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Monthly climate in Isiro, Democratic Republic of the Congo

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Isiro features a tropical monsoon climate (Am). Temperatures typically range between 23 °C (73 °F) and 26 °C (80 °F) through the year, but rarely can drop to 17 °C (63 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 1627 mm (64.0 inches) and receives 230 rainy days on the 1 mm (0.04 inches) threshold annually. Isiro enjoys an average of 3585 hours of sunshine throughout the year, and daylight varies from 11 hours 57 minutes to 12 hours 15 minutes per day.

Monthly average temperatures in Isiro, Democratic Republic of the Congo

The warmest months in Isiro are January, February and March, with daily mean temperatures ranging from 25 to 26 °C (78 - 80 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 23 to 23 °C (73 - 73 °F) throughout the day. On average each year, Isiro experiences 312 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 Isiro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum36°C
(96°F)		38°C
(101°F)		38°C
(100°F)		36°C
(97°F)		32°C
(90°F)		31°C
(88°F)		30°C
(87°F)		31°C
(87°F)		32°C
(89°F)		31°C
(89°F)		32°C
(89°F)		35°C
(95°F)
Mean maximum35°C
(95°F)		37°C
(98°F)		36°C
(97°F)		33°C
(92°F)		31°C
(89°F)		30°C
(87°F)		29°C
(85°F)		30°C
(86°F)		30°C
(87°F)		30°C
(87°F)		31°C
(88°F)		33°C
(92°F)
Average high32°C
(91°F)		33°C
(92°F)		31°C
(89°F)		29°C
(85°F)		28°C
(83°F)		28°C
(82°F)		27°C
(81°F)		27°C
(81°F)		28°C
(82°F)		28°C
(82°F)		28°C
(83°F)		30°C
(87°F)
Daily mean26°C
(78°F)		26°C
(80°F)		25°C
(78°F)		24°C
(76°F)		24°C
(75°F)		23°C
(74°F)		23°C
(73°F)		23°C
(73°F)		23°C
(73°F)		23°C
(74°F)		23°C
(74°F)		24°C
(76°F)
Average low20°C
(69°F)		21°C
(71°F)		22°C
(71°F)		21°C
(70°F)		21°C
(70°F)		20°C
(69°F)		20°C
(68°F)		20°C
(68°F)		20°C
(68°F)		20°C
(68°F)		20°C
(69°F)		20°C
(69°F)
Mean minimum18°C
(65°F)		19°C
(66°F)		20°C
(68°F)		20°C
(68°F)		20°C
(68°F)		19°C
(67°F)		19°C
(66°F)		18°C
(65°F)		19°C
(66°F)		19°C
(67°F)		19°C
(67°F)		19°C
(66°F)
Minimum17°C
(64°F)		17°C
(63°F)		20°C
(68°F)		19°C
(67°F)		19°C
(67°F)		18°C
(65°F)		18°C
(65°F)		18°C
(64°F)		18°C
(65°F)		19°C
(66°F)		19°C
(66°F)		19°C
(66°F)

Compare climate in Isiro with other places

Compare temperature, precipitation, sunshine, UV index in Isiro, Democratic Republic of the Congo with other places around the world.

Monthly average precipitation in Isiro, Democratic Republic of the Congo

Isiro usually has the most precipitation in August, September and October, with an average of 26 rainy days and 202 mm (8.0 inches) of precipitation per month. The driest months in Isiro are January, February and December. On average, 32 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Isiro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)12 (0.5)35 (1.4)120 (4.7)164 (6.5)159 (6.3)164 (6.5)144 (5.7)174 (6.8)218 (8.6)215 (8.5)172 (6.8)49 (1.9)
Average precipitation days (≥ 1 mm)361823252325262627226

Monthly sunshine hours in Isiro, Democratic Republic of the Congo

The sunniest months in Isiro are March, April and December, when the sun shines an average of 10 hours 26 minutes a day. Least sunny months in Isiro: January, September and October receive an average of 9 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Isiro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours272296318310301292288294286285306331
Mean daily daylight hours11h 58m12h 1m12h 5m12h 9m12h 13m12h 15m12h 14m12h 11m12h 6m12h 2m11h 58m11h 57m

Solar UV radiation in Isiro, Democratic Republic of the Congo

Isiro experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 14 - 15, 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 11. For more detailed information, check out our hourly Isiro UV Index data.

Average daily maximum UV levels by month for Isiro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)121214151411111313131211