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Weather & Climate in Sandu, China
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sandu has a warm climate with an average annual temperature of 76°F (25°C). Winters average 65°F in January while summers reach 84°F in July / relatively mild seasonal variation. The area gets 228 sunny days per year, above the national average. Annual precipitation totals 59.7 inches (wetter than the 38-inch national average). The city sits at an elevation of 92 feet.
Temperature
65°F Jan (18°C)
84°F Jul (29°C)
| Annual Average | 76.2°F |
| 41% above US avg | |
| January Average | 65°F (18°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 228 days/yr |
Geography
| Elevation | 92 ft (28 m) |
| Area | 43.0 sq mi (111.3 km²) |
| Population Density | 1,785/sq mi |
| Coordinates | 19.7894°N, 109.2150°W |
| Timezone | Asia/Shanghai |
Precipitation & Snow
Air Quality
Earthquake History
8 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.5.
| Jan 10, 1995 | 64 km WNW of Lincheng, China | M5.5 | 47 km | 33 km |
| Dec 31, 1994 | 77 km NNW of Lincheng, China | M5.3 | 83 km | 33 km |
| Jun 23, 2023 | southeastern China | M4.6 | 125 km | 14 km |
| Jun 5, 1995 | 122 km NW of Sanya, China | M4.4 | 112 km | 10 km |
| Mar 23, 1995 | 60 km NNW of Lincheng, China | M4.4 | 72 km | 33 km |
| Apr 15, 1995 | 68 km NNW of Lincheng, China | M4.3 | 80 km | 33 km |
| May 7, 1995 | 63 km NNW of Lincheng, China | M4.2 | 73 km | 10 km |
| Feb 25, 1996 | 49 km WNW of Lincheng, China | M4.1 | 23 km | 20 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
66 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Matmo | Category 2 | — | 167 km |
| 2025 | Ragasa | Category 2 | — | 297 km |
| 2025 | Kajiki | Category 2 | — | 202 km |
| 2025 | Wutip | Category 1 | — | 58 km |
| 2024 | Yagi | Category 4 | 121 mph | 61 km |
| 2023 | Talim | Category 1 | 69 mph | 175 km |
| 2022 | Chaba | Category 1 | 81 mph | 260 km |
| 2017 | Doksuri | Category 2 | 92 mph | 269 km |
| 2017 | Khanun | Category 1 | 58 mph | 236 km |
| 2016 | Sarika | Category 1 | 69 mph | 113 km |
| 2015 | Mujigae | Category 4 | 98 mph | 200 km |
| 2014 | Rammasun | Category 5 | 104 mph | 109 km |
| 2014 | Kalmaegi | Category 1 | 86 mph | 100 km |
| 2013 | Haiyan | Category 2 | 81 mph | 139 km |
| 2013 | Wutip | Category 2 | 75 mph | 291 km |
| 2013 | Rumbia | Category 1 | 58 mph | 200 km |
| 2012 | Son-tinh | Category 3 | 98 mph | 231 km |
| 2012 | Kai-tak | Category 1 | 75 mph | 162 km |
| 2011 | Nesat | Category 1 | 75 mph | 197 km |
| 2010 | Mindulle | Category 1 | 52 mph | 275 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
1 volcano within 200 km. Closest: Hainan Volcanic Field (107 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Hainan Volcanic Field | Pyroclastic cone(s) | 196 m (643 ft) | 1933 | 107 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 65°F (18°C) | 0.6 in | Coldest, Driest |
| February | 67°F (19°C) | 0.9 in | |
| March | 71°F (22°C) | 1.3 in | |
| April | 78°F (25°C) | 2.8 in | |
| May | 83°F (28°C) | 6.9 in | |
| June | 84°F (29°C) | 7.8 in | |
| July | 84°F (29°C) | 8.9 in | Warmest |
| August | 84°F (29°C) | 10.9 in | Wettest |
| September | 82°F (28°C) | 9.7 in | |
| October | 78°F (26°C) | 6.9 in | |
| November | 73°F (23°C) | 2.3 in | |
| December | 67°F (20°C) | 0.8 in |
Sandu has a seasonal temperature swing of 19°F / from 65°F in January to 84°F in July. Total annual precipitation is 59.7 inches, with August being the wettest month (10.9") and January the driest (0.6").