Brazzaville weather in September
September is one of the best months to visit Brazzaville: highs of 31°C (87°F) and about 57 mm (2.2 in) of rain on average. Nights average 21°C (70°F) and cloud cover 61% (NASA POWER, 2001–2025 averages). It is the 4th driest month of the year and the warmest. Compared with August, it is warmer and wetter; October brings highs of 30°C (85°F) and 175 mm (6.9 in) of rain.
Figures are long-term averages for Brazzaville, the largest city in Brazzaville. See below for other places.
Is September a good time to visit Brazzaville?
best month Weather score 78/100.
Yes. September is one of the best months for weather in Brazzaville.
Does it rain a lot in Brazzaville in September?
No, it is usually dry: about 57 mm (2.2 in) falls in an average September. It is the 4th driest month of the year.
How warm is Brazzaville in September?
Days average 31°C (87°F) and nights 21°C (70°F).
Brazzaville weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 29°C (84°F) | 22°C (71°F) | 166 mm | 80% | fair |
| February | 29°C (85°F) | 22°C (71°F) | 165 mm | 82% | fair |
| March | 29°C (85°F) | 22°C (71°F) | 206 mm | 81% | least pleasant |
| April | 29°C (84°F) | 22°C (71°F) | 207 mm | 82% | least pleasant |
| May | 29°C (84°F) | 21°C (71°F) | 149 mm | 70% | fair |
| June | 29°C (84°F) | 19°C (67°F) | 14 mm | 52% | best |
| July | 29°C (84°F) | 18°C (65°F) | 3 mm | 50% | best |
| August | 30°C (86°F) | 20°C (67°F) | 13 mm | 56% | best |
| September | 31°C (87°F) | 21°C (70°F) | 57 mm | 61% | best |
| October | 30°C (85°F) | 22°C (71°F) | 175 mm | 74% | fair |
| November | 28°C (83°F) | 22°C (71°F) | 278 mm | 81% | least pleasant |
| December | 28°C (83°F) | 21°C (71°F) | 249 mm | 84% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months