Saint-Laurent-du-Maroni is warm all year: afternoons reach 30 to 34 degrees in every month
Rain adds up to roughly 2,838 mm over twelve months. Its July, January and rain figures all sit close to those of typical mainland French towns. The gap between a January night and a July afternoon is 12°C.
These are the figures of Météo-France’s Charvein station, 15 km north-east.
A year in Saint-Laurent-du-Maroni at a glance
Each month’s typical high and low in °C, at the Charvein station.
What a year in Saint-Laurent-du-Maroni 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 Charvein.
About 2,838 mm of rain a year
May is the wettest month and October the driest. About 92 days a year bring 10 mm or more. 8th wettest of 15 towns of 2,500+ in French Guiana.
Rain by month
Millimeters
The Météo-France station at Charvein
Charvein is 15 km north-east of Saint-Laurent-du-Maroni. Every figure on this page is the station’s, not a measurement in Saint-Laurent-du-Maroni itself.
| Station (Météo-France number) | Charvein (97311005) |
| Distance from the town | 15 km north-east |
| Station altitude | 4 m |
| Town altitude (its center) | 4 m |
| Period | 1991–2020 |
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-Laurent-du-Maroni compares
Against the 15 towns of 2,500+ in French Guiana (the dots). Mainland France’s towns aren’t a fair comparison for a tropical climate.
Saint-Laurent-du-Maroni weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Charvein station.
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 29.8°C | 21.7°C | 25.7°C | 265 mm |
| February | 29.7°C | 21.8°C | 25.8°C | 241 mm |
| March | 30.4°C | 21.9°C | 26.1°C | 209 mm |
| April | 30.5°C | 22.4°C | 26.5°C | 347 mm |
| May | 30.4°C | 22.7°C | 26.6°C | 447 mm |
| June | 31.1°C | 22.2°C | 26.6°C | 352 mm |
| July | 32.0°C | 21.6°C | 26.8°C | 249 mm |
| August | 32.9°C | 21.7°C | 27.3°C | 166 mm |
| September | 33.7°C | 21.6°C | 27.6°C | 82 mm |
| October | 33.9°C | 21.7°C | 27.8°C | 68 mm |
| November | 32.5°C | 21.8°C | 27.1°C | 141 mm |
| December | 30.6°C | 21.9°C | 26.3°C | 272 mm |
| Year | 31.5°C | 21.9°C | 26.7°C | 2,838 mm |
Where Saint-Laurent-du-Maroni’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Charvein, 15 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.
- Comparisons: the towns of 2,500+ in French Guiana, read the same way.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Laurent-du-Maroni’s climate
How warm does Saint-Laurent-du-Maroni get in summer?
October is the warmest month, with average highs of 33.9°C. Météo-France publishes no count of hot days for this station.
Does Saint-Laurent-du-Maroni ever get cool?
Not much: the coolest nights, in July, average 21.6°C.
How much rain does Saint-Laurent-du-Maroni get?
About 2,838 mm a year. May is the wettest month (447 mm) and October the driest (68 mm).
Are these figures for Saint-Laurent-du-Maroni itself?
No: they are the normals of the Météo-France station matched to Saint-Laurent-du-Maroni, Charvein, 15 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 CHARVEIN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Laurent-du-Maroni →
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.