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Monthly climate in Halong, Indonesia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Halong features a tropical rainforest climate (Af). Temperatures typically range between 25 °C (78 °F) and 26 °C (80 °F) through the year, but rarely can drop to 19 °C (66 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 2426 mm (95.5 inches) and receives 291 rainy days on the 1 mm (0.04 inches) threshold annually. Halong enjoys an average of 3117 hours of sunshine throughout the year, and daylight varies from 11 hours 59 minutes to 12 hours 14 minutes per day.

Monthly average temperatures in Halong, Indonesia

The warmest months in Halong are April, May and October, with daily mean temperatures ranging from 26 to 26 °C (79 - 80 °F) throughout the day. The coldest temperatures usually occur in January, July and August, when daily mean temperatures range from 25 to 26 °C (78 - 78 °F) throughout the day. On average each year, Halong 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 Halong. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum33°C
(92°F)		34°C
(93°F)		34°C
(93°F)		34°C
(93°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		34°C
(94°F)		35°C
(96°F)		35°C
(95°F)		35°C
(95°F)		33°C
(92°F)
Mean maximum33°C
(91°F)		33°C
(91°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		32°C
(90°F)		32°C
(90°F)		33°C
(91°F)		33°C
(92°F)		34°C
(93°F)		33°C
(92°F)		32°C
(91°F)
Average high30°C
(86°F)		30°C
(87°F)		30°C
(87°F)		31°C
(87°F)		31°C
(88°F)		30°C
(86°F)		30°C
(87°F)		31°C
(87°F)		31°C
(89°F)		31°C
(88°F)		31°C
(87°F)		30°C
(86°F)
Daily mean26°C
(78°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(80°F)		26°C
(79°F)		25°C
(78°F)		26°C
(78°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)
Average low23°C
(73°F)		23°C
(73°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(73°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		23°C
(73°F)		23°C
(74°F)		23°C
(73°F)
Mean minimum22°C
(71°F)		22°C
(71°F)		22°C
(72°F)		22°C
(72°F)		22°C
(73°F)		22°C
(71°F)		21°C
(69°F)		20°C
(69°F)		20°C
(69°F)		21°C
(71°F)		22°C
(72°F)		22°C
(72°F)
Minimum21°C
(71°F)		21°C
(70°F)		21°C
(71°F)		21°C
(71°F)		22°C
(72°F)		21°C
(70°F)		20°C
(67°F)		19°C
(66°F)		19°C
(67°F)		21°C
(70°F)		21°C
(70°F)		21°C
(71°F)

Compare climate in Halong with other places

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

Monthly average precipitation in Halong, Indonesia

Halong usually has the most precipitation in March, April and November, with an average of 27 rainy days and 278 mm (10.9 inches) of precipitation per month. The driest months in Halong are July, August and September. On average, 131 mm (5.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Halong. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)215 (8.5)212 (8.4)313 (12.3)251 (9.9)212 (8.3)158 (6.2)133 (5.2)119 (4.7)142 (5.6)188 (7.4)270 (10.6)212 (8.3)
Average precipitation days (≥ 1 mm)232429272824201918242728

Monthly sunshine hours in Halong, Indonesia

The sunniest months in Halong are July, August and September, when the sun shines an average of 9 hours 17 minutes a day. Least sunny months in Halong: January, February and November receive an average of 7 hours 30 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Halong. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours203235261251276269287288277274236254
Mean daily daylight hours12h 13m12h 10m12h 6m12h 2m11h 59m11h 59m11h 59m12h 1m12h 4m12h 8m12h 12m12h 14m

Solar UV radiation in Halong, Indonesia

Halong experiences the highest level of ultraviolet (UV) radiation in February, March and October, 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 14. For more detailed information, check out our hourly Halong UV Index data.

Average daily maximum UV levels by month for Halong. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151616151412121415161414