Climate averages 1991–2020
Koidu weather
in July.
A warm, very wet month: the 11th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Koidu: daytime highs average 26.7°C and nights cool to about 21.2°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 369 mm of rain on roughly 29 days, which makes July a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 34 min on an average July day.
The nearest other city in this atlas is Kenema (89 km away). In July its highs average 27.4°C, 0.8°C warmer than Koidu, with 355 mm of rain.
Among the 5 cities listed in Sierra Leone, Koidu ranks 4th of 5 for the warmest July highs and 2nd of 5 for the driest July (rainfall, lowest first). The mean July high of those 5 cities is 27.2°C; Koidu is 0.5°C cooler than that mean.
From July to August, average highs fall by 0.4°C to 26.3°C, and monthly rainfall rises from 369 mm to 419 mm.
The annual picture
July 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, selected | 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
July in nearby cities
- Kenema in JulySierra Leone · 89 kmHigh 27.4°C · Low 21.8°C · 355 mm rain
- Gueckedou in JulyGuinea · 93 kmHigh 26.7°C · Low 21.1°C · 290 mm rain
- Kissidougou in JulyGuinea · 113 kmHigh 27.1°C · Low 20.7°C · 265 mm rain
- Bo in JulySierra Leone · 113 kmHigh 27.7°C · Low 21.9°C · 396 mm rain
- Makeni in JulySierra Leone · 121 kmHigh 27.9°C · Low 22.4°C · 405 mm rain
- Faranah in JulyGuinea · 157 kmHigh 28.1°C · Low 21.5°C · 247 mm rain
- Mamou in JulyGuinea · 228 kmHigh 26.2°C · Low 20.1°C · 349 mm rain
- Gbarnga in JulyLiberia · 247 kmHigh 27.2°C · Low 21.7°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.