Afternoons in Mana reach 30 to 34 degrees in every month of the year
Twelve months of showers and storms leave about 2,838 mm. Set against mainland French towns, none of its figures stands out. The rainiest month is May; the driest is October.
Figures from Météo-France’s Charvein station, 18 km south-west.
A year in Mana at a glance
Each month’s typical high and low in °C, at the Charvein station.
What a year in Mana 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 18 km south-west of Mana. Every figure on this page is the station’s, not a measurement in Mana itself.
| Station (Météo-France number) | Charvein (97311005) |
| Distance from the town | 18 km south-west |
| 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 Mana 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.
Mana 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 Mana’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Charvein, 18 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 Mana’s climate
How warm does Mana 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 Mana ever get cool?
Not much: the coolest nights, in July, average 21.6°C.
How much rain does Mana get?
About 2,838 mm a year. May is the wettest month (447 mm) and October the driest (68 mm).
Are these figures for Mana itself?
No: they are the normals of the Météo-France station matched to Mana, Charvein, 18 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 Mana →
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.