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Monthly climate in Onoun, Micronesia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Onoun features a tropical rainforest climate (Af). Temperatures typically range between 27 °C (81 °F) and 28 °C (82 °F) through the year, but rarely can drop to 25 °C (78 °F) or can rise to as high as 30 °C (86 °F). The average annual precipitation amounts to about 2649 mm (104.3 inches) and receives 297 rainy days on the 1 mm (0.04 inches) threshold annually. Onoun enjoys an average of 3329 hours of sunshine throughout the year, and daylight varies from 11 hours 37 minutes to 12 hours 36 minutes per day.

Monthly average temperatures in Onoun, Micronesia

The warmest months in Onoun are May, October and November, with daily mean temperatures ranging from 28 to 28 °C (82 - 82 °F) throughout the day. The coldest temperatures usually occur in February, March and July, when daily mean temperatures range from 27 to 27 °C (81 - 82 °F) throughout the day. On average each year, Onoun 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 Onoun. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum29°C
(85°F)		29°C
(84°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		30°C
(86°F)		29°C
(85°F)		29°C
(85°F)
Mean maximum29°C
(84°F)		29°C
(84°F)		29°C
(84°F)		29°C
(84°F)		29°C
(85°F)		29°C
(84°F)		29°C
(84°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)
Average high28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(84°F)		29°C
(84°F)		29°C
(84°F)		28°C
(83°F)
Daily mean28°C
(82°F)		27°C
(82°F)		27°C
(81°F)		27°C
(82°F)		28°C
(82°F)		27°C
(82°F)		27°C
(82°F)		27°C
(82°F)		28°C
(82°F)		28°C
(82°F)		28°C
(82°F)		28°C
(82°F)
Average low27°C
(80°F)		27°C
(80°F)		27°C
(80°F)		27°C
(80°F)		27°C
(80°F)		26°C
(80°F)		26°C
(80°F)		26°C
(80°F)		27°C
(80°F)		27°C
(80°F)		27°C
(80°F)		27°C
(80°F)
Mean minimum26°C
(78°F)		26°C
(79°F)		26°C
(78°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(78°F)		26°C
(78°F)		26°C
(78°F)		26°C
(78°F)		26°C
(79°F)		26°C
(79°F)
Minimum25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		26°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		26°C
(79°F)		26°C
(78°F)

Compare climate in Onoun with other places

Compare temperature, precipitation, sunshine, UV index in Onoun, Micronesia with other places around the world.

Monthly average precipitation in Onoun, Micronesia

Onoun usually has the most precipitation in June, August and December, with an average of 27 rainy days and 273 mm (10.7 inches) of precipitation per month. The driest months in Onoun are February, March and April. On average, 144 mm (5.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Onoun. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)173 (6.8)102 (4.0)170 (6.7)160 (6.3)213 (8.4)274 (10.8)269 (10.6)273 (10.8)243 (9.6)248 (9.8)251 (9.9)272 (10.7)
Average precipitation days (≥ 1 mm)191822232528292725282726

Monthly sunshine hours in Onoun, Micronesia

The sunniest months in Onoun are March, April and July, when the sun shines an average of 9 hours 38 minutes a day. Least sunny months in Onoun: January, February and November receive an average of 8 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Onoun. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours230262298293290287295286271277263271
Mean daily daylight hours11h 40m11h 50m12h 3m12h 18m12h 30m12h 36m12h 33m12h 22m12h 8m11h 55m11h 43m11h 37m

Solar UV radiation in Onoun, Micronesia

Onoun experiences the highest level of ultraviolet (UV) radiation in March, April and September, when the maximum UV index can reach values of 14 - 16, which corresponds to the Extreme category of sun exposure. January, November and December 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 Onoun UV Index data.

Average daily maximum UV levels by month for Onoun. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)131416161414141414141311