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Weather & Climate in Guanhaiwei, China
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Guanhaiwei enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 43°F in January while summers reach 83°F in July. The area gets 240 sunny days per year, above the national average. Annual precipitation totals 56.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 26 feet.
Temperature
43°F Jan (6°C)
83°F Jul (29°C)
| Annual Average | 63.6°F |
| 18% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 83°F (29°C) |
| Sunny Days | 240 days/yr |
Geography
| Elevation | 26 ft (8 m) |
| Area | 510.2 sq mi (1,321.4 km²) |
| Population Density | 0/sq mi |
| Coordinates | 30.1703°N, 121.4018°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 | 96 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
25 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Bebinca | Category 1 | 81 mph | 90 km |
| 2022 | Muifa | Category 2 | 92 mph | 68 km |
| 2021 | Chanthu | Category 2 | 98 mph | 199 km |
| 2020 | Hagupit | Category 1 | 81 mph | 276 km |
| 2019 | Lekima | Category 3 | 104 mph | 107 km |
| 2019 | Mitag | Category 1 | 69 mph | 191 km |
| 2015 | Chan-hom | Category 3 | 98 mph | 119 km |
| 2012 | Haikui | Category 1 | 75 mph | 166 km |
| 2005 | Khanun | Category 3 | 86 mph | 83 km |
| 2005 | Matsa | Category 1 | 75 mph | 242 km |
| 2004 | Rananim | Category 2 | 69 mph | 219 km |
| 2002 | Rammasun | Category 3 | 92 mph | 256 km |
| 2000 | Prapiroon | Category 1 | 81 mph | 166 km |
| 2000 | Jelawat | Category 1 | 81 mph | 104 km |
| 1997 | Winnie | Category 1 | 86 mph | 160 km |
| 1994 | Seth | Category 2 | 69 mph | 234 km |
| 1994 | Fred | Category 2 | 86 mph | 273 km |
| 1994 | Doug | Category 1 | 81 mph | 176 km |
| 1990 | Abe | Category 2 | 75 mph | 83 km |
| 1986 | Vera | Category 1 | 86 mph | 270 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 | — | 75 km |
Source: NOAA/NCEI Historical Tsunami Database.