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Weather & Climate in Longgun, China
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Longgun has a warm climate with an average annual temperature of 77°F (25°C). Winters average 66°F in January while summers reach 84°F in July / relatively mild seasonal variation. The area gets 296 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 74.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 43 feet.
Temperature
66°F Jan (19°C)
84°F Jul (29°C)
| Annual Average | 76.7°F |
| 42% above US avg | |
| January Average | 66°F (19°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 296 days/yr |
Geography
| Elevation | 43 ft (13 m) |
| Area | 62.8 sq mi (162.6 km²) |
| Population Density | 0/sq mi |
| Coordinates | 19.0512°N, 110.5247°W |
| Timezone | Asia/Shanghai |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| May 17, 1999 | Hainan, China | M4.2 | 74 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
76 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Matmo | Category 2 | — | 169 km |
| 2025 | Kajiki | Category 2 | — | 169 km |
| 2025 | Wutip | Category 1 | — | 204 km |
| 2024 | Yagi | Category 5 | 121 mph | 99 km |
| 2024 | Yinxing | Category 3 | 98 mph | 234 km |
| 2023 | Talim | Category 1 | 69 mph | 236 km |
| 2022 | Nesat | Category 1 | 86 mph | 248 km |
| 2022 | Chaba | Category 1 | 81 mph | 200 km |
| 2021 | Rai | Category 1 | 81 mph | 219 km |
| 2017 | Doksuri | Category 2 | 92 mph | 238 km |
| 2017 | Khanun | Category 1 | 58 mph | 207 km |
| 2016 | Sarika | Category 1 | 69 mph | 37 km |
| 2015 | Mujigae | Category 4 | 98 mph | 185 km |
| 2014 | Rammasun | Category 5 | 104 mph | 120 km |
| 2014 | Kalmaegi | Category 1 | 86 mph | 128 km |
| 2013 | Wutip | Category 3 | 75 mph | 250 km |
| 2013 | Haiyan | Category 2 | 86 mph | 197 km |
| 2013 | Utor | Category 2 | 81 mph | 247 km |
| 2013 | Rumbia | Category 1 | 58 mph | 131 km |
| 2012 | Son-tinh | Category 3 | 98 mph | 243 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
1 volcano within 200 km. Closest: Hainan Volcanic Field (100 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Hainan Volcanic Field | Pyroclastic cone(s) | 196 m (643 ft) | 1933 | 100 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 66°F (19°C) | 0.9 in | Coldest, Driest |
| February | 69°F (21°C) | 1.0 in | |
| March | 74°F (23°C) | 1.3 in | |
| April | 79°F (26°C) | 2.9 in | |
| May | 82°F (28°C) | 6.4 in | |
| June | 83°F (29°C) | 8.6 in | |
| July | 84°F (29°C) | 8.3 in | Warmest |
| August | 83°F (28°C) | 9.9 in | |
| September | 81°F (27°C) | 11.0 in | Wettest |
| October | 78°F (26°C) | 9.7 in | |
| November | 73°F (23°C) | 3.8 in | |
| December | 68°F (20°C) | 1.5 in |
Longgun has a seasonal temperature swing of 18°F / from 66°F in January to 84°F in July. Total annual precipitation is 65.3 inches, with September being the wettest month (11.0") and January the driest (0.9").