The best time to visit Sierra Leone is Dec–Feb. Month by month, the verdicts rate Nov–Feb as comfortable on both daytime heat and rainfall — 4 months in all.
Summer monsoon
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 29.6 | 85 | 1% | Go |
| February | 30.6 | 87 | 2% | Go |
| March | 31.5 | 89 | 2% | Fair |
| April | 31.5 | 89 | 17% | Fair |
| May | 30.4 | 87 | 50% | Fair |
| June | 28.6 | 83 | 85% | Too wet |
| July | 27.3 | 81 | 93% | Too wet |
| August | 26.9 | 80 | 95% | Too wet |
| September | 27.3 | 81 | 91% | Too wet |
| October | 28.0 | 82 | 75% | Too wet |
| November | 28.7 | 84 | 27% | Go |
| December | 29.1 | 84 | 1% | Go |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
January is the driest month, with rain on 1% of days and daytime highs near 29.6°C (85°F). August is the wettest, at 95%. The warmest month is March at 31.5°C (89°F); the coolest is August at 26.9°C (80°F). The record rules out too wet in Jun–Oct.