All Countries
Weather & Climate in São Tomé, Brazil
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
São Tomé has a warm climate with an average annual temperature of 76°F (24°C). Winters average 77°F in January while summers reach 73°F in July / relatively mild seasonal variation. The area gets 355 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 25.1 inches (drier than the 38-inch national average). The city sits at an elevation of 548 feet.
Temperature
77°F Jan (25°C)
73°F Jul (23°C)
| Annual Average | 75.8°F |
| 40% above US avg | |
| January Average | 77°F (25°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 355 days/yr |
Geography
| Elevation | 548 ft (167 m) |
| Area | 351.5 sq mi (910.4 km²) |
| Population Density | 28/sq mi |
| Coordinates | -5.9725°N, 36.0753°W |
| Timezone | America/Fortaleza |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.3.
| Jan 11, 2010 | 2 km NW of Poço Branco, Brazil | M4.3 | 60 km | 12 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 77°F (25°C) | 1.1 in | |
| February | 79°F (26°C) | 2.2 in | Warmest |
| March | 78°F (26°C) | 4.5 in | |
| April | 77°F (25°C) | 4.7 in | Wettest |
| May | 76°F (24°C) | 2.7 in | |
| June | 74°F (23°C) | 1.6 in | |
| July | 73°F (23°C) | 1.8 in | Coldest |
| August | 73°F (23°C) | 0.6 in | |
| September | 75°F (24°C) | 0.3 in | |
| October | 77°F (25°C) | 0.1 in | Driest |
| November | 78°F (25°C) | 0.1 in | |
| December | 78°F (26°C) | 0.4 in |
São Tomé has a seasonal temperature swing of 5°F / from 73°F in July to 79°F in February. Total annual precipitation is 20.0 inches, with April being the wettest month (4.7") and October the driest (0.1").