Climate averages 1991–2020
Gbarnga weather
in September.
A warm, very wet month: the 10th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Gbarnga: daytime highs average 27.7°C and nights cool to about 21.9°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 309 mm of rain on roughly 28 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average September day.
The nearest other city in this atlas is Nzérékoré (111 km away). In September its highs average 27.1°C, 0.6°C cooler than Gbarnga, with 268 mm of rain.
Among the 3 cities listed in Liberia, Gbarnga ranks 1st of 3 for the warmest September highs and 1st of 3 for the driest September (rainfall, lowest first). The mean September high of those 3 cities is 27.2°C; Gbarnga is 0.5°C warmer than that mean.
From September to October, average highs rise by 0.9°C to 28.6°C, and monthly rainfall falls from 309 mm to 179 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
Gbarnga climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.3°C22.2°C | 22.2°C | 23 | 5.5 | 11.812 h |
| February | 32.0°C23.1°C | 23.1°C | 45 | 9.0 | 11.912 h |
| March | 31.2°C23.3°C | 23.3°C | 97 | 17.6 | 12.112 h |
| April | 30.3°C23.1°C | 23.1°C | 133 | 21.3 | 12.312 h |
| May | 29.6°C22.8°C | 22.8°C | 190 | 25.8 | 12.412 h |
| June | 28.3°C22.2°C | 22.2°C | 220 | 26.8 | 12.513 h |
| July | 27.2°C21.7°C | 21.7°C | 190 | 25.6 | 12.512 h |
| August | 26.9°C21.6°C | 21.6°C | 246 | 26.3 | 12.312 h |
| September, selected | 27.7°C21.9°C | 21.9°C | 309 | 28.1 | 12.212 h |
| October | 28.6°C22.2°C | 22.2°C | 179 | 27.3 | 12.012 h |
| November | 28.9°C22.2°C | 22.2°C | 71 | 17.7 | 11.812 h |
| December | 29.7°C22.2°C | 22.2°C | 26 | 6.4 | 11.712 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
- Nzérékoré in SeptemberGuinea · 111 kmHigh 27.1°C · Low 20.8°C · 268 mm rain
- Buchanan in SeptemberLiberia · 140 kmHigh 26.7°C · Low 23.3°C · 403 mm rain
- Danané in SeptemberIvory Coast · 148 kmHigh 27.4°C · Low 21.4°C · 257 mm rain
- Monrovia in SeptemberLiberia · 166 kmHigh 27.1°C · Low 22.9°C · 530 mm rain
- Gueckedou in SeptemberGuinea · 189 kmHigh 27.5°C · Low 21.2°C · 351 mm rain
- Kenema in SeptemberSierra Leone · 213 kmHigh 27.9°C · Low 22.0°C · 395 mm rain
- Man in SeptemberIvory Coast · 217 kmHigh 28.0°C · Low 21.7°C · 241 mm rain
- Duekoué in SeptemberIvory Coast · 236 kmHigh 28.5°C · Low 22.3°C · 201 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 Gbarnga) is explained once on the Gbarnga year overview and on the Sources, method and limits page.