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Weather & Climate in Rosso, Mauritania
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Rosso has a warm climate with an average annual temperature of 82°F (28°C). Winters average 73°F in January while summers reach 85°F in July / relatively mild seasonal variation. The area gets 322 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 8.0 inches (drier than the 38-inch national average). The city sits at an elevation of 26 feet.
Temperature
73°F Jan (23°C)
85°F Jul (30°C)
| Annual Average | 82.1°F |
| 52% above US avg | |
| January Average | 73°F (23°C) |
| July Average | 85°F (30°C) |
| Sunny Days | 322 days/yr |
Geography
| Elevation | 26 ft (8 m) |
| Area | 277.0 sq mi (717.5 km²) |
| Population Density | 57/sq mi |
| Coordinates | 16.5138°N, 15.8050°W |
| Timezone | Africa/Nouakchott |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.4.
| Oct 16, 1999 | 123 km NNW of Saint-Louis, Senegal | M4.4 | 140 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 73°F (23°C) | 0.0 in | Coldest |
| February | 77°F (25°C) | 0.0 in | |
| March | 80°F (27°C) | 0.0 in | |
| April | 83°F (28°C) | 0.1 in | |
| May | 86°F (30°C) | 0.0 in | Driest |
| June | 87°F (30°C) | 0.3 in | Warmest |
| July | 85°F (30°C) | 1.2 in | |
| August | 85°F (30°C) | 3.1 in | Wettest |
| September | 86°F (30°C) | 2.6 in | |
| October | 86°F (30°C) | 0.4 in | |
| November | 82°F (28°C) | 0.1 in | |
| December | 75°F (24°C) | 0.0 in |
Rosso has a seasonal temperature swing of 13°F / from 73°F in January to 87°F in June. Total annual precipitation is 8.0 inches, with August being the wettest month (3.1") and May the driest (0.0").