Table 1 Monthly reference evapotranspiration (Eto)
Month | Min temp. (°C) | Max temp. (°C) | Relative humidity (%) | Wind speed (km/day) | Sun (h) | Rad (MJ/m2/day) | Eto (mm/day) |
|---|---|---|---|---|---|---|---|
January | 3.6 | 20.8 | 80 | 72 | 10.1 | 22.2 | 3.39 |
February | 5.2 | 21.9 | 70 | 73 | 9.6 | 22.8 | 3.75 |
March | 8.6 | 22.1 | 83 | 85 | 8.4 | 22.2 | 3.83 |
April | 7.5 | 22.2 | 92 | 70 | 8.6 | 22.8 | 3.92 |
May | 7.2 | 22.0 | 85 | 74 | 7.3 | 20.3 | 3.58 |
June | 7.9 | 22.0 | 84 | 70 | 6.6 | 18.9 | 3.41 |
July | 8.7 | 17.6 | 95 | 73 | 4.5 | 15.9 | 2.70 |
August | 8.5 | 17.4 | 95 | 58 | 4.5 | 16.2 | 2.74 |
September | 6.3 | 19.1 | 95 | 59 | 5.7 | 18.0 | 3.03 |
October | 4.2 | 18.8 | 92 | 55 | 8.6 | 21.6 | 3.37 |
November | 3.7 | 19.0 | 88 | 81 | 7.3 | 18.4 | 2.90 |
December | 1.3 | 19.1 | 83 | 80 | 8.2 | 19.0 | 2.88 |
Average | 6.1 | 20.2 | 87 | 71 | 7.5 | 19.9 | 3.29 |