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Weather & Climate in São Mateus do Maranhão, Brazil
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
São Mateus do Maranhão has a warm climate with an average annual temperature of 81°F (27°C). Winters average 80°F in January while summers reach 80°F in July / relatively mild seasonal variation. The area gets 222 sunny days per year, above the national average. Annual precipitation totals 63.4 inches (wetter than the 38-inch national average). The city sits at an elevation of 154 feet.
Temperature
80°F Jan (27°C)
80°F Jul (27°C)
| Annual Average | 81.4°F |
| 51% above US avg | |
| January Average | 80°F (27°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 222 days/yr |
Geography
| Elevation | 154 ft (47 m) |
| Area | 391.4 sq mi (1,013.7 km²) |
| Population Density | 99/sq mi |
| Coordinates | -4.0417°N, 44.4750°W |
| Timezone | America/Fortaleza |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Jan 3, 2017 | Maranhao, Brazil | M4.5 | 95 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 80°F (27°C) | 9.1 in | |
| February | 80°F (27°C) | 10.6 in | Coldest |
| March | 80°F (27°C) | 13.0 in | Wettest |
| April | 80°F (27°C) | 11.3 in | |
| May | 81°F (27°C) | 6.9 in | |
| June | 80°F (27°C) | 1.7 in | |
| July | 80°F (27°C) | 0.9 in | |
| August | 82°F (28°C) | 0.7 in | Driest |
| September | 84°F (29°C) | 0.8 in | |
| October | 84°F (29°C) | 1.4 in | Warmest |
| November | 84°F (29°C) | 2.2 in | |
| December | 82°F (28°C) | 4.7 in |
São Mateus do Maranhão has a seasonal temperature swing of 4°F / from 80°F in February to 84°F in October. Total annual precipitation is 63.4 inches, with March being the wettest month (13.0") and August the driest (0.7").