Monthly climate in Mana, French Guiana

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Mana features a tropical rainforest climate (Af). Temperatures typically range between 26 °C (79 °F) and 27 °C (82 °F) through the year, but rarely can drop to 24 °C (75 °F) or can rise to as high as 30 °C (87 °F). The average annual precipitation amounts to about 2469 mm (97.2 inches) and receives 288 rainy days on the 1 mm (0.04 inches) threshold annually. Mana enjoys an average of 3630 hours of sunshine throughout the year, and daylight varies from 11 hours 47 minutes to 12 hours 25 minutes per day.

Monthly average temperatures in Mana, French Guiana

The warmest months in Mana are August, September and October, with daily mean temperatures ranging from 27 to 27 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 26 to 26 °C (79 - 79 °F) throughout the day. On average each year, Mana experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Mana. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(83°F)
27°C
(82°F)
28°C
(83°F)
28°C
(83°F)
29°C
(84°F)
29°C
(84°F)
30°C
(86°F)
30°C
(87°F)
30°C
(87°F)
30°C
(87°F)
29°C
(85°F)
29°C
(84°F)
Mean maximum28°C
(82°F)
27°C
(81°F)
28°C
(82°F)
28°C
(83°F)
28°C
(83°F)
28°C
(83°F)
29°C
(84°F)
30°C
(86°F)
30°C
(86°F)
30°C
(85°F)
29°C
(84°F)
28°C
(83°F)
Average high27°C
(80°F)
27°C
(80°F)
27°C
(81°F)
27°C
(81°F)
27°C
(81°F)
27°C
(81°F)
28°C
(82°F)
29°C
(84°F)
29°C
(84°F)
29°C
(84°F)
28°C
(83°F)
27°C
(81°F)
Daily mean26°C
(79°F)
26°C
(79°F)
26°C
(79°F)
26°C
(80°F)
26°C
(79°F)
26°C
(79°F)
26°C
(80°F)
27°C
(81°F)
27°C
(81°F)
27°C
(82°F)
27°C
(81°F)
26°C
(79°F)
Average low25°C
(77°F)
25°C
(77°F)
25°C
(78°F)
25°C
(78°F)
25°C
(78°F)
25°C
(77°F)
25°C
(77°F)
26°C
(78°F)
26°C
(79°F)
26°C
(79°F)
26°C
(78°F)
25°C
(77°F)
Mean minimum24°C
(76°F)
24°C
(76°F)
24°C
(76°F)
24°C
(76°F)
25°C
(76°F)
24°C
(76°F)
24°C
(75°F)
24°C
(76°F)
25°C
(77°F)
25°C
(78°F)
25°C
(77°F)
24°C
(76°F)
Minimum24°C
(75°F)
24°C
(76°F)
24°C
(75°F)
24°C
(76°F)
24°C
(76°F)
24°C
(76°F)
24°C
(75°F)
24°C
(76°F)
24°C
(76°F)
25°C
(77°F)
25°C
(76°F)
24°C
(76°F)

Compare climate in Mana with other places

Compare temperature, precipitation, sunshine, UV index in Mana, French Guiana with other places around the world.

Monthly average precipitation in Mana, French Guiana

Mana usually has the most precipitation in April, May and June, with an average of 29 rainy days and 383 mm (15.1 inches) of precipitation per month. The driest months in Mana are August, September and October. On average, 66 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mana. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)170 (6.7)125 (4.9)154 (6.1)348 (13.7)417 (16.4)384 (15.1)231 (9.1)86 (3.4)52 (2.0)61 (2.4)172 (6.8)268 (10.6)
Average precipitation days (≥ 1 mm)232425273129281614162530

Monthly sunshine hours in Mana, French Guiana

The sunniest months in Mana are August, September and October, when the sun shines an average of 11 hours 5 minutes a day. Least sunny months in Mana: January, February and May receive an average of 8 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mana. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours251268321285278282324345335340302294
Mean daily daylight hours11h 49m11h 55m12h 4m12h 14m12h 22m12h 25m12h 23m12h 16m12h 7m11h 58m11h 50m11h 47m

Solar UV radiation in Mana, French Guiana

Mana experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 14 - 16, which corresponds to the Extreme category of sun exposure. June, July and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 13. For more detailed information, check out our hourly Mana UV Index data.

Average daily maximum UV levels by month for Mana. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)131416161413121313131311