Brazzaville in September
In September, Brazzaville averages 31°C (89°F) during the day and 22°C (71°F) at night, with frequent rain — about 18 days of the month see precipitation (35 mm total).
ShoulderConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
September is one of the wetter and less comfortable months in Brazzaville. If your dates are flexible, consider a different time of year.
How September compares to the rest of the year in Brazzaville
September is one of the warmest months in Brazzaville (1st of 12) and moderately rainy compared to the rest of the year (9th of 12). Daytime temperature runs 1°C above the annual average (30°C). September runs 1°C warmer than August (30°C) and stays flat into October.
September sunrise & sunset in Brazzaville
Times shown for Brazzaville local time (Africa/Brazzaville), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Brazzaville — September
Golden-hour and blue-hour windows for the 15th of September, in Brazzaville's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Brazzaville in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Brazzaville's popularity.
Crowds & pricing — September in Brazzaville
Brazzaville is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — September in Brazzaville
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Brazzaville in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 30°C / 85°F | 22°C / 72°F | 126 mm | 27 | — |
| February | 30°C / 87°F | 23°C / 73°F | 134 mm | 23 | — |
| March | 31°C / 87°F | 23°C / 73°F | 146 mm | 25 | — |
| April | 30°C / 87°F | 23°C / 73°F | 176 mm | 26 | — |
| May | 30°C / 86°F | 22°C / 72°F | 86 mm | 22 | — |
| June | 30°C / 86°F | 21°C / 69°F | 4 mm | 7 | — |
| July | 30°C / 86°F | 20°C / 67°F | 3 mm | 5 | — |
| August | 30°C / 87°F | 21°C / 69°F | 19 mm | 11 | — |
| September | 31°C / 89°F | 22°C / 71°F | 35 mm | 18 | — |
| October | 31°C / 88°F | 22°C / 72°F | 157 mm | 28 | — |
| November | 29°C / 85°F | 22°C / 72°F | 262 mm | 29 | — |
| December | 29°C / 85°F | 22°C / 72°F | 198 mm | 26 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Brazzaville in September →
Frequently asked questions
How hot is Brazzaville in September?
In September, Brazzaville averages a high of 31°C (89°F) and a low of 22°C (71°F) — generally hot.
Does it rain a lot in Brazzaville in September?
September is quite rainy in Brazzaville, with about 18 rainy days on average.
Is September a good time to visit Brazzaville?
September is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Brazzaville in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full September packing list for Brazzaville for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.