Climate averages 1991–2020
Koidu weather
in August.
A warm, very wet month: the coolest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Koidu: daytime highs average 26.3°C and nights cool to about 21.1°C. By daytime temperature it is the coolest month of the year.
Expect about 419 mm of rain on roughly 30 days, which makes August a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 24 min on an average August day.
The nearest other city in this atlas is Kenema (89 km away). In August its highs average 27.1°C, 0.8°C warmer than Koidu, with 413 mm of rain.
Among the 5 cities listed in Sierra Leone, Koidu ranks 4th of 5 for the warmest August highs and 2nd of 5 for the driest August (rainfall, lowest first). The mean August high of those 5 cities is 26.8°C; Koidu is 0.5°C cooler than that mean.
From August to September, average highs rise by 1.0°C to 27.3°C, and monthly rainfall rises from 419 mm to 422 mm.
The annual picture
August 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
Koidu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.1°C20.4°C | 20.4°C | 11 | 2.4 | 11.712 h |
| February | 33.6°C21.9°C | 21.9°C | 14 | 2.9 | 11.812 h |
| March | 33.1°C23.1°C | 23.1°C | 63 | 10.3 | 12.112 h |
| April | 31.3°C23.2°C | 23.2°C | 105 | 15.7 | 12.312 h |
| May | 29.4°C22.7°C | 22.7°C | 235 | 25.4 | 12.513 h |
| June | 28.1°C21.9°C | 21.9°C | 335 | 28.0 | 12.613 h |
| July | 26.7°C21.2°C | 21.2°C | 369 | 29.3 | 12.613 h |
| August, selected | 26.3°C21.1°C | 21.1°C | 419 | 29.7 | 12.412 h |
| September | 27.3°C21.4°C | 21.4°C | 422 | 28.8 | 12.212 h |
| October | 28.2°C21.4°C | 21.4°C | 322 | 29.5 | 11.912 h |
| November | 28.5°C21.5°C | 21.5°C | 129 | 16.4 | 11.712 h |
| December | 29.9°C20.6°C | 20.6°C | 16 | 3.1 | 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
August in nearby cities
- Kenema in AugustSierra Leone · 89 kmHigh 27.1°C · Low 21.7°C · 413 mm rain
- Gueckedou in AugustGuinea · 93 kmHigh 26.4°C · Low 21.0°C · 330 mm rain
- Kissidougou in AugustGuinea · 113 kmHigh 26.6°C · Low 20.6°C · 285 mm rain
- Bo in AugustSierra Leone · 113 kmHigh 27.2°C · Low 21.8°C · 476 mm rain
- Makeni in AugustSierra Leone · 121 kmHigh 27.4°C · Low 22.2°C · 469 mm rain
- Faranah in AugustGuinea · 157 kmHigh 27.5°C · Low 21.4°C · 283 mm rain
- Mamou in AugustGuinea · 228 kmHigh 25.6°C · Low 19.9°C · 414 mm rain
- Gbarnga in AugustLiberia · 247 kmHigh 26.9°C · Low 21.6°C · 246 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 Koidu) is explained once on the Koidu year overview and on the Sources, method and limits page.