Climate averages 1991–2020
Makeni weather
in September.
A hot, very wet month: the 10th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Makeni: daytime highs average 28.4°C and nights cool to about 22.4°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 413 mm of rain on roughly 29 days, which makes September a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average September day.
The nearest other city in this atlas is Bo (108 km away). In September its highs average 28.1°C, about as warm as Makeni, with 433 mm of rain.
Among the 5 cities listed in Sierra Leone, Makeni ranks 1st of 5 for the warmest September highs and 2nd of 5 for the driest September (rainfall, lowest first). The mean September high of those 5 cities is 27.6°C; Makeni is 0.8°C warmer than that mean.
From September to October, average highs rise by 0.9°C to 29.3°C, and monthly rainfall falls from 413 mm to 294 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
Makeni climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 34.3°C21.9°C | 21.9°C | 7.4 | 2.0 | 11.712 h |
| February | 35.7°C23.2°C | 23.2°C | 6.1 | 1.4 | 11.812 h |
| March | 35.7°C24.3°C | 24.3°C | 24 | 5.7 | 12.112 h |
| April | 34.3°C24.7°C | 24.7°C | 51 | 10.2 | 12.312 h |
| May | 31.3°C24.1°C | 24.1°C | 179 | 22.9 | 12.513 h |
| June | 29.3°C23.0°C | 23.0°C | 306 | 28.2 | 12.613 h |
| July | 27.9°C22.4°C | 22.4°C | 405 | 29.5 | 12.613 h |
| August | 27.4°C22.2°C | 22.2°C | 469 | 29.9 | 12.412 h |
| September, selected | 28.4°C22.4°C | 22.4°C | 413 | 29.0 | 12.212 h |
| October | 29.3°C22.5°C | 22.5°C | 294 | 29.7 | 11.912 h |
| November | 30.1°C22.8°C | 22.8°C | 101 | 16.2 | 11.712 h |
| December | 32.0°C22.1°C | 22.1°C | 13 | 3.0 | 11.612 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
- Bo in SeptemberSierra Leone · 108 kmHigh 28.1°C · Low 21.9°C · 433 mm rain
- Koidu in SeptemberSierra Leone · 121 kmHigh 27.3°C · Low 21.4°C · 422 mm rain
- Freetown in SeptemberSierra Leone · 138 kmHigh 26.4°C · Low 23.9°C · 479 mm rain
- Kenema in SeptemberSierra Leone · 146 kmHigh 27.9°C · Low 22.0°C · 395 mm rain
- Kindia in SeptemberGuinea · 158 kmHigh 27.8°C · Low 21.4°C · 326 mm rain
- Mamou in SeptemberGuinea · 166 kmHigh 26.8°C · Low 20.0°C · 334 mm rain
- Manéah in SeptemberGuinea · 178 kmHigh 28.0°C · Low 23.0°C · 465 mm rain
- Dubréka in SeptemberGuinea · 191 kmHigh 28.4°C · Low 23.2°C · 465 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 Makeni) is explained once on the Makeni year overview and on the Sources, method and limits page.