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Monthly climate in Isimu, Indonesia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Isimu features a tropical rainforest climate (Af). Temperatures typically range between 26 °C (80 °F) and 27 °C (81 °F) through the year, but rarely can drop to 20 °C (67 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 2932 mm (115.4 inches) and receives 272 rainy days on the 1 mm (0.04 inches) threshold annually. Isimu enjoys an average of 3312 hours of sunshine throughout the year, and daylight varies from 12 hours 4 minutes to 12 hours 8 minutes per day.

Monthly average temperatures in Isimu, Indonesia

The warmest months in Isimu are September, October and November, with daily mean temperatures ranging from 27 to 27 °C (81 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and July, when daily mean temperatures range from 26 to 26 °C (80 - 80 °F) throughout the day. On average each year, Isimu 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 Isimu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum32°C
(90°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		32°C
(90°F)		33°C
(91°F)		34°C
(94°F)		35°C
(95°F)		35°C
(95°F)		34°C
(94°F)		33°C
(92°F)
Mean maximum32°C
(89°F)		32°C
(90°F)		32°C
(90°F)		32°C
(91°F)		32°C
(90°F)		31°C
(89°F)		32°C
(90°F)		33°C
(91°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		33°C
(91°F)
Average high30°C
(86°F)		30°C
(87°F)		31°C
(87°F)		31°C
(88°F)		31°C
(88°F)		30°C
(86°F)		30°C
(86°F)		31°C
(88°F)		32°C
(89°F)		32°C
(90°F)		32°C
(89°F)		31°C
(88°F)
Daily mean26°C
(80°F)		26°C
(80°F)		27°C
(80°F)		27°C
(80°F)		27°C
(81°F)		26°C
(80°F)		26°C
(80°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)
Average low24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(76°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		24°C
(76°F)
Mean minimum23°C
(74°F)		22°C
(73°F)		23°C
(73°F)		23°C
(73°F)		23°C
(74°F)		23°C
(73°F)		22°C
(72°F)		22°C
(72°F)		22°C
(71°F)		22°C
(72°F)		22°C
(73°F)		23°C
(74°F)
Minimum23°C
(73°F)		22°C
(71°F)		22°C
(72°F)		21°C
(71°F)		23°C
(73°F)		22°C
(72°F)		22°C
(72°F)		21°C
(69°F)		20°C
(67°F)		22°C
(72°F)		21°C
(71°F)		23°C
(73°F)

Compare climate in Isimu with other places

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

Monthly average precipitation in Isimu, Indonesia

Isimu usually has the most precipitation in April, May and November, with an average of 25 rainy days and 323 mm (12.7 inches) of precipitation per month. The driest months in Isimu are August, September and October. On average, 164 mm (6.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Isimu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)254 (10.0)207 (8.2)281 (11.1)365 (14.4)293 (11.6)250 (9.8)202 (7.9)134 (5.3)168 (6.6)189 (7.4)312 (12.3)277 (10.9)
Average precipitation days (≥ 1 mm)232425252724191516212528

Monthly sunshine hours in Isimu, Indonesia

The sunniest months in Isimu are July, August and October, when the sun shines an average of 9 hours 33 minutes a day. Least sunny months in Isimu: January, February and April receive an average of 8 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Isimu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours217255284270291275291301286294271270
Mean daily daylight hours12h 4m12h 5m12h 5m12h 6m12h 7m12h 8m12h 8m12h 7m12h 5m12h 5m12h 4m12h 4m

Solar UV radiation in Isimu, Indonesia

Isimu experiences the highest level of ultraviolet (UV) radiation in February, March and April, when the maximum UV index can reach values of 16 - 17, 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 Isimu UV Index data.

Average daily maximum UV levels by month for Isimu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151617161412131414141313