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Weather & Climate in São Luís, Brazil
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
São Luís 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 194 sunny days per year. Annual precipitation totals 85.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 95 feet.
Temperature
80°F Jan (27°C)
80°F Jul (27°C)
| Annual Average | 80.5°F |
| 49% above US avg | |
| January Average | 80°F (27°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 194 days/yr |
Geography
| Elevation | 95 ft (29 m) |
| Area | 253.4 sq mi (656.4 km²) |
| Population Density | 3,619/sq mi |
| Coordinates | -2.5297°N, 44.3028°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 | 99 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) | 8.7 in | |
| February | 80°F (27°C) | 12.9 in | |
| March | 80°F (27°C) | 15.9 in | Coldest |
| April | 80°F (27°C) | 16.5 in | Wettest |
| May | 80°F (27°C) | 12.2 in | |
| June | 80°F (27°C) | 7.2 in | |
| July | 80°F (27°C) | 5.4 in | |
| August | 80°F (27°C) | 1.5 in | |
| September | 81°F (27°C) | 0.9 in | |
| October | 82°F (28°C) | 0.5 in | Driest |
| November | 82°F (28°C) | 0.5 in | Warmest |
| December | 81°F (27°C) | 3.1 in |
São Luís has a seasonal temperature swing of 2°F / from 80°F in March to 82°F in November. Total annual precipitation is 85.2 inches, with April being the wettest month (16.5") and October the driest (0.5").