Climate averages 1991–2020
Koidu weather
in May.
A hot, very wet month: the 6th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Koidu: daytime highs average 29.4°C and nights cool to about 22.7°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 235 mm of rain on roughly 25 days, which makes May a very wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 31 min on an average May day.
The nearest other city in this atlas is Kenema (89 km away). In May its highs average 30.0°C, 0.6°C warmer than Koidu, with 221 mm of rain.
Among the 5 cities listed in Sierra Leone, Koidu ranks 4th of 5 for the warmest May highs and 4th of 5 for the driest May (rainfall, lowest first). The mean May high of those 5 cities is 29.8°C; Koidu is 0.4°C cooler than that mean.
From May to June, average highs fall by 1.4°C to 28.1°C, and monthly rainfall rises from 235 mm to 335 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Kenema in MaySierra Leone · 89 kmHigh 30.0°C · Low 23.1°C · 221 mm rain
- Gueckedou in MayGuinea · 93 kmHigh 29.5°C · Low 22.4°C · 226 mm rain
- Kissidougou in MayGuinea · 113 kmHigh 30.0°C · Low 22.1°C · 205 mm rain
- Bo in MaySierra Leone · 113 kmHigh 30.4°C · Low 23.2°C · 246 mm rain
- Makeni in MaySierra Leone · 121 kmHigh 31.3°C · Low 24.1°C · 179 mm rain
- Faranah in MayGuinea · 157 kmHigh 32.2°C · Low 23.4°C · 142 mm rain
- Mamou in MayGuinea · 228 kmHigh 30.8°C · Low 21.7°C · 165 mm rain
- Gbarnga in MayLiberia · 247 kmHigh 29.6°C · Low 22.8°C · 190 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.