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Weather & Climate in São Martinho, Brazil
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
São Martinho has a warm climate with an average annual temperature of 71°F (22°C). Winters average 77°F in January while summers reach 64°F in July / relatively mild seasonal variation. The area gets 264 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 77.3 inches (wetter than the 38-inch national average). The city sits at an elevation of 138 feet.
Temperature
77°F Jan (25°C)
64°F Jul (18°C)
| Annual Average | 71.3°F |
| 32% above US avg | |
| January Average | 77°F (25°C) |
| July Average | 64°F (18°C) |
| Sunny Days | 264 days/yr |
Geography
| Elevation | 138 ft (42 m) |
| Area | 75.9 sq mi (196.6 km²) |
| Population Density | 45/sq mi |
| Coordinates | -28.1647°N, 48.9794°W |
| Timezone | America/Sao_Paulo |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.2.
| Apr 13, 2018 | 4 km NE of Santo Amaro da Imperatriz, Brazil | M3.2 | 61 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2004 | Unnamed | Category 1 | 86 mph | 111 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 77°F (25°C) | 8.0 in | Warmest, Wettest |
| February | 72°F (22°C) | 7.4 in | |
| March | 71°F (22°C) | 6.2 in | |
| April | 66°F (19°C) | 4.3 in | |
| May | 61°F (16°C) | 3.7 in | |
| June | 59°F (15°C) | 3.9 in | |
| July | 64°F (18°C) | 3.3 in | Driest |
| August | 58°F (15°C) | 4.5 in | Coldest |
| September | 61°F (16°C) | 5.5 in | |
| October | 63°F (17°C) | 5.2 in | |
| November | 66°F (19°C) | 4.7 in | |
| December | 70°F (21°C) | 4.7 in |
São Martinho has a seasonal temperature swing of 19°F / from 58°F in August to 77°F in January. Total annual precipitation is 61.5 inches, with January being the wettest month (8.0") and July the driest (3.3").