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Weather & Climate in Rosário, Brazil
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Rosário has a warm climate with an average annual temperature of 81°F (27°C). Winters average 79°F in January while summers reach 81°F in July / relatively mild seasonal variation. The area gets 334 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 71.4 inches (wetter than the 38-inch national average). The city sits at an elevation of 3 feet.
Temperature
79°F Jan (26°C)
81°F Jul (27°C)
| Annual Average | 80.7°F |
| 49% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 334 days/yr |
Geography
| Elevation | 3 ft (1 m) |
| Area | 257.1 sq mi (665.8 km²) |
| Population Density | 150/sq mi |
| Coordinates | -2.9405°N, 44.2490°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 | 56 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 8.7 in | Coldest |
| February | 80°F (26°C) | 11.4 in | |
| March | 80°F (26°C) | 14.8 in | Wettest |
| April | 80°F (27°C) | 14.7 in | |
| May | 80°F (27°C) | 11.1 in | |
| June | 80°F (27°C) | 5.4 in | |
| July | 81°F (27°C) | 4.0 in | |
| August | 80°F (27°C) | 1.7 in | |
| September | 81°F (27°C) | 1.1 in | |
| October | 82°F (28°C) | 0.7 in | Warmest, Driest |
| November | 82°F (28°C) | 0.8 in | |
| December | 81°F (27°C) | 3.4 in |
Rosário has a seasonal temperature swing of 3°F / from 79°F in January to 82°F in October. Total annual precipitation is 77.7 inches, with March being the wettest month (14.8") and October the driest (0.7").