Climate averages 1991–2020
Bo weather
in January.
A hot, fairly dry month: the 3rd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Bo: daytime highs average 33.1°C and nights cool to about 21.9°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 17 mm of rain on roughly 4 days, which makes January a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 43 min on an average January day.
The nearest other city in this atlas is Kenema (61 km away). In January its highs average 32.5°C, 0.5°C cooler than Bo, with 15 mm of rain.
Among the 5 cities listed in Sierra Leone, Bo ranks 2nd of 5 for the warmest January highs and 5th of 5 for the driest January (rainfall, lowest first). The mean January high of those 5 cities is 31.9°C; Bo is 1.1°C warmer than that mean.
From January to February, average highs rise by 1.3°C to 34.3°C, and monthly rainfall rises from 17 mm to 20 mm.
The annual picture
January 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
Bo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 33.1°C21.9°C | 21.9°C | 17 | 3.7 | 11.712 h |
| February | 34.3°C22.9°C | 22.9°C | 20 | 4.7 | 11.912 h |
| March | 33.9°C23.6°C | 23.6°C | 56 | 11.4 | 12.112 h |
| April | 32.2°C23.6°C | 23.6°C | 120 | 18.0 | 12.312 h |
| May | 30.4°C23.2°C | 23.2°C | 246 | 27.0 | 12.512 h |
| June | 29.0°C22.4°C | 22.4°C | 333 | 28.9 | 12.613 h |
| July | 27.7°C21.9°C | 21.9°C | 396 | 29.1 | 12.513 h |
| August | 27.2°C21.8°C | 21.8°C | 476 | 29.4 | 12.412 h |
| September | 28.1°C21.9°C | 21.9°C | 433 | 29.3 | 12.212 h |
| October | 28.8°C22.1°C | 22.1°C | 245 | 29.2 | 12.012 h |
| November | 29.4°C22.3°C | 22.3°C | 103 | 19.3 | 11.812 h |
| December | 30.8°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
January in nearby cities
- Kenema in JanuarySierra Leone · 61 kmHigh 32.5°C · Low 21.9°C · 15 mm rain
- Makeni in JanuarySierra Leone · 108 kmHigh 34.3°C · Low 21.9°C · 7.4 mm rain
- Koidu in JanuarySierra Leone · 113 kmHigh 32.1°C · Low 20.4°C · 11 mm rain
- Freetown in JanuarySierra Leone · 175 kmHigh 27.7°C · Low 25.4°C · 9.9 mm rain
- Gueckedou in JanuaryGuinea · 189 kmHigh 32.5°C · Low 20.4°C · 15 mm rain
- Monrovia in JanuaryLiberia · 212 kmHigh 29.3°C · Low 23.8°C · 83 mm rain
- Kissidougou in JanuaryGuinea · 226 kmHigh 32.9°C · Low 19.4°C · 8.9 mm rain
- Faranah in JanuaryGuinea · 255 kmHigh 33.7°C · Low 20.0°C · 4.7 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 Bo) is explained once on the Bo year overview and on the Sources, method and limits page.