Roura is warm all year: afternoons reach 29 to 33 degrees in every month
Yearly rainfall comes to 3,488 mm. Set against mainland French towns, none of its figures stands out. May is the wettest month here, with about 11 times the rain of October.
These are the figures of Météo-France’s Cayenne-Matoury station, 11 km north-west.
A year in Roura at a glance
Each month’s typical high and low in °C, at the Cayenne-Matoury station.
What a year in Roura 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 Cayenne-Matoury.
About 3,488 mm of rain a year
May is the wettest month and October the driest. About 101 days a year bring 10 mm or more. The wettest of 15 towns of 2,500+ in French Guiana.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Cayenne-Matoury
The Météo-France station at Cayenne-Matoury
Cayenne-Matoury is 11 km north-west of Roura. Every figure on this page is the station’s, not a measurement in Roura itself.
| Station (Météo-France number) | Cayenne-Matoury (97307001) |
| Distance from the town | 11 km north-west |
| Station altitude | 4 m |
| Town altitude (its center) | 22 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 Roura 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.
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 |
|---|---|---|---|---|
| Roura | Cayenne-Matoury | 32.5°C | 22.4°C | 3,488 mm |
| Matoury 14 km | same station | 32.5°C about the same | 22.4°C about the same | 3,488 mm |
| Remire-Montjoly 20 km | same station | 32.5°C about the same | 22.4°C about the same | 3,488 mm |
| Cayenne 23 km | same station | 32.5°C about the same | 22.4°C about the same | 3,488 mm |
| Montsinéry-Tonnegrande 26 km | same station | 32.5°C about the same | 22.4°C about the same | 3,488 mm |
Roura weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Cayenne-Matoury station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 29.3°C | 23.4°C | 26.4°C | 399 mm | 102 |
| February | 29.3°C | 23.5°C | 26.4°C | 335 mm | 90 |
| March | 29.7°C | 23.6°C | 26.7°C | 315 mm | 117 |
| April | 30.0°C | 23.8°C | 26.9°C | 443 mm | 121 |
| May | 30.1°C | 23.6°C | 26.8°C | 600 mm | 121 |
| June | 30.5°C | 23.0°C | 26.8°C | 392 mm | 153 |
| July | 31.1°C | 22.5°C | 26.8°C | 262 mm | 200 |
| August | 31.8°C | 22.5°C | 27.2°C | 135 mm | 231 |
| September | 32.4°C | 22.5°C | 27.4°C | 63 mm | 251 |
| October | 32.5°C | 22.4°C | 27.5°C | 55 mm | 257 |
| November | 31.7°C | 22.7°C | 27.2°C | 135 mm | 208 |
| December | 30.3°C | 23.2°C | 26.7°C | 352 mm | 150 |
| Year | 30.7°C | 23.1°C | 26.9°C | 3,488 mm | 2,003 |
Where Roura’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Cayenne-Matoury, 11 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, Cayenne-Matoury, 11 km away.
- 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 Roura’s climate
How warm does Roura get in summer?
October is the warmest month, with average highs of 32.5°C. Météo-France publishes no count of hot days for this station.
Does Roura ever get cool?
Not much: the coolest nights, in October, average 22.4°C.
How much rain does Roura get?
About 3,488 mm a year. May is the wettest month (600 mm) and October the driest (55 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Cayenne-Matoury (11 km away), averages 2,003 hours of sunshine a year.
Are these figures for Roura itself?
No: they are the normals of the Météo-France station matched to Roura, Cayenne-Matoury, 11 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 CAYENNE-MATOURY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Roura →
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.