 21/10/2026 | 4.1 | 0.0 | | 24.9 | 16.1 | 94 | 65 | 0.00 | 24.88 |
| 22/10/2026 | 3.4 | 0.0 | | 23.7 | 18.4 | 94 | 64 | 0.00 | 19.55 |
| 23/10/2026 | 3.8 | 10.4 | | 23.9 | 17.3 | 95 | 66 | 0.00 | 22.65 |
| 24/10/2026 | 4.3 | 0.2 | | 25.5 | 17.5 | 92 | 58 | 0.00 | 25.46 |
| 25/10/2026 | 4.2 | 0.0 | | 32.1 | 19.4 | 90 | 41 | 0.00 | 22.92 |
| 26/10/2026 | 3.4 | 1.2 | | 22.2 | 17.2 | 85 | 46 | 0.00 | 21.09 |
| Totals: | 81.1 | 146.8 | | | | | | | |
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