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Monthly climate in Say, Niger

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Say features a hot semi-arid climate (BSh). Temperatures typically range between 24 °C (76 °F) and 35 °C (94 °F) through the year, but rarely can drop to 13 °C (57 °F) or can rise to as high as 44 °C (112 °F). The average annual precipitation amounts to about 376 mm (14.8 inches) and receives 50 rainy days on the 1 mm (0.04 inches) threshold annually. Say enjoys an average of 3923 hours of sunshine throughout the year, and daylight varies from 11 hours 21 minutes to 12 hours 52 minutes per day.

Monthly average temperatures in Say, Niger

The warmest months in Say are April, May and June, with daily mean temperatures ranging from 32 to 35 °C (90 - 94 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 24 to 27 °C (76 - 81 °F) throughout the day. On average each year, Say 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 Say. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum38°C
(100°F)		39°C
(103°F)		42°C
(109°F)		44°C
(112°F)		44°C
(111°F)		43°C
(109°F)		39°C
(102°F)		36°C
(97°F)		38°C
(100°F)		40°C
(105°F)		39°C
(103°F)		38°C
(100°F)
Mean maximum36°C
(96°F)		38°C
(101°F)		42°C
(108°F)		43°C
(110°F)		43°C
(110°F)		41°C
(106°F)		38°C
(100°F)		35°C
(96°F)		37°C
(98°F)		39°C
(102°F)		39°C
(102°F)		36°C
(97°F)
Average high32°C
(89°F)		34°C
(94°F)		39°C
(103°F)		41°C
(107°F)		40°C
(105°F)		37°C
(99°F)		33°C
(92°F)		32°C
(89°F)		33°C
(92°F)		36°C
(98°F)		37°C
(99°F)		33°C
(92°F)
Daily mean24°C
(76°F)		27°C
(81°F)		32°C
(89°F)		35°C
(94°F)		34°C
(94°F)		32°C
(90°F)		29°C
(85°F)		28°C
(82°F)		29°C
(84°F)		30°C
(87°F)		28°C
(83°F)		25°C
(78°F)
Average low17°C
(64°F)		20°C
(69°F)		25°C
(77°F)		28°C
(82°F)		29°C
(85°F)		27°C
(81°F)		25°C
(78°F)		24°C
(76°F)		25°C
(77°F)		25°C
(77°F)		21°C
(70°F)		18°C
(65°F)
Mean minimum14°C
(58°F)		17°C
(62°F)		20°C
(69°F)		23°C
(74°F)		25°C
(78°F)		25°C
(77°F)		23°C
(73°F)		22°C
(72°F)		23°C
(73°F)		21°C
(70°F)		18°C
(65°F)		16°C
(61°F)
Minimum13°C
(57°F)		15°C
(59°F)		19°C
(66°F)		22°C
(71°F)		23°C
(75°F)		24°C
(75°F)		22°C
(73°F)		21°C
(70°F)		22°C
(72°F)		19°C
(66°F)		17°C
(63°F)		15°C
(59°F)

Compare climate in Say with other places

Compare temperature, precipitation, sunshine, UV index in Say, Niger with other places around the world.

Monthly average precipitation in Say, Niger

Say usually has the most precipitation in July, August and September, with an average of 12 rainy days and 105 mm (4.1 inches) of precipitation per month. The driest months in Say are January, November and December. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Say. 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)1 (0.0)1 (0.0)8 (0.3)32 (1.3)54 (2.1)185 (7.3)75 (2.9)20 (0.8)0 (0.0)0 (0.0)
Average precipitation days (≥ 1 mm)00001712188400

Monthly sunshine hours in Say, Niger

The sunniest months in Say are May, July and August, when the sun shines an average of 11 hours 12 minutes a day. Least sunny months in Say: January, February and November receive an average of 9 hours 53 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Say. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours268303334329347339353341325331319330
Mean daily daylight hours11h 26m11h 42m12h 3m12h 25m12h 43m12h 52m12h 47m12h 31m12h 10m11h 48m11h 30m11h 21m

Solar UV radiation in Say, Niger

Say experiences the highest level of ultraviolet (UV) radiation in March, July and August, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure. October, November and December are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly Say UV Index data.

Average daily maximum UV levels by month for Say. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)111213121212131412111010