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Weather & Climate in Onou, Micronesia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Onou has a warm climate with an average annual temperature of 83°F (28°C). Winters average 82°F in January while summers reach 82°F in July / relatively mild seasonal variation. The area gets 312 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 139.3 inches (wetter than the 38-inch national average). The city sits at an elevation of 36 feet.
Temperature
82°F Jan (28°C)
82°F Jul (28°C)
| Annual Average | 82.6°F |
| 53% above US avg | |
| January Average | 82°F (28°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 312 days/yr |
Geography
| Elevation | 36 ft (11 m) |
| Area | 7.2 sq mi (18.6 km²) |
| Population Density | 0/sq mi |
| Coordinates | 8.7990°N, 150.2915°W |
| Timezone | Pacific/Chuuk |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| Sep 23, 1993 | 237 km W of Murilo, Micronesia | M5.0 | 35 km | 33 km |
| May 14, 2024 | 194 km W of Murilo, Micronesia | M4.4 | 31 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
17 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2023 | Mawar | Category 1 | 75 mph | 286 km |
| 2019 | Wutip | Category 1 | 92 mph | 256 km |
| 2015 | In-fa | Category 2 | 75 mph | 46 km |
| 2015 | Maysak | Category 2 | 92 mph | 111 km |
| 2004 | Nock-ten | Category 2 | 81 mph | 145 km |
| 2003 | Kujira | Category 2 | 69 mph | 145 km |
| 2003 | Lupit | Category 1 | 63 mph | 34 km |
| 2002 | Pongsona | Category 3 | 92 mph | 75 km |
| 2002 | Chataan | Category 1 | 58 mph | 179 km |
| 1997 | Isa | Category 2 | 58 mph | 149 km |
| 1994 | Zelda | Category 1 | 63 mph | 151 km |
| 1991 | Yuri | Category 4 | 132 mph | 85 km |
| 1990 | Owen | Category 5 | 109 mph | 84 km |
| 1990 | Russ | Category 4 | 115 mph | 236 km |
| 1986 | Marge | Category 1 | 52 mph | 240 km |
| 1984 | Vanessa | Category 1 | - | 289 km |
| 1980 | Wynne | Category 1 | 52 mph | 142 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 82°F (28°C) | 8.7 in | Coldest |
| February | 82°F (28°C) | 6.4 in | Driest |
| March | 82°F (28°C) | 7.6 in | |
| April | 83°F (28°C) | 9.9 in | |
| May | 83°F (28°C) | 11.4 in | Warmest |
| June | 83°F (28°C) | 11.6 in | |
| July | 82°F (28°C) | 12.2 in | |
| August | 82°F (28°C) | 13.7 in | Wettest |
| September | 82°F (28°C) | 11.5 in | |
| October | 83°F (28°C) | 12.5 in | |
| November | 83°F (28°C) | 10.5 in | |
| December | 83°F (28°C) | 10.4 in |
Onou has a seasonal temperature swing of 1°F / from 82°F in January to 83°F in May. Total annual precipitation is 126.4 inches, with August being the wettest month (13.7") and February the driest (6.4").