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Monthly climate in Kumai, Indonesia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Kumai features a tropical rainforest climate (Af). Temperatures typically range between 27 °C (80 °F) and 27 °C (82 °F) through the year, but rarely can drop to 22 °C (72 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 2883 mm (113.5 inches) and receives 291 rainy days on the 1 mm (0.04 inches) threshold annually. Kumai enjoys an average of 3288 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 Kumai, Indonesia

The warmest months in Kumai are April, May and June, with daily mean temperatures ranging from 27 to 27 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, July and December, when daily mean temperatures range from 27 to 27 °C (80 - 80 °F) throughout the day. On average each year, Kumai 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 Kumai. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum33°C
(91°F)		33°C
(91°F)		33°C
(92°F)		33°C
(91°F)		33°C
(91°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		33°C
(92°F)		33°C
(91°F)		33°C
(92°F)		33°C
(91°F)
Mean maximum32°C
(90°F)		32°C
(90°F)		32°C
(91°F)		32°C
(90°F)		33°C
(91°F)		32°C
(90°F)		31°C
(89°F)		32°C
(89°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)
Average high30°C
(86°F)		30°C
(87°F)		30°C
(87°F)		31°C
(87°F)		31°C
(87°F)		30°C
(87°F)		30°C
(86°F)		30°C
(87°F)		31°C
(87°F)		31°C
(87°F)		30°C
(87°F)		30°C
(86°F)
Daily mean27°C
(80°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		27°C
(82°F)		27°C
(81°F)		27°C
(80°F)		27°C
(80°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		27°C
(80°F)
Average low25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(78°F)		25°C
(77°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)
Mean minimum24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)
Minimum24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		23°C
(74°F)		23°C
(73°F)		22°C
(73°F)		22°C
(72°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)

Compare climate in Kumai with other places

Compare temperature, precipitation, sunshine, UV index in Kumai, Indonesia with other places around the world.

Monthly average precipitation in Kumai, Indonesia

Kumai usually has the most precipitation in April, October and November, with an average of 27 rainy days and 298 mm (11.7 inches) of precipitation per month. The driest months in Kumai are July, August and September. On average, 160 mm (6.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kumai. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)236 (9.3)240 (9.4)256 (10.1)284 (11.2)268 (10.5)240 (9.4)163 (6.4)150 (5.9)168 (6.6)315 (12.4)294 (11.6)270 (10.6)
Average precipitation days (≥ 1 mm)232426272723221719262829

Monthly sunshine hours in Kumai, Indonesia

The sunniest months in Kumai are May, July and August, when the sun shines an average of 9 hours 40 minutes a day. Least sunny months in Kumai: January, February and November receive an average of 8 hours 2 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kumai. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours219255278274290287304304283281248260
Mean daily daylight hours12h 14m12h 10m12h 6m12h 2m11h 58m11h 57m11h 58m12h 0m12h 4m12h 9m12h 13m12h 15m

Solar UV radiation in Kumai, Indonesia

Kumai experiences the highest level of ultraviolet (UV) radiation in February, March and September, when the maximum UV index can reach values of 15 - 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 Kumai UV Index data.

Average daily maximum UV levels by month for Kumai. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)141616141412121315151413