Windhoek
Namibia
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 31 | 28 | 28 | 32 | 31 | 30 | 29 | 36 | 37 | 30 | 30 | 31 | 37 |
| Average high, °C | 16 | 16 | 18 | 19 | 20 | 20 | 20 | 18 | 18 | 17 | 16 | 16 | 18 |
| Average temperature, °C | 14 | 15 | 16 | 17 | 18 | 18 | 17 | 16 | 16 | 15 | 14 | 13 | 16 |
| Average low, °C | 11 | 12 | 13 | 15 | 15 | 15 | 15 | 13 | 13 | 12 | 11 | 11 | 13 |
| Record low, °C | 0 | 3 | 8 | 10 | 11 | 11 | 11 | 8 | 8 | 7 | 1 | 4 | 0 |
| Fog, days | 10 | 9 | 10 | 9 | 9 | 12 | 14 | 15 | 12 | 10 | 9 | 8 | 127 |
| Average precipitation, mm. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative humidity, % | 80 | 80 | 75 | 75 | 80 | 80 | 80 | 75 | 75 | 70 | 70 | 75 | 76 |
| Relative humidity morning, % | 87 | 89 | 90 | 91 | 90 | 91 | 90 | 89 | 84 | 77 | 80 | 85 | 87 |
| Relative humidity evening, % | 77 | 79 | 79 | 80 | 78 | 80 | 79 | 79 | 76 | 73 | 73 | 77 | 78 |
| Wind speed, km/h | 40 | 45 | 46 | 45 | 45 | 43 | 38 | 32 | 28 | 28 | 30 | 37 | 38 |
| Day Length, часов | 12 | 13 | 14 | 14 | 14 | 13 | 13 | 12 | 11 | 11 | 11 | 12 | 13 |
| Dew point, °C | 10 | 11 | 12 | 13 | 14 | 15 | 13 | 12 | 11 | 9 | 9 | 10 | 139 |
| Growing degree-day, °C | 117 | 138 | 175 | 224 | 250 | 220 | 233 | 192 | 181 | 158 | 129 | 129 | 2145 |
| Solar radiation, global, Mj/m2 | 20 | 23 | 26 | 28 | 27 | 25 | 21 | 18 | 15 | 14 | 14 | 17 | 21 |