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Monthly climate in Bayan, Indonesia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Bayan features a tropical savanna climate (Aw). Temperatures typically range between 25 °C (77 °F) and 27 °C (81 °F) through the year, but rarely can drop to 19 °C (67 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 2343 mm (92.2 inches) and receives 169 rainy days on the 1 mm (0.04 inches) threshold annually. Bayan enjoys an average of 3519 hours of sunshine throughout the year, and daylight varies from 11 hours 38 minutes to 12 hours 34 minutes per day.

Monthly average temperatures in Bayan, Indonesia

The warmest months in Bayan are May, October and November, with daily mean temperatures ranging from 26 to 27 °C (79 - 81 °F) throughout the day. The coldest temperatures usually occur in February, July and August, when daily mean temperatures range from 25 to 25 °C (77 - 78 °F) throughout the day. On average each year, Bayan 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 Bayan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum30°C
(87°F)		30°C
(86°F)		30°C
(87°F)		31°C
(87°F)		31°C
(88°F)		30°C
(87°F)		30°C
(87°F)		31°C
(88°F)		32°C
(89°F)		32°C
(90°F)		33°C
(92°F)		33°C
(91°F)
Mean maximum29°C
(85°F)		29°C
(85°F)		30°C
(86°F)		30°C
(87°F)		30°C
(87°F)		29°C
(85°F)		30°C
(86°F)		30°C
(87°F)		31°C
(88°F)		32°C
(90°F)		31°C
(89°F)		31°C
(87°F)
Average high28°C
(82°F)		28°C
(82°F)		28°C
(83°F)		29°C
(84°F)		29°C
(85°F)		29°C
(84°F)		29°C
(84°F)		29°C
(84°F)		30°C
(85°F)		30°C
(87°F)		30°C
(86°F)		29°C
(84°F)
Daily mean25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		26°C
(79°F)		26°C
(79°F)		25°C
(78°F)		25°C
(77°F)		25°C
(78°F)		26°C
(79°F)		27°C
(81°F)		26°C
(80°F)		26°C
(79°F)
Average low24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		23°C
(74°F)		22°C
(72°F)		22°C
(72°F)		23°C
(74°F)		24°C
(75°F)		24°C
(76°F)		24°C
(76°F)
Mean minimum23°C
(74°F)		23°C
(73°F)		23°C
(73°F)		23°C
(73°F)		23°C
(73°F)		22°C
(71°F)		20°C
(69°F)		20°C
(69°F)		21°C
(71°F)		22°C
(73°F)		23°C
(74°F)		23°C
(74°F)
Minimum23°C
(73°F)		23°C
(73°F)		22°C
(73°F)		22°C
(72°F)		22°C
(72°F)		20°C
(69°F)		19°C
(67°F)		19°C
(67°F)		20°C
(68°F)		22°C
(72°F)		23°C
(74°F)		23°C
(73°F)

Compare climate in Bayan with other places

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

Monthly average precipitation in Bayan, Indonesia

Bayan usually has the most precipitation in January, February and March, with an average of 27 rainy days and 457 mm (18.0 inches) of precipitation per month. The driest months in Bayan are July, August and September. On average, 8 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bayan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)438 (17.2)478 (18.8)455 (17.9)183 (7.2)53 (2.1)27 (1.1)8 (0.3)4 (0.2)12 (0.5)23 (0.9)261 (10.3)399 (15.7)
Average precipitation days (≥ 1 mm)252730198721141728

Monthly sunshine hours in Bayan, Indonesia

The sunniest months in Bayan are May, August and October, when the sun shines an average of 10 hours 6 minutes a day. Least sunny months in Bayan: January, February and December receive an average of 8 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bayan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours228270292294308295308310305319293290
Mean daily daylight hours12h 31m12h 21m12h 7m11h 54m11h 43m11h 38m11h 40m11h 50m12h 2m12h 16m12h 28m12h 34m

Solar UV radiation in Bayan, Indonesia

Bayan experiences the highest level of ultraviolet (UV) radiation in February, March and April, when the maximum UV index can reach values of 15 - 16, which corresponds to the Extreme category of sun exposure. May, June and July 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 Bayan UV Index data.

Average daily maximum UV levels by month for Bayan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151616151311121315151515