All Countries
Weather & Climate in Heyan, China
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Heyan experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 36°F in January while summers reach 74°F in July. The area gets 247 sunny days per year, above the national average. Annual precipitation totals 49.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 2,159 feet.
Temperature
36°F Jan (2°C)
74°F Jul (23°C)
| Annual Average | 55.3°F |
| 2% above US avg | |
| January Average | 36°F (2°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 247 days/yr |
Geography
| Elevation | 2,159 ft (658 m) |
| Area | 2,322.2 sq mi (6,014.5 km²) |
| Population Density | 8/sq mi |
| Coordinates | 31.3564°N, 108.6705°W |
| Timezone | Asia/Shanghai |
Precipitation & Snow
Air Quality
Earthquake History
7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Jul 15, 1997 | 69 km WSW of Lichuan, China | M4.5 | 142 km | 33 km |
| Jul 18, 2013 | 66 km SSW of Wanxian, China | M4.4 | 133 km | 44 km |
| Jul 14, 1990 | 107 km NE of Wanxian, China | M4.4 | 47 km | 30 km |
| May 30, 2012 | 72 km WSW of Lichuan, China | M4.1 | 147 km | 10 km |
| Feb 10, 2005 | 41 km WNW of Lichuan, China | M4.1 | 110 km | 24 km |
| Mar 24, 2019 | 95 km NE of Enshi, China | M4.1 | 150 km | 15 km |
| Jan 29, 1993 | 65 km SSW of Wanxian, China | M3.6 | 132 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 13.1 m (43 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2008 | WU GORGE, WUSHAN COUNTY | Meteorological | 13.1 m | — | 123 km |
| 2015 | WUSHAN, CHONGQING | Meteorological | 6.2 m | 2 | 121 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 36°F (2°C) | 0.8 in | Coldest, Driest |
| February | 39°F (4°C) | 0.9 in | |
| March | 46°F (8°C) | 2.1 in | |
| April | 56°F (13°C) | 4.5 in | |
| May | 63°F (17°C) | 6.1 in | |
| June | 69°F (21°C) | 6.5 in | |
| July | 74°F (23°C) | 8.0 in | Wettest |
| August | 74°F (23°C) | 6.0 in | Warmest |
| September | 65°F (19°C) | 6.9 in | |
| October | 56°F (14°C) | 4.4 in | |
| November | 47°F (8°C) | 2.1 in | |
| December | 39°F (4°C) | 0.9 in |
Heyan has a seasonal temperature swing of 38°F / from 36°F in January to 74°F in August. Total annual precipitation is 49.2 inches, with July being the wettest month (8.0") and January the driest (0.8").