Photo: Clémenceau Lauret · CC BY-SA 4.0Saint-Louis is warm all year: afternoons reach 26 to 32 degrees in every month
About 695 mm of rain falls in a typical year. Seasons differ by 16°C, from the coldest nights to the warmest afternoons. Set against mainland French towns, none of its figures stands out.
Figures from Météo-France’s Pierrefonds - Cirad station, 4.7 km south.
A year in Saint-Louis at a glance
Each month’s typical high and low in °C, at the Pierrefonds - Cirad station.
What a year in Saint-Louis feels like
Typical highs and lows in the rainier and the drier half of the year, and by month, from Météo-France’s 1991–2020 normals at Pierrefonds - Cirad.
About 695 mm of rain a year
February is the wettest month and October the driest. About 20 days a year bring 10 mm or more. 22nd wettest of 24 towns of 2,500+ in Réunion.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Gillot-Aéroport
135 days of 30°C or more a year
About 338 days a year reach 25°C and 135 reach 30°C. Frost is unknown at the coast.
Day counts are Météo-France’s 1991–2020 normals at Pierrefonds - Cirad: a frost is a night of 0°C or below, a summer day (jour d’été) 25°C or more, a hot day (forte chaleur) 30°C or more.
The Météo-France station at Pierrefonds - Cirad
Pierrefonds - Cirad is 4.7 km south of Saint-Louis. Every figure on this page is the station’s, not a measurement in Saint-Louis itself.
| Station (Météo-France number) | Pierrefonds - Cirad (97416415) |
| Distance from the town | 4.7 km south |
| Station altitude | 61 m |
| Town altitude (its center) | 125 m |
| Period | 1997–2020 (the station’s own record) |
| Nearest station of any kind | 2.6 km |
| Sunshine measured at | Gillot-Aéroport, 43 km away |
TownRatings matches each commune to one station with at least 24 years of temperature and rain records: the nearest, counting every 100 m of height difference as 10 km, never across the sea.
How Saint-Louis compares
Against the 24 towns of 2,500+ in Réunion (the dots). Mainland France’s towns aren’t a fair comparison for a tropical climate.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km, each with its own matched station.
| Town | Station | Warmest-month high | Coolest-month low | Rain a year |
|---|---|---|---|---|
| Saint-Louis | Pierrefonds - Cirad | 31.6°C | 16.0°C | 695 mm |
| Entre-Deux 5.6 km | Le Gol les Hauts - Cirad | 29.6°C 2°C cooler | 14.4°C 1.6°C colder | 1,162 mm |
| L'Étang-Salé 6.5 km | Pont-Mathurin | 32.0°C about the same | 16.0°C about the same | 736 mm |
| Saint-Pierre 7.8 km | Ligne-Paradis - Cirad | 31.0°C 0.6°C cooler | 15.9°C about the same | 956 mm |
| Les Avirons 9.5 km | Le Gol les Hauts - Cirad | 29.6°C 2°C cooler | 14.4°C 1.6°C colder | 1,162 mm |
| Le Tampon 10 km | Le Tampon - Cirad | 26.8°C 4.8°C cooler | 11.0°C 5°C colder | 1,424 mm |
| Cilaos 14 km | Cilaos | 25.5°C 6.1°C cooler | 7.4°C 8.6°C colder | 1,765 mm |
Saint-Louis weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Pierrefonds - Cirad station; sunshine at Gillot-Aéroport.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 31.6°C | 22.5°C | 27.1°C | 109 mm | 218 |
| February | 31.6°C | 22.6°C | 27.1°C | 116 mm | 196 |
| March | 31.1°C | 21.9°C | 26.5°C | 97 mm | 215 |
| April | 29.9°C | 20.7°C | 25.3°C | 75 mm | 216 |
| May | 28.2°C | 19.0°C | 23.6°C | 48 mm | 214 |
| June | 26.5°C | 17.1°C | 21.8°C | 50 mm | 210 |
| July | 25.6°C | 16.2°C | 20.9°C | 53 mm | 222 |
| August | 26.0°C | 16.0°C | 21.0°C | 26 mm | 216 |
| September | 26.8°C | 16.6°C | 21.7°C | 21 mm | 211 |
| October | 28.0°C | 18.0°C | 23.0°C | 17 mm | 211 |
| November | 29.5°C | 19.6°C | 24.5°C | 31 mm | 212 |
| December | 30.9°C | 21.3°C | 26.1°C | 53 mm | 227 |
| Year | 28.8°C | 19.3°C | 24.1°C | 695 mm | 2,567 |
Where Saint-Louis’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Pierrefonds - Cirad, 4.7 km away: statistics for 1991–2020 (the station’s own years, 1997–2020, where its record is shorter).
- Which station: among stations with at least 24 of the 30 years of temperature and rain, the nearest to the commune’s population-weighted center, counting each 100 m of height difference as 10 km; mainland towns use mainland stations and each overseas département its own.
- Altitudes: the town’s from IGN’s RGE ALTI® at its population-weighted center; the station’s from Météo-France.
- Sunshine: the nearest station with at least 10 years of sunshine records, Gillot-Aéroport, 43 km away.
- Comparisons: the towns of 2,500+ in Réunion, read the same way.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Louis’s climate
How warm does Saint-Louis get in summer?
January is the warmest month, with average highs of 31.6°C. About 338 days a year reach 25°C, and about 135 reach 30°C.
Does Saint-Louis ever get cool?
Not much: the coolest nights, in August, average 16.0°C.
How much rain does Saint-Louis get?
About 695 mm a year. February is the wettest month (116 mm) and October the driest (17 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Gillot-Aéroport (43 km away), averages 2,567 hours of sunshine a year.
Are these figures for Saint-Louis itself?
No: they are the normals of the Météo-France station matched to Saint-Louis, Pierrefonds - Cirad, 4.7 km away. France publishes its climate normals by station, not by commune; a valley, a hill or the sea can make a difference over a few kilometers.
Where do these figures come from?
Météo-France’s fiches climatologiques: 30-year averages (1991–2020) for each of its long-running stations, published as open data since 2024. They are normals, not a forecast.
Source: Météo-France, fiches climatologiques, 1991–2020 statistics (station PIERREFONDS - CIRAD, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Louis →
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.