Climate averages 1991–2020
Bolenge weather
in September.
A hot, very wet month: the coolest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Bolenge: daytime highs average 28.8°C and nights cool to about 22.4°C. By daytime temperature it is the coolest month of the year.
Expect about 189 mm of rain on roughly 26 days, which makes September a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average September day.
The nearest other city in this atlas is Mbandaka (7 km away). In September its highs average 28.8°C, about as warm as Bolenge, with 189 mm of rain.
Among the 60 cities listed in the Democratic Republic of the Congo, Bolenge ranks joint 42nd of 60 for the warmest September highs and joint 55th of 60 for the driest September (rainfall, lowest first). The mean September high of those 60 cities is 29.6°C; Bolenge is 0.8°C cooler than that mean.
From September to October, average highs rise by 0.1°C to 28.9°C, and monthly rainfall rises from 189 mm to 205 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
Bolenge climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.1°C23.2°C | 23.2°C | 89 | 15.2 | 12.112 h |
| February | 31.2°C23.5°C | 23.5°C | 120 | 16.1 | 12.112 h |
| March | 30.7°C23.6°C | 23.6°C | 156 | 21.5 | 12.112 h |
| April | 30.1°C23.5°C | 23.5°C | 159 | 23.1 | 12.112 h |
| May | 29.9°C23.4°C | 23.4°C | 128 | 22.3 | 12.112 h |
| June | 29.6°C23.0°C | 23.0°C | 92 | 17.4 | 12.112 h |
| July | 29.4°C22.6°C | 22.6°C | 94 | 18.1 | 12.112 h |
| August | 29.0°C22.5°C | 22.5°C | 155 | 23.5 | 12.112 h |
| September, selected | 28.8°C22.4°C | 22.4°C | 189 | 26.1 | 12.112 h |
| October | 28.9°C22.5°C | 22.5°C | 205 | 26.7 | 12.112 h |
| November | 29.4°C22.7°C | 22.7°C | 182 | 24.9 | 12.112 h |
| December | 30.2°C22.9°C | 22.9°C | 120 | 20.0 | 12.112 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
- Mbandaka in SeptemberDemocratic Republic of the Congo · 7 kmHigh 28.8°C · Low 22.5°C · 189 mm rain
- Binga in SeptemberDemocratic Republic of the Congo · 366 kmHigh 28.9°C · Low 21.8°C · 159 mm rain
- Bandundu Province in SeptemberDemocratic Republic of the Congo · 380 kmHigh 31.6°C · Low 22.9°C · 99 mm rain
- Gemena in SeptemberDemocratic Republic of the Congo · 401 kmHigh 28.8°C · Low 21.6°C · 159 mm rain
- Lisala in SeptemberDemocratic Republic of the Congo · 438 kmHigh 28.8°C · Low 22.1°C · 161 mm rain
- Bimbo in SeptemberCentral African Republic · 474 kmHigh 29.1°C · Low 22.0°C · 158 mm rain
- Bangui in SeptemberCentral African Republic · 486 kmHigh 29.4°C · Low 22.5°C · 158 mm rain
- Bégoua in SeptemberCentral African Republic · 497 kmHigh 29.1°C · Low 22.0°C · 198 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 Bolenge) is explained once on the Bolenge year overview and on the Sources, method and limits page.
Mbandaka lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.