Brazzaville
Congo
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 35 | 36 | 36 | 32 | 42 | 40 | 38 | 37 | 40 | 32 | 31 | 32 | 42 |
| Average high, °C | 27 | 29 | 29 | 29 | 30 | 31 | 31 | 31 | 30 | 27 | 26 | 26 | 29 |
| Average temperature, °C | 24 | 25 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 23 | 22 | 22 | 25 |
| Average low, °C | 21 | 22 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 20 | 19 | 19 | 22 |
| Record low, °C | 13 | 15 | 21 | 20 | 17 | 21 | 19 | 20 | 18 | 12 | 13 | 16 | 12 |
| Rain, days | 0 | 2 | 7 | 7 | 5 | 8 | 6 | 7 | 4 | 0 | 0 | 0 | 46 |
| Fog, days | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 6 | 12 | 14 | 8 | 47 |
| Thunderstorms, days | 0 | 1 | 9 | 7 | 10 | 15 | 15 | 14 | 6 | 0 | 0 | 0 | 77 |
| Average precipitation, mm. | 13 | 66 | 199 | 132 | 178 | 198 | 210 | 154 | 61 | 1 | 0 | 1 | 1213 |
| Relative humidity, % | 80 | 80 | 82 | 82 | 81 | 81 | 79 | 81 | 84 | 79 | 79 | 79 | 80 |
| Relative humidity morning, % | 92 | 90 | 92 | 94 | 94 | 94 | 94 | 95 | 95 | 94 | 94 | 92 | 93 |
| Relative humidity evening, % | 77 | 76 | 78 | 78 | 76 | 74 | 74 | 76 | 78 | 76 | 74 | 75 | 76 |
| Wind speed, km/h | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 4 | 4 |
| Day Length, часов | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 |
| Dew point, °C | 20 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 19 | 18 | 18 | 257 |
| Growing degree-day, °C | 408 | 468 | 477 | 493 | 505 | 475 | 524 | 507 | 499 | 396 | 366 | 369 | 5487 |
| Solar radiation, global, Mj/m2 | 13 | 13 | 14 | 15 | 17 | 17 | 18 | 17 | 14 | 14 | 14 | 14 | 15 |