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Weather & Climate in Mamu, China
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mamu enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 42°F in January while summers reach 81°F in July. The area gets 249 sunny days per year, above the national average. Annual precipitation totals 48.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 46 feet.
Temperature
42°F Jan (5°C)
81°F Jul (27°C)
| Annual Average | 61.4°F |
| 14% above US avg | |
| January Average | 42°F (5°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 249 days/yr |
Geography
| Elevation | 46 ft (14 m) |
| Area | 561.7 sq mi (1,454.7 km²) |
| Population Density | 5/sq mi |
| Coordinates | 30.1654°N, 121.9519°W |
| Timezone | Asia/Shanghai |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.0.
| May 25, 2004 | 12 km NE of Shenjiamen, China | M4.0 | 44 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
32 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Bebinca | Category 1 | 86 mph | 79 km |
| 2022 | Hinnamnor | Category 3 | 104 mph | 287 km |
| 2022 | Muifa | Category 2 | 92 mph | 38 km |
| 2021 | Chanthu | Category 2 | 98 mph | 150 km |
| 2021 | In-fa | Category 1 | 86 mph | 281 km |
| 2020 | Bavi | Category 3 | 98 mph | 296 km |
| 2020 | Hagupit | Category 1 | 81 mph | 286 km |
| 2019 | Lekima | Category 3 | 104 mph | 150 km |
| 2019 | Mitag | Category 1 | 69 mph | 176 km |
| 2015 | Chan-hom | Category 3 | 98 mph | 69 km |
| 2012 | Haikui | Category 1 | 75 mph | 145 km |
| 2011 | Muifa | Category 1 | 81 mph | 257 km |
| 2010 | Kompasu | Category 3 | 81 mph | 300 km |
| 2005 | Khanun | Category 3 | 86 mph | 133 km |
| 2005 | Matsa | Category 1 | 75 mph | 243 km |
| 2004 | Rananim | Category 2 | 69 mph | 225 km |
| 2002 | Rammasun | Category 3 | 92 mph | 205 km |
| 2000 | Saomai | Category 2 | 81 mph | 293 km |
| 2000 | Jelawat | Category 2 | 81 mph | 97 km |
| 2000 | Prapiroon | Category 1 | 81 mph | 114 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1991 | AOSHAN | Meteorological | 3.0 m | - | 30 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 2.1 in | Coldest |
| February | 43°F (6°C) | 2.8 in | |
| March | 49°F (9°C) | 3.9 in | |
| April | 58°F (14°C) | 4.4 in | |
| May | 66°F (19°C) | 5.2 in | |
| June | 74°F (23°C) | 6.5 in | Wettest |
| July | 81°F (27°C) | 4.2 in | |
| August | 81°F (27°C) | 5.4 in | Warmest |
| September | 75°F (24°C) | 6.4 in | |
| October | 66°F (19°C) | 2.9 in | |
| November | 57°F (14°C) | 2.5 in | |
| December | 47°F (8°C) | 1.8 in | Driest |
Mamu has a seasonal temperature swing of 39°F / from 42°F in January to 81°F in August. Total annual precipitation is 48.1 inches, with June being the wettest month (6.5") and December the driest (1.8").