nomadseason

Monthly climate in Bonak, Indonesia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Bonak 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 16 °C (61 °F) or can rise to as high as 36 °C (98 °F). The average annual precipitation amounts to about 1129 mm (44.4 inches) and receives 148 rainy days on the 1 mm (0.04 inches) threshold annually. Bonak enjoys an average of 3512 hours of sunshine throughout the year, and daylight varies from 11 hours 32 minutes to 12 hours 41 minutes per day.

Monthly average temperatures in Bonak, Indonesia

The warmest months in Bonak are October, November and December, with daily mean temperatures ranging from 27 to 27 °C (80 - 81 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 25 to 26 °C (77 - 78 °F) throughout the day. On average each year, Bonak experiences 328 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 Bonak. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum34°C
(93°F)		33°C
(92°F)		33°C
(92°F)		34°C
(94°F)		34°C
(93°F)		34°C
(93°F)		33°C
(92°F)		34°C
(93°F)		35°C
(96°F)		35°C
(96°F)		36°C
(98°F)		34°C
(94°F)
Mean maximum32°C
(90°F)		31°C
(89°F)		31°C
(89°F)		32°C
(90°F)		33°C
(91°F)		33°C
(91°F)		33°C
(91°F)		33°C
(92°F)		34°C
(94°F)		35°C
(95°F)		35°C
(95°F)		32°C
(91°F)
Average high29°C
(85°F)		29°C
(85°F)		30°C
(86°F)		30°C
(87°F)		31°C
(88°F)		31°C
(88°F)		31°C
(88°F)		32°C
(89°F)		33°C
(91°F)		33°C
(92°F)		33°C
(91°F)		30°C
(87°F)
Daily mean26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(78°F)		25°C
(77°F)		25°C
(78°F)		26°C
(80°F)		27°C
(81°F)		27°C
(81°F)		27°C
(80°F)
Average low24°C
(75°F)		23°C
(74°F)		23°C
(74°F)		22°C
(72°F)		22°C
(72°F)		21°C
(71°F)		20°C
(69°F)		20°C
(69°F)		21°C
(69°F)		22°C
(72°F)		23°C
(74°F)		24°C
(75°F)
Mean minimum22°C
(72°F)		22°C
(72°F)		21°C
(71°F)		19°C
(67°F)		19°C
(67°F)		19°C
(66°F)		17°C
(63°F)		18°C
(64°F)		18°C
(65°F)		20°C
(68°F)		22°C
(71°F)		22°C
(72°F)
Minimum21°C
(71°F)		20°C
(69°F)		21°C
(70°F)		17°C
(63°F)		18°C
(65°F)		16°C
(62°F)		16°C
(62°F)		17°C
(63°F)		16°C
(61°F)		18°C
(64°F)		20°C
(69°F)		22°C
(71°F)

Compare climate in Bonak with other places

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

Monthly average precipitation in Bonak, Indonesia

Bonak usually has the most precipitation in January, March and December, with an average of 24 rainy days and 196 mm (7.7 inches) of precipitation per month. The driest months in Bonak are July, August and September. On average, 7 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bonak. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)202 (8.0)150 (5.9)178 (7.0)129 (5.1)40 (1.6)10 (0.4)8 (0.3)5 (0.2)9 (0.3)43 (1.7)147 (5.8)209 (8.2)
Average precipitation days (≥ 1 mm)222526136101291924

Monthly sunshine hours in Bonak, Indonesia

The sunniest months in Bonak are August, October and November, when the sun shines an average of 10 hours 19 minutes a day. Least sunny months in Bonak: January, February and April 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 Bonak. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours225264287284301291304312309327309294
Mean daily daylight hours12h 37m12h 24m12h 8m11h 51m11h 38m11h 32m11h 35m11h 46m12h 2m12h 18m12h 33m12h 41m

Solar UV radiation in Bonak, Indonesia

Bonak 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. May, June and July are in the Very High / 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 Bonak UV Index data.

Average daily maximum UV levels by month for Bonak. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151616141210111315161515