Evapotranspiration Calculations
Portland Airport - April 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) |
| 28/03/2026 | 1.7 | 2.0 | | 17.6 | 9.6 | 100 | 84 | 3.12 | 13.11 |
| 29/03/2026 | 2.8 | 0.2 | | 21.7 | 13.2 | 100 | 58 | 2.72 | 17.00 |
| 30/03/2026 | 3.7 | 0.0 | | 27.1 | 12.4 | 100 | 38 | 3.16 | 14.72 |
| 31/03/2026 | | 0.0 | | | 12.5 | 84 | 20 | 3.56 | 17.41 |
| 01/04/2026 | | | | 21.0 | | 100 | 37 | 4.86 | 13.99 |
| 02/04/2026 | 2.5 | 0.8 | | 20.4 | 10.5 | 100 | 62 | 4.73 | 13.58 |
| 03/04/2026 | 2.6 | 1.0 | | 17.2 | 8.0 | 94 | 43 | 3.47 | 13.15 |
| Totals: | 13.3 | 4.0 | | | | | | | |
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