Climate averages 1991–2020
Bujumbura weather
in September.
A warm, very dry month: the warmest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Bujumbura: daytime highs average 27.7°C and nights cool to about 23.2°C. By daytime temperature it is the warmest month of the year.
Expect about 6.8 mm of rain on roughly 1 day, which makes September a very dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average September day.
The nearest other city in this atlas is Uvira (25 km away). In September its highs average 28.1°C, about as warm as Bujumbura, with 6.8 mm of rain.
Among the 2 cities listed in Burundi, Bujumbura ranks 1st of 2 for the warmest September highs and 1st of 2 for the driest September (rainfall, lowest first). The mean September high of those 2 cities is 26.6°C; Bujumbura is 1.1°C warmer than that mean.
From September to October, average highs fall by 0.4°C to 27.3°C, and monthly rainfall rises from 6.8 mm to 28 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bujumbura climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.0°C22.2°C | 22.2°C | 147 | 12.0 | 12.312 h |
| February | 27.5°C22.6°C | 22.6°C | 92 | 8.6 | 12.212 h |
| March | 27.3°C22.8°C | 22.8°C | 82 | 7.9 | 12.112 h |
| April | 26.6°C22.5°C | 22.5°C | 115 | 8.8 | 12.012 h |
| May | 26.7°C22.5°C | 22.5°C | 53 | 5.2 | 12.012 h |
| June | 26.5°C22.4°C | 22.4°C | 13 | 2.1 | 11.912 h |
| July | 26.2°C22.3°C | 22.3°C | 3.8 | 0.8 | 11.912 h |
| August | 26.9°C22.7°C | 22.7°C | 3.5 | 1.1 | 12.012 h |
| September, selected | 27.7°C23.2°C | 23.2°C | 6.8 | 1.2 | 12.112 h |
| October | 27.3°C22.9°C | 22.9°C | 28 | 4.4 | 12.212 h |
| November | 26.6°C22.3°C | 22.3°C | 60 | 6.7 | 12.312 h |
| December | 26.5°C22.1°C | 22.1°C | 156 | 10.6 | 12.312 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Uvira in SeptemberDemocratic Republic of the Congo · 25 kmHigh 28.1°C · Low 24.0°C · 6.8 mm rain
- Gitega in SeptemberBurundi · 63 kmHigh 25.5°C · Low 16.1°C · 16 mm rain
- Bukavu in SeptemberDemocratic Republic of the Congo · 115 kmHigh 25.9°C · Low 16.5°C · 85 mm rain
- Gitarama in SeptemberRwanda · 152 kmHigh 24.2°C · Low 12.9°C · 54 mm rain
- Muhanga in SeptemberRwanda · 156 kmHigh 24.2°C · Low 13.3°C · 54 mm rain
- Kasulu in SeptemberTanzania · 156 kmHigh 30.0°C · Low 17.8°C · 36 mm rain
- Kigoma in SeptemberTanzania · 169 kmHigh 27.9°C · Low 24.2°C · 24 mm rain
- Kigali in SeptemberRwanda · 177 kmHigh 25.7°C · Low 15.0°C · 54 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bujumbura) is explained once on the Bujumbura year overview and on the Sources, method and limits page.
Uvira lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.