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Monthly climate in Belawan, Indonesia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Belawan features a tropical rainforest climate (Af). Temperatures typically range between 27 °C (81 °F) and 28 °C (83 °F) through the year, but rarely can drop to 22 °C (72 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 3021 mm (118.9 inches) and receives 304 rainy days on the 1 mm (0.04 inches) threshold annually. Belawan enjoys an average of 3553 hours of sunshine throughout the year, and daylight varies from 11 hours 54 minutes to 12 hours 18 minutes per day.

Monthly average temperatures in Belawan, Indonesia

The warmest months in Belawan are April, May and June, with daily mean temperatures ranging from 28 to 28 °C (83 - 83 °F) throughout the day. The coldest temperatures usually occur in January, November and December, when daily mean temperatures range from 27 to 27 °C (81 - 81 °F) throughout the day. On average each year, Belawan 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 Belawan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum33°C
(91°F)		33°C
(92°F)		35°C
(96°F)		35°C
(95°F)		34°C
(94°F)		35°C
(94°F)		34°C
(93°F)		34°C
(93°F)		33°C
(92°F)		34°C
(93°F)		33°C
(92°F)		33°C
(91°F)
Mean maximum32°C
(90°F)		33°C
(91°F)		34°C
(93°F)		34°C
(94°F)		34°C
(93°F)		34°C
(93°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		33°C
(91°F)		32°C
(90°F)
Average high31°C
(87°F)		31°C
(89°F)		32°C
(90°F)		32°C
(91°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		31°C
(89°F)		31°C
(88°F)		31°C
(87°F)		30°C
(87°F)
Daily mean27°C
(81°F)		27°C
(82°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(82°F)		28°C
(82°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)
Average low24°C
(76°F)		24°C
(76°F)		25°C
(77°F)		25°C
(77°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		24°C
(76°F)		24°C
(76°F)		25°C
(76°F)		24°C
(76°F)
Mean minimum23°C
(73°F)		23°C
(73°F)		24°C
(75°F)		24°C
(75°F)		24°C
(76°F)		24°C
(75°F)		24°C
(75°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		23°C
(74°F)
Minimum22°C
(72°F)		22°C
(72°F)		23°C
(73°F)		24°C
(75°F)		24°C
(75°F)		23°C
(73°F)		23°C
(74°F)		23°C
(73°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)

Compare climate in Belawan with other places

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

Monthly average precipitation in Belawan, Indonesia

Belawan usually has the most precipitation in September, November and December, with an average of 28 rainy days and 346 mm (13.6 inches) of precipitation per month. The driest months in Belawan are January, February and March. On average, 154 mm (6.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Belawan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)193 (7.6)116 (4.6)152 (6.0)242 (9.5)315 (12.4)196 (7.7)195 (7.7)254 (10.0)332 (13.1)319 (12.6)379 (14.9)328 (12.9)
Average precipitation days (≥ 1 mm)212025262924222527272929

Monthly sunshine hours in Belawan, Indonesia

The sunniest months in Belawan are March, July and August, when the sun shines an average of 10 hours 19 minutes a day. Least sunny months in Belawan: January, November and December receive an average of 8 hours 36 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Belawan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours246301322297298307320316298298255289
Mean daily daylight hours11h 55m11h 59m12h 4m12h 11m12h 16m12h 18m12h 17m12h 12m12h 7m12h 1m11h 56m11h 54m

Solar UV radiation in Belawan, Indonesia

Belawan experiences the highest level of ultraviolet (UV) radiation in February, March and April, when the maximum UV index can reach values of 15 - 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 12. For more detailed information, check out our hourly Belawan UV Index data.

Average daily maximum UV levels by month for Belawan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)131515151412121314141312