Evapotranspiration Calculations
Portland Airport - May 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) |
| 01/05/2025 | 1.7 | 0.0 | | 16.8 | 9.8 | 85 | 49 | 2.16 | 7.82 |
| 02/05/2025 | 2.1 | 0.0 | | 19.2 | 4.5 | 100 | 41 | 2.69 | 12.10 |
| 03/05/2025 | 3.1 | 0.0 | | 21.8 | 6.6 | 99 | 26 | 3.86 | 11.77 |
| 04/05/2025 | 4.8 | 0.2 | | 24.7 | 8.9 | 56 | 28 | 5.68 | 10.40 |
| 05/05/2025 | 5.5 | 0.0 | | 26.0 | 12.8 | 85 | 24 | 7.96 | 11.61 |
| 06/05/2025 | 2.2 | 0.0 | | 20.2 | 14.7 | 99 | 65 | 7.75 | 8.70 |
| 07/05/2025 | 2.5 | 5.4 | | 16.4 | 12.7 | 100 | 47 | 8.55 | 8.67 |
| 08/05/2025 | 2.0 | 0.8 | | 16.8 | 10.4 | 94 | 53 | 4.77 | 7.90 |
| 09/05/2025 | 1.6 | 0.0 | | 15.9 | 11.2 | 82 | 61 | 2.92 | 5.65 |
| 10/05/2025 | 1.6 | 0.0 | | 18.6 | 6.5 | 100 | 52 | 2.24 | 11.12 |
| 11/05/2025 | 2.4 | 0.2 | | 21.4 | 7.0 | 100 | 41 | 3.55 | 10.28 |
| Totals: | 29.5 | 6.6 | | | | | | | |
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