Brazzaville
Congo
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 37 | 37 | 37 | 37 | 37 | 38 | 37 | 41 | 37 | 32 | 33 | 33 | 41 |
| Average high, °C | 29 | 29 | 28 | 28 | 29 | 30 | 30 | 30 | 30 | 27 | 26 | 27 | 29 |
| Average temperature, °C | 24 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 23 | 21 | 22 | 24 |
| Average low, °C | 21 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 20 | 19 | 20 | 22 |
| Record low, °C | 17 | 17 | 14 | 13 | 18 | 18 | 16 | 18 | 17 | 13 | 12 | 11 | 11 |
| Rain, days | 2 | 7 | 13 | 10 | 10 | 10 | 9 | 9 | 9 | 0 | 0 | 0 | 79 |
| Fog, days | 1 | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 4 | 13 | 10 | 4 | 42 |
| Thunderstorms, days | 3 | 9 | 14 | 13 | 11 | 10 | 14 | 14 | 12 | 1 | 0 | 1 | 102 |
| Average precipitation, mm. | 25 | 129 | 252 | 180 | 143 | 139 | 177 | 216 | 129 | 5 | 1 | 2 | 1396 |
| Relative humidity, % | 72 | 76 | 80 | 82 | 81 | 79 | 79 | 81 | 82 | 81 | 77 | 72 | 78 |
| Relative humidity morning, % | 84 | 87 | 91 | 92 | 93 | 92 | 92 | 93 | 92 | 92 | 90 | 87 | 90 |
| Relative humidity evening, % | 52 | 58 | 63 | 65 | 63 | 60 | 59 | 60 | 61 | 61 | 59 | 55 | 60 |
| Wind speed, km/h | 5 | 4 | 4 | 3 | 3 | 4 | 3 | 3 | 3 | 4 | 4 | 5 | 4 |
| Day Length, часов | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 |
| Dew point, °C | 18 | 20 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 19 | 17 | 17 | 242 |
| Growing degree-day, °C | 417 | 459 | 441 | 453 | 459 | 432 | 484 | 462 | 465 | 378 | 350 | 381 | 5181 |
| Solar radiation, global, Mj/m2 | 16 | 15 | 15 | 16 | 17 | 18 | 18 | 17 | 16 | 16 | 17 | 17 | 16 |