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Weather & Climate in Les Trois-Bassins, Reunion
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Les Trois-Bassins 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 2,628 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 | 2,628 ft (801 m) |
| Area | 21.5 sq mi (55.7 km²) |
| Population Density | 331/sq mi |
| Coordinates | -21.1000°N, 55.3000°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 | 38 km | 10 km |
| Feb 27, 2018 | 76 km ENE of Sainte-Rose, Reunion | M4.1 | 127 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 | 24 km |
| 2024 | Belal | Category 2 | 86 mph | 39 km |
| 2023 | Freddy | Category 4 | 127 mph | 205 km |
| 2022 | Batsirai | Category 4 | 127 mph | 207 km |
| 2020 | Calvinia | Category 1 | 63 mph | 280 km |
| 2018 | Fakir | Category 1 | 81 mph | 84 km |
| 2014 | Bejisa | Category 4 | 92 mph | 56 km |
| 2013 | Dumile | Category 1 | 81 mph | 104 km |
| 2007 | Gamede | Category 3 | 104 mph | 246 km |
| 2002 | Dina | Category 4 | 115 mph | 100 km |
| 2001 | Ando | Category 4 | 121 mph | 212 km |
| 2000 | Connie | Category 2 | 109 mph | 138 km |
| 2000 | Eline:leone | Category 1 | 75 mph | 167 km |
| 1999 | Davina | Category 2 | 81 mph | 81 km |
| 1997 | Gretelle | Category 2 | 86 mph | 297 km |
| 1997 | Chantelle:daniella | Category 2 | 86 mph | 165 km |
| 1996 | Bonita | Category 4 | 115 mph | 281 km |
| 1995 | Kylie | Category 2 | 48 mph | 46 km |
| 1994 | Hollanda | Category 3 | 98 mph | 76 km |
| 1993 | Colina | Category 2 | 83 mph | 38 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
1 volcano within 200 km. Closest: Fournaise, Piton de la (45 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Fournaise, Piton de la | Shield | 2,632 m (8,635 ft) | 2020 | 45 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 78°F (26°C) | 8.9 in | Warmest, Wettest |
| February | 75°F (24°C) | 8.7 in | |
| March | 74°F (24°C) | 8.8 in | |
| April | 72°F (22°C) | 6.3 in | |
| May | 69°F (21°C) | 4.1 in | |
| June | 66°F (19°C) | 3.1 in | |
| July | 71°F (22°C) | 2.7 in | |
| August | 65°F (18°C) | 2.8 in | Coldest |
| September | 66°F (19°C) | 2.5 in | |
| October | 68°F (20°C) | 2.2 in | Driest |
| November | 71°F (21°C) | 3.2 in | |
| December | 73°F (23°C) | 5.9 in |
Les Trois-Bassins has a seasonal temperature swing of 13°F / from 65°F in August to 78°F in January. Total annual precipitation is 59.3 inches, with January being the wettest month (8.9") and October the driest (2.2").