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Weather & Climate in Sonaco, Guinea-Bissau
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sonaco has a warm climate with an average annual temperature of 80°F (26°C). Winters average 74°F in January while summers reach 79°F in July / relatively mild seasonal variation. The area gets 247 sunny days per year, above the national average. Annual precipitation totals 53.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 75 feet.
Temperature
74°F Jan (23°C)
79°F Jul (26°C)
| Annual Average | 79.5°F |
| 47% above US avg | |
| January Average | 74°F (23°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 247 days/yr |
Geography
| Elevation | 75 ft (23 m) |
| Area | 662.9 sq mi (1,717.0 km²) |
| Population Density | 4/sq mi |
| Coordinates | 12.4000°N, 14.4833°W |
| Timezone | Africa/Bissau |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| Aug 23, 2012 | 15 km WNW of Gaoual, Guinea | M4.2 | 142 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 74°F (23°C) | 0.0 in | Driest |
| February | 78°F (26°C) | 0.0 in | |
| March | 83°F (28°C) | 0.0 in | |
| April | 86°F (30°C) | 0.0 in | Warmest |
| May | 85°F (30°C) | 1.3 in | |
| June | 82°F (28°C) | 5.4 in | |
| July | 79°F (26°C) | 10.4 in | |
| August | 78°F (25°C) | 15.7 in | Wettest |
| September | 79°F (26°C) | 13.5 in | |
| October | 80°F (27°C) | 6.2 in | |
| November | 78°F (26°C) | 0.4 in | |
| December | 73°F (23°C) | 0.2 in | Coldest |
Sonaco has a seasonal temperature swing of 12°F / from 73°F in December to 86°F in April. Total annual precipitation is 53.1 inches, with August being the wettest month (15.7") and January the driest (0.0").