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Monthly climate in Onou, Micronesia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Onou 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 (77 °F) or can rise to as high as 30 °C (85 °F). The average annual precipitation amounts to about 2580 mm (101.6 inches) and receives 298 rainy days on the 1 mm (0.04 inches) threshold annually. Onou enjoys an average of 3359 hours of sunshine throughout the year, and daylight varies from 11 hours 36 minutes to 12 hours 36 minutes per day.

Monthly average temperatures in Onou, Micronesia

The warmest months in Onou 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, Onou 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 Onou. 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
(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)		30°C
(85°F)		29°C
(85°F)		29°C
(85°F)
Mean maximum29°C
(84°F)		28°C
(83°F)		28°C
(83°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
(84°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 mean27°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
(79°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
(79°F)		26°C
(79°F)		26°C
(79°F)
Minimum25°C
(77°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)		25°C
(78°F)		25°C
(78°F)		26°C
(78°F)		26°C
(79°F)		26°C
(79°F)

Compare climate in Onou with other places

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

Monthly average precipitation in Onou, Micronesia

Onou usually has the most precipitation in July, August and December, with an average of 28 rainy days and 273 mm (10.7 inches) of precipitation per month. The driest months in Onou are February, March and April. On average, 126 mm (4.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Onou. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)167 (6.6)96 (3.8)151 (5.9)130 (5.1)203 (8.0)262 (10.3)266 (10.5)276 (10.9)246 (9.7)252 (9.9)256 (10.1)277 (10.9)
Average precipitation days (≥ 1 mm)181721222528292827282827

Monthly sunshine hours in Onou, Micronesia

The sunniest months in Onou are March, April and July, when the sun shines an average of 9 hours 45 minutes a day. Least sunny months in Onou: January, February and November receive an average of 8 hours 27 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Onou. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours231265300298295288298285275281264272
Mean daily daylight hours11h 39m11h 49m12h 3m12h 18m12h 30m12h 36m12h 33m12h 23m12h 9m11h 54m11h 42m11h 36m

Solar UV radiation in Onou, Micronesia

Onou 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 Onou UV Index data.

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