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Monthly climate in Athi River, Kenya

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Athi River features a oceanic climate (Cfb). Temperatures typically range between 18 °C (64 °F) and 21 °C (71 °F) through the year, but rarely can drop to 10 °C (50 °F) or can rise to as high as 31 °C (89 °F). The average annual precipitation amounts to about 856 mm (33.7 inches) and receives 142 rainy days on the 1 mm (0.04 inches) threshold annually. Athi River enjoys an average of 3916 hours of sunshine throughout the year, and daylight varies from 12 hours 1 minutes to 12 hours 11 minutes per day.

Monthly average temperatures in Athi River, Kenya

The warmest months in Athi River are February, March and April, with daily mean temperatures ranging from 21 to 21 °C (69 - 71 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 18 to 18 °C (64 - 65 °F) throughout the day. On average each year, Athi River experiences 160 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 Athi River. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum29°C
(85°F)		30°C
(87°F)		31°C
(89°F)		31°C
(88°F)		28°C
(82°F)		27°C
(80°F)		28°C
(82°F)		30°C
(86°F)		28°C
(84°F)		30°C
(85°F)		28°C
(84°F)		27°C
(82°F)
Mean maximum28°C
(83°F)		29°C
(85°F)		30°C
(86°F)		28°C
(83°F)		27°C
(80°F)		25°C
(78°F)		26°C
(79°F)		27°C
(82°F)		28°C
(83°F)		29°C
(84°F)		27°C
(81°F)		26°C
(80°F)
Average high26°C
(78°F)		26°C
(80°F)		27°C
(81°F)		26°C
(79°F)		24°C
(76°F)		23°C
(74°F)		23°C
(73°F)		23°C
(75°F)		25°C
(77°F)		26°C
(78°F)		25°C
(77°F)		24°C
(76°F)
Daily mean20°C
(68°F)		21°C
(70°F)		21°C
(71°F)		21°C
(69°F)		19°C
(67°F)		18°C
(65°F)		18°C
(64°F)		18°C
(65°F)		19°C
(67°F)		20°C
(69°F)		20°C
(68°F)		20°C
(67°F)
Average low15°C
(60°F)		16°C
(61°F)		16°C
(62°F)		17°C
(63°F)		16°C
(61°F)		15°C
(59°F)		14°C
(57°F)		14°C
(57°F)		15°C
(58°F)		16°C
(61°F)		16°C
(61°F)		16°C
(61°F)
Mean minimum13°C
(56°F)		13°C
(56°F)		14°C
(58°F)		16°C
(60°F)		14°C
(57°F)		13°C
(56°F)		11°C
(53°F)		11°C
(52°F)		12°C
(54°F)		14°C
(57°F)		14°C
(58°F)		13°C
(57°F)
Minimum12°C
(54°F)		13°C
(55°F)		14°C
(57°F)		15°C
(59°F)		13°C
(55°F)		12°C
(53°F)		10°C
(51°F)		10°C
(50°F)		11°C
(52°F)		12°C
(54°F)		12°C
(54°F)		12°C
(55°F)

Compare climate in Athi River with other places

Compare temperature, precipitation, sunshine, UV index in Athi River, Kenya with other places around the world.

Monthly average precipitation in Athi River, Kenya

Athi River usually has the most precipitation in April, May and November, with an average of 20 rainy days and 135 mm (5.3 inches) of precipitation per month. The driest months in Athi River are July, August and September. On average, 22 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Athi River. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)42 (1.7)46 (1.8)94 (3.7)174 (6.8)112 (4.4)39 (1.5)19 (0.7)19 (0.7)28 (1.1)62 (2.4)118 (4.7)105 (4.2)
Average precipitation days (≥ 1 mm)7101524198344121917

Monthly sunshine hours in Athi River, Kenya

The sunniest months in Athi River are May, October and December, when the sun shines an average of 11 hours 6 minutes a day. Least sunny months in Athi River: January, February and June receive an average of 10 hours 9 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Athi River. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours288311337317339314315331332347332346
Mean daily daylight hours12h 10m12h 8m12h 5m12h 3m12h 2m12h 1m12h 2m12h 3m12h 5m12h 7m12h 10m12h 11m

Solar UV radiation in Athi River, Kenya

Athi River experiences the highest level of ultraviolet (UV) radiation in February, March and April, when the maximum UV index can reach values of 16 - 16, which corresponds to the Extreme category of sun exposure. June, July and November 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 Athi River UV Index data.

Average daily maximum UV levels by month for Athi River. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151616161412121315141314