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Weather & Climate in Saint-Denis, Reunion
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saint-Denis has a warm climate with an average annual temperature of 76°F (24°C). Winters average 78°F in January while summers reach 71°F in July / relatively mild seasonal variation. The area gets 353 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 82.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 144 feet.
Temperature
78°F Jan (26°C)
71°F Jul (22°C)
| Annual Average | 75.6°F |
| 40% above US avg | |
| January Average | 78°F (26°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 353 days/yr |
Geography
| Elevation | 144 ft (44 m) |
| Area | 55.1 sq mi (142.8 km²) |
| Population Density | 2,807/sq mi |
| Coordinates | -20.8823°N, 55.4504°W |
| Timezone | Indian/Reunion |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.
| Apr 5, 2007 | 15 km WSW of Sainte-Rose, Reunion | M5.3 | 40 km | 10 km |
| Feb 27, 2018 | 76 km ENE of Sainte-Rose, Reunion | M4.1 | 111 km | 14 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
20 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Garance | Category 3 | 115 mph | 14 km |
| 2024 | Belal | Category 2 | 86 mph | 11 km |
| 2023 | Freddy | Category 4 | 127 mph | 185 km |
| 2022 | Batsirai | Category 4 | 127 mph | 189 km |
| 2020 | Calvinia | Category 1 | 63 mph | 267 km |
| 2018 | Fakir | Category 1 | 81 mph | 56 km |
| 2014 | Bejisa | Category 4 | 92 mph | 82 km |
| 2013 | Dumile | Category 1 | 81 mph | 120 km |
| 2009 | Gael | Category 3 | 104 mph | 288 km |
| 2007 | Gamede | Category 3 | 104 mph | 223 km |
| 2002 | Dina | Category 4 | 115 mph | 80 km |
| 2001 | Ando | Category 4 | 121 mph | 217 km |
| 2000 | Connie | Category 2 | 109 mph | 141 km |
| 2000 | Eline:leone | Category 1 | 75 mph | 156 km |
| 1999 | Davina | Category 2 | 81 mph | 89 km |
| 1997 | Gretelle | Category 2 | 86 mph | 296 km |
| 1997 | Chantelle:daniella | Category 2 | 86 mph | 140 km |
| 1996 | Bonita | Category 4 | 115 mph | 260 km |
| 1995 | Kylie | Category 2 | 48 mph | 21 km |
| 1994 | Litanne | Category 4 | 121 mph | 298 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Nearby Volcanoes
1 volcano within 200 km. Closest: Fournaise, Piton de la (48 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Fournaise, Piton de la | Shield | 2,632 m (8,635 ft) | 2020 | 48 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 78°F (26°C) | 9.9 in | Warmest, Wettest |
| February | 73°F (23°C) | 9.8 in | |
| March | 73°F (23°C) | 9.3 in | |
| April | 71°F (22°C) | 7.0 in | |
| May | 68°F (20°C) | 4.7 in | |
| June | 65°F (18°C) | 3.4 in | |
| July | 71°F (22°C) | 2.9 in | |
| August | 63°F (17°C) | 3.0 in | Coldest |
| September | 64°F (18°C) | 2.5 in | |
| October | 66°F (19°C) | 2.2 in | Driest |
| November | 69°F (20°C) | 3.3 in | |
| December | 71°F (22°C) | 6.5 in |
Saint-Denis has a seasonal temperature swing of 15°F / from 63°F in August to 78°F in January. Total annual precipitation is 64.3 inches, with January being the wettest month (9.9") and October the driest (2.2").