Freetown
Sierra Leone
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 31 | 32 | 32 | 33 | 33 | 37 | 37 | 37 | 34 | 31 | 31 | 31 | 37 |
| Average high, °C | 30 | 30 | 31 | 31 | 32 | 34 | 34 | 34 | 32 | 30 | 28 | 28 | 31 |
| Average temperature, °C | 26 | 27 | 27 | 25 | 26 | 28 | 29 | 29 | 28 | 26 | 25 | 25 | 27 |
| Average low, °C | 21 | 21 | 21 | 18 | 18 | 20 | 21 | 22 | 22 | 22 | 21 | 21 | 21 |
| Record low, °C | 21 | 21 | 21 | 23 | 24 | 17 | 21 | 21 | 22 | 18 | 21 | 21 | 17 |
| Fog, days | 1 | 2 | 4 | 10 | 0 | 6 | 1 | 0 | 1 | 0 | 0 | 0 | 25 |
| Thunderstorms, days | 11 | 16 | 6 | 0 | 0 | 0 | 1 | 2 | 16 | 6 | 13 | 3 | 74 |
| Average precipitation, mm. | 484 | 360 | 161 | 19 | 3 | 9 | 26 | 94 | 213 | 350 | 461 | 598 | 2779 |
| Relative humidity, % | 83 | 80 | 76 | 65 | 57 | 59 | 59 | 65 | 73 | 80 | 85 | 86 | 72 |
| Relative humidity evening, % | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 57 | 0 | 0 | 0 | 0 | 5 |
| Wind speed, km/h | 12 | 11 | 14 | 8 | 12 | 15 | 15 | 15 | 14 | 13 | 13 | 14 | 13 |
| Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 |
| Dew point, °C | 23 | 23 | 22 | 18 | 16 | 19 | 20 | 21 | 22 | 23 | 23 | 23 | 253 |
| Growing degree-day, °C | 477 | 512 | 495 | 477 | 481 | 506 | 580 | 558 | 543 | 492 | 477 | 474 | 6071 |
| Solar radiation, global, Mj/m2 | 17 | 18 | 18 | 20 | 20 | 22 | 23 | 23 | 20 | 18 | 16 | 16 | 19 |