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Weather & Climate in Rio Negro, Brazil
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Rio Negro has a warm climate with an average annual temperature of 76°F (25°C). Winters average 79°F in January while summers reach 70°F in July / relatively mild seasonal variation. The area gets 234 sunny days per year, above the national average. Annual precipitation totals 56.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 879 feet.
Temperature
79°F Jan (26°C)
70°F Jul (21°C)
| Annual Average | 76.2°F |
| 41% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 234 days/yr |
Geography
| Elevation | 879 ft (268 m) |
| Area | 779.3 sq mi (2,018.5 km²) |
| Population Density | 6/sq mi |
| Coordinates | -19.4494°N, 54.9869°W |
| Timezone | America/Campo_Grande |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.9.
| Jun 15, 2009 | 109 km W of Coxim, Brazil | M4.9 | 135 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) | 9.5 in | Wettest |
| February | 79°F (26°C) | 7.5 in | |
| March | 79°F (26°C) | 5.8 in | |
| April | 77°F (25°C) | 4.0 in | |
| May | 73°F (23°C) | 3.6 in | |
| June | 70°F (21°C) | 1.3 in | |
| July | 70°F (21°C) | 1.3 in | Coldest, Driest |
| August | 74°F (23°C) | 1.5 in | |
| September | 76°F (25°C) | 2.5 in | |
| October | 79°F (26°C) | 4.7 in | |
| November | 79°F (26°C) | 5.4 in | Warmest |
| December | 79°F (26°C) | 8.9 in |
Rio Negro has a seasonal temperature swing of 10°F / from 70°F in July to 79°F in November. Total annual precipitation is 56.2 inches, with January being the wettest month (9.5") and July the driest (1.3").