Afternoons in Saint-Denis reach 25 to 30 degrees in every month of the year
Yearly rainfall comes to 1,530 mm. Set against mainland French towns, none of its figures stands out. Expect the heaviest rain in February and the lightest in October.
These are the figures of Météo-France’s Gillot-Aéroport station, 6.5 km east.
A year in Saint-Denis at a glance
Each month’s typical high and low in °C, at the Gillot-Aéroport station.
What a year in Saint-Denis 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 Gillot-Aéroport.
About 1,530 mm of rain a year
February is the wettest month and October the driest. About 35 days a year bring 10 mm or more. 11th wettest of 24 towns of 2,500+ in Réunion.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Gillot-Aéroport
75 days of 30°C or more a year
About 336 days a year reach 25°C and 75 reach 30°C. Frost is unknown at the coast.
Day counts are Météo-France’s 1991–2020 normals at Gillot-Aéroport: 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 Gillot-Aéroport
Gillot-Aéroport is 6.5 km east of Saint-Denis. Every figure on this page is the station’s, not a measurement in Saint-Denis itself.
| Station (Météo-France number) | Gillot-Aéroport (97418110) |
| Distance from the town | 6.5 km east |
| Station altitude | 8 m |
| Town altitude (its center) | 66 m |
| Period | 1991–2020 |
| Sunshine measured at | the same station |
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-Denis 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-Denis | Gillot-Aéroport | 30.3°C | 18.2°C | 1,530 mm |
| Sainte-Marie 7.7 km | Menciol | 29.6°C 0.7°C cooler | 16.5°C 1.7°C colder | 3,411 mm |
| La Possession 14 km | Le Port | 31.9°C 1.6°C warmer | 19.1°C 0.9°C milder | 539 mm |
| Sainte-Suzanne 15 km | Menciol | 29.6°C 0.7°C cooler | 16.5°C 1.7°C colder | 3,411 mm |
| Salazie 16 km | Mare A Vieille Place | 26.3°C 4°C cooler | 11.4°C 6.8°C colder | 3,052 mm |
| Le Port 18 km | Le Port | 31.9°C 1.6°C warmer | 19.1°C 0.9°C milder | 539 mm |
| Saint-André 21 km | Menciol | 29.6°C 0.7°C cooler | 16.5°C 1.7°C colder | 3,411 mm |
Saint-Denis weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Gillot-Aéroport station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 30.2°C | 23.6°C | 26.9°C | 270 mm | 218 |
| February | 30.3°C | 23.7°C | 27.0°C | 279 mm | 196 |
| March | 30.0°C | 23.3°C | 26.6°C | 265 mm | 215 |
| April | 29.2°C | 22.3°C | 25.8°C | 133 mm | 216 |
| May | 27.6°C | 20.7°C | 24.2°C | 96 mm | 214 |
| June | 26.2°C | 19.1°C | 22.6°C | 67 mm | 210 |
| July | 25.4°C | 18.2°C | 21.8°C | 51 mm | 222 |
| August | 25.5°C | 18.2°C | 21.9°C | 55 mm | 216 |
| September | 26.0°C | 18.7°C | 22.4°C | 49 mm | 211 |
| October | 27.0°C | 19.9°C | 23.5°C | 43 mm | 211 |
| November | 28.3°C | 21.1°C | 24.7°C | 63 mm | 212 |
| December | 29.5°C | 22.7°C | 26.1°C | 160 mm | 227 |
| Year | 27.9°C | 21.0°C | 24.5°C | 1,530 mm | 2,567 |
Where Saint-Denis’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Gillot-Aéroport, 6.5 km away: statistics for 1991–2020.
- 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, 6.5 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-Denis’s climate
How warm does Saint-Denis get in summer?
February is the warmest month, with average highs of 30.3°C. About 336 days a year reach 25°C, and about 75 reach 30°C.
Does Saint-Denis ever get cool?
Not much: the coolest nights, in July, average 18.2°C.
How much rain does Saint-Denis get?
About 1,530 mm a year. February is the wettest month (279 mm) and October the driest (43 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Gillot-Aéroport (6.5 km away), averages 2,567 hours of sunshine a year.
Are these figures for Saint-Denis itself?
No: they are the normals of the Météo-France station matched to Saint-Denis, Gillot-Aéroport, 6.5 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 GILLOT-AEROPORT, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Denis →
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.