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Weather & Climate in Zimmi, Sierra Leone
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Zimmi has a warm climate with an average annual temperature of 79°F (26°C). Winters average 79°F in January while summers reach 77°F in July / relatively mild seasonal variation. The area gets 165 sunny days per year, below the national average of 205. Annual precipitation totals 125.6 inches (wetter than the 38-inch national average). The city sits at an elevation of 295 feet.
Temperature
79°F Jan (26°C)
77°F Jul (25°C)
| Annual Average | 79.3°F |
| 47% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 165 days/yr |
Geography
| Elevation | 295 ft (90 m) |
| Area | 1,894.5 sq mi (4,906.8 km²) |
| Population Density | 3/sq mi |
| Coordinates | 7.3136°N, 11.3082°W |
| Timezone | Africa/Freetown |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Nov 25, 1995 | 16 km SW of Tubmanburg, Liberia | M4.5 | 73 km | 10 km |
| Jan 17, 2001 | 24 km SE of Buedu, Sierra Leone | M4.4 | 146 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 0.7 in | Driest |
| February | 81°F (27°C) | 1.5 in | |
| March | 82°F (28°C) | 3.2 in | Warmest |
| April | 81°F (27°C) | 5.9 in | |
| May | 81°F (27°C) | 11.1 in | |
| June | 79°F (26°C) | 18.2 in | |
| July | 77°F (25°C) | 21.7 in | Wettest |
| August | 77°F (25°C) | 19.3 in | Coldest |
| September | 78°F (26°C) | 21.6 in | |
| October | 79°F (26°C) | 13.7 in | |
| November | 79°F (26°C) | 6.7 in | |
| December | 78°F (26°C) | 2.1 in |
Zimmi has a seasonal temperature swing of 5°F / from 77°F in August to 82°F in March. Total annual precipitation is 125.5 inches, with July being the wettest month (21.7") and January the driest (0.7").