Afternoons in Grand'Rivière reach 29 to 31 degrees in every month of the year
A rain gauge here collects about 2,636 mm in an average year. Temperatures cover 10°C across the year, low to high. Its July, January and rain figures all sit close to those of typical mainland French towns.
Figures from Météo-France’s Bassepointe-Chal station, 8.9 km east.
A year in Grand'Rivière at a glance
Each month’s typical high and low in °C, at the Bassepointe-Chal station.
What a year in Grand'Rivière 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 Bassepointe-Chal.
About 2,636 mm of rain a year
November is the wettest month and February the driest. About 74 days a year bring 10 mm or more. 2nd wettest of 27 towns of 2,500+ in Martinique.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Lamentin-Aéro
The Météo-France station at Bassepointe-Chal
Bassepointe-Chal is 8.9 km east of Grand'Rivière. Every figure on this page is the station’s, not a measurement in Grand'Rivière itself.
| Station (Météo-France number) | Bassepointe-Chal (97203003) |
| Distance from the town | 8.9 km east |
| Station altitude | 45 m |
| Town altitude (its center) | 26 m |
| Period | 1991–2020 |
| Sunshine measured at | Lamentin-Aéro, 37 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 Grand'Rivière compares
Against the 27 towns of 2,500+ in Martinique (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. Where a neighbor uses the same station its figures are the same: the differences you’d feel over a few kilometers aren’t in the normals.
| Town | Station | Warmest-month high | Coolest-month low | Rain a year |
|---|---|---|---|---|
| Grand'Rivière | Bassepointe-Chal | 31.4°C | 21.4°C | 2,636 mm |
| Basse-Pointe 6.2 km | same station | 31.4°C about the same | 21.4°C about the same | 2,636 mm |
| Le Morne-Rouge 12 km | Fond-Denis-Cadet | 28.0°C 3.4°C cooler | 19.4°C 2°C colder | 2,945 mm |
| Le Lorrain 13 km | same station | 31.4°C about the same | 21.4°C about the same | 2,636 mm |
| Saint-Pierre 14 km | same station | 31.4°C about the same | 21.4°C about the same | 2,636 mm |
| Le Marigot 17 km | same station | 31.4°C about the same | 21.4°C about the same | 2,636 mm |
| Le Carbet 19 km | Saint-Joseph Lezard | 30.9°C 0.5°C cooler | 21.6°C about the same | 2,404 mm |
Grand'Rivière weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Bassepointe-Chal station; sunshine at Lamentin-Aéro.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 28.7°C | 21.7°C | 25.2°C | 158 mm | 202 |
| February | 28.8°C | 21.4°C | 25.1°C | 95 mm | 202 |
| March | 29.2°C | 21.6°C | 25.4°C | 111 mm | 229 |
| April | 29.8°C | 22.3°C | 26.1°C | 193 mm | 218 |
| May | 30.5°C | 23.3°C | 26.9°C | 200 mm | 217 |
| June | 30.6°C | 24.1°C | 27.4°C | 195 mm | 195 |
| July | 30.8°C | 24.1°C | 27.5°C | 239 mm | 216 |
| August | 31.2°C | 24.0°C | 27.6°C | 280 mm | 223 |
| September | 31.4°C | 23.4°C | 27.4°C | 269 mm | 207 |
| October | 31.1°C | 23.2°C | 27.2°C | 313 mm | 205 |
| November | 30.3°C | 22.9°C | 26.6°C | 363 mm | 183 |
| December | 29.4°C | 22.2°C | 25.8°C | 221 mm | 193 |
| Year | 30.1°C | 22.9°C | 26.5°C | 2,636 mm | 2,489 |
Where Grand'Rivière’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Bassepointe-Chal, 8.9 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, Lamentin-Aéro, 37 km away.
- Comparisons: the towns of 2,500+ in Martinique, read the same way.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Grand'Rivière’s climate
How warm does Grand'Rivière get in summer?
September is the warmest month, with average highs of 31.4°C. Météo-France publishes no count of hot days for this station.
Does Grand'Rivière ever get cool?
Not much: the coolest nights, in February, average 21.4°C.
How much rain does Grand'Rivière get?
About 2,636 mm a year. November is the wettest month (363 mm) and February the driest (95 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Lamentin-Aéro (37 km away), averages 2,489 hours of sunshine a year.
Are these figures for Grand'Rivière itself?
No: they are the normals of the Météo-France station matched to Grand'Rivière, Bassepointe-Chal, 8.9 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 BASSEPOINTE-CHAL, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Grand'Rivière →
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.