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Weather & Climate in Dayan, China
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Dayan enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 45°F in January while summers reach 84°F in July. The area gets 249 sunny days per year, above the national average. Annual precipitation totals 52.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 827 feet.
Temperature
45°F Jan (7°C)
84°F Jul (29°C)
| Annual Average | 64.9°F |
| 20% above US avg | |
| January Average | 45°F (7°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 249 days/yr |
Geography
| Elevation | 827 ft (252 m) |
| Area | 493.1 sq mi (1,277.2 km²) |
| Population Density | 0/sq mi |
| Coordinates | 29.5077°N, 121.2995°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 | 121 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
33 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Bebinca | Category 1 | 81 mph | 162 km |
| 2022 | Muifa | Category 2 | 92 mph | 106 km |
| 2021 | Chanthu | Category 2 | 98 mph | 219 km |
| 2021 | In-fa | Category 1 | 86 mph | 287 km |
| 2020 | Hagupit | Category 1 | 81 mph | 202 km |
| 2019 | Lekima | Category 3 | 104 mph | 66 km |
| 2019 | Mitag | Category 1 | 81 mph | 134 km |
| 2015 | Chan-hom | Category 4 | 104 mph | 107 km |
| 2013 | Fitow | Category 1 | — | 280 km |
| 2012 | Haikui | Category 1 | 75 mph | 118 km |
| 2007 | Wipha | Category 3 | 86 mph | 246 km |
| 2006 | Saomai | Category 4 | 115 mph | 276 km |
| 2005 | Khanun | Category 3 | 92 mph | 41 km |
| 2005 | Matsa | Category 1 | 81 mph | 170 km |
| 2004 | Rananim | Category 2 | 92 mph | 146 km |
| 2002 | Rammasun | Category 3 | 98 mph | 274 km |
| 2002 | Sinlaku | Category 1 | 86 mph | 257 km |
| 2001 | Chebi | Category 1 | — | 276 km |
| 2000 | Prapiroon | Category 1 | 81 mph | 179 km |
| 2000 | Jelawat | Category 1 | 81 mph | 54 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 | — | 95 km |
Source: NOAA/NCEI Historical Tsunami Database.