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Monthly climate in Coyah, Guinea

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Coyah features a tropical monsoon climate (Am). Temperatures typically range between 25 °C (78 °F) and 28 °C (83 °F) through the year, but rarely can drop to 18 °C (65 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 2930 mm (115.4 inches) and receives 175 rainy days on the 1 mm (0.04 inches) threshold annually. Coyah enjoys an average of 3258 hours of sunshine throughout the year, and daylight varies from 11 hours 33 minutes to 12 hours 40 minutes per day.

Monthly average temperatures in Coyah, Guinea

The warmest months in Coyah are March, April and May, with daily mean temperatures ranging from 28 to 28 °C (82 - 83 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 25 to 26 °C (78 - 79 °F) throughout the day. On average each year, Coyah experiences 328 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 Coyah. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum37°C
(99°F)		36°C
(97°F)		36°C
(98°F)		37°C
(98°F)		35°C
(96°F)		34°C
(94°F)		31°C
(87°F)		31°C
(88°F)		33°C
(92°F)		32°C
(90°F)		33°C
(91°F)		35°C
(95°F)
Mean maximum35°C
(95°F)		35°C
(96°F)		35°C
(95°F)		35°C
(96°F)		34°C
(94°F)		32°C
(90°F)		30°C
(87°F)		30°C
(86°F)		32°C
(89°F)		32°C
(90°F)		32°C
(90°F)		33°C
(92°F)
Average high32°C
(91°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		32°C
(89°F)		30°C
(85°F)		28°C
(83°F)		28°C
(82°F)		29°C
(84°F)		30°C
(87°F)		30°C
(87°F)		31°C
(89°F)
Daily mean26°C
(80°F)		27°C
(81°F)		28°C
(82°F)		28°C
(83°F)		28°C
(82°F)		27°C
(80°F)		25°C
(78°F)		25°C
(78°F)		26°C
(79°F)		27°C
(80°F)		27°C
(80°F)		26°C
(80°F)
Average low22°C
(71°F)		22°C
(72°F)		23°C
(74°F)		24°C
(76°F)		25°C
(77°F)		24°C
(76°F)		24°C
(75°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		23°C
(73°F)
Mean minimum19°C
(67°F)		20°C
(69°F)		21°C
(71°F)		22°C
(72°F)		23°C
(74°F)		23°C
(74°F)		22°C
(72°F)		22°C
(73°F)		22°C
(73°F)		22°C
(73°F)		22°C
(72°F)		20°C
(69°F)
Minimum18°C
(65°F)		20°C
(67°F)		20°C
(68°F)		21°C
(70°F)		22°C
(72°F)		23°C
(73°F)		22°C
(71°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		21°C
(70°F)		18°C
(66°F)

Compare climate in Coyah with other places

Compare temperature, precipitation, sunshine, UV index in Coyah, Guinea with other places around the world.

Monthly average precipitation in Coyah, Guinea

Coyah usually has the most precipitation in July, August and September, with an average of 29 rainy days and 745 mm (29.3 inches) of precipitation per month. The driest months in Coyah are January, February and March. On average, 1 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Coyah. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)0 (0.0)0 (0.0)2 (0.1)13 (0.5)65 (2.6)274 (10.8)922 (36.3)839 (33.0)475 (18.7)232 (9.1)101 (4.0)7 (0.3)
Average precipitation days (≥ 1 mm)0002112631302828172

Monthly sunshine hours in Coyah, Guinea

The sunniest months in Coyah are March, April and December, when the sun shines an average of 10 hours 29 minutes a day. Least sunny months in Coyah: July, August and September receive an average of 6 hours 51 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Coyah. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours258292327318312238220188222276284319
Mean daily daylight hours11h 36m11h 48m12h 3m12h 19m12h 33m12h 40m12h 36m12h 24m12h 9m11h 53m11h 39m11h 33m

Solar UV radiation in Coyah, Guinea

Coyah experiences the highest level of ultraviolet (UV) radiation in July, August and September, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure. February, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 10. For more detailed information, check out our hourly Coyah UV Index data.

Average daily maximum UV levels by month for Coyah. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)1010121212131313141299