Evapotranspiration Calculations
Perth Airport Mo - 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 | 2.6 | 0.6 | 2.4 | 21.9 | 8.1 | 93 | 37 | 0.00 | 18.98 |
| 02/10/2026 | 3.1 | 0.0 | 3.6 | 24.8 | 8.5 | 83 | 27 | 0.00 | 23.51 |
| 03/10/2026 | 3.1 | 0.0 | 4.8 | 26.6 | 7.5 | 93 | 25 | 0.00 | 23.44 |
| 04/10/2026 | 3.2 | 0.0 | 6.8 | 23.5 | 7.8 | 96 | 41 | 0.00 | 23.51 |
| 05/10/2026 | 2.8 | 0.0 | 4.0 | 24.7 | 7.8 | 97 | 43 | 0.00 | 19.34 |
| 06/10/2026 | 3.3 | 0.0 | 4.2 | 29.1 | 8.6 | 96 | 30 | 0.00 | 22.95 |
| 07/10/2026 | 3.4 | 2.0 | 5.6 | 23.5 | 13.7 | 92 | 50 | 0.00 | 22.74 |
| 08/10/2026 | 2.3 | 15.6 | 6.4 | 19.5 | 15.1 | 95 | 45 | 0.00 | 14.24 |
| 09/10/2026 | 2.2 | 3.8 | 3.8 | 19.3 | 10.2 | 96 | 53 | 0.00 | 14.11 |
| 10/10/2026 | 3.0 | 1.2 | 2.6 | 21.3 | 11.6 | 97 | 45 | 0.00 | 20.20 |
| 11/10/2026 | 2.8 | 2.0 | 3.8 | 21.5 | 11.5 | 95 | 38 | 0.00 | 18.73 |
| 12/10/2026 | 3.3 | 0.0 | 5.0 | 23.5 | 9.9 | 64 | 25 | 0.00 | 25.26 |
| 13/10/2026 | 3.5 | 0.0 | 6.8 | 28.5 | 11.4 | 62 | 20 | 0.00 | 25.47 |
| 14/10/2026 | 3.1 | 0.0 | 8.0 | 31.0 | 15.7 | 89 | 21 | 0.00 | 18.70 |
| 15/10/2026 | 2.9 | 6.2 | 7.0 | 22.7 | 16.6 | 96 | 49 | 0.00 | 17.64 |
| 16/10/2026 | 3.7 | 0.2 | 1.6 | 24.5 | 8.9 | 96 | 40 | 0.00 | 25.95 |
| 17/10/2026 | 3.6 | 0.0 | 4.8 | 25.2 | 9.3 | 96 | 39 | 0.00 | 24.58 |
| 18/10/2026 | 3.4 | 1.4 | 4.6 | 22.1 | 14.7 | 95 | 34 | 0.00 | 22.74 |
| 19/10/2026 | 3.5 | 0.0 | 6.8 | 23.9 | 10.2 | 93 | 35 | 0.00 | 23.98 |
| 20/10/2026 | 3.6 | 0.0 | 5.2 | 23.6 | 6.5 | 95 | 42 | 0.00 | 26.38 |
| 21/10/2026 | 3.0 | 0.0 | 5.4 | 23.7 | 8.9 | 93 | 45 | 0.00 | 20.16 |
| 22/10/2026 | 3.5 | 0.8 | 6.0 | 22.7 | 15.4 | 91 | 39 | 0.00 | 22.44 |
| 23/10/2026 | 2.4 | 0.0 | 5.4 | 20.5 | 9.5 | 85 | 41 | 0.00 | 15.65 |
| 24/10/2026 | 2.7 | 1.6 | 4.4 | 20.1 | 3.8 | 91 | 28 | 0.00 | 20.86 |
| 25/10/2026 | 3.3 | 0.0 | 4.6 | 21.2 | 3.0 | 93 | 32 | 0.00 | 26.36 |
| 26/10/2026 | 3.3 | 6.8 | 5.0 | 23.8 | 10.1 | 96 | 27 | 0.00 | 22.55 |
| Totals: | 80.6 | 42.2 | 128.6 | | | | | | |
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