Brazzaville weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Fair
Best time to visit: June – August
What is the weather like in Brazzaville in September?
In September, Brazzaville is hot: daytime highs average 31 °C, and even at night it stays warm at around 22 °C. Expect around 5 hours of sunshine a day. Rain is rare: about 5 days bring 16 mm in total. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Brazzaville.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 65 | 57 | 34 |
| Day | 30° | 31° | 31° |
| Night | 20° | 22° | 23° |
| Sun | 5 h | 5 h | 5 h |
| Rain days | 1 | 5 | 18 |
More details for September
- Daylight
- 12 h 5 min05:52 – 17:57
- UV index
- 14 · extremeclear sky, noon (estimate)All months
- Muggy days
- 28 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 71 %on averageAll months
- Hot days
- 24 days30 °C or moreAll months
- Time zone
- UTC+1Africa/Brazzaville
How the score comes together
- Temperatureweight 50 %45 %
- Sunshineweight 20 %33 %
- Few rainy daysweight 30 %94 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
Brazzaville in September: quick answers
Is Brazzaville hot in September?
Yes. In September, Brazzaville is hot: daytime highs average 31 °C and nights stay around 22 °C. On about 24 days the thermometer climbs to 30 °C or more.
Does it rain much in Brazzaville in September?
Rain is rare: about 5 days bring 16 mm in total.
Brazzaville month by month
The whole year in BrazzavilleAll destinations: Republic of the CongoWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences