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Weather & Climate in Si’en, China
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Si’en enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 53°F in January while summers reach 80°F in July. The area gets 242 sunny days per year, above the national average. Annual precipitation totals 84.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 764 feet.
Temperature
53°F Jan (12°C)
80°F Jul (26°C)
| Annual Average | 64.8°F |
| 20% above US avg | |
| January Average | 53°F (12°C) |
| July Average | 80°F (26°C) |
| Sunny Days | 242 days/yr |
Geography
| Elevation | 764 ft (233 m) |
| Area | 12.3 sq mi (31.8 km²) |
| Population Density | 0/sq mi |
| Coordinates | 24.8420°N, 108.2716°W |
| Timezone | Asia/Shanghai |
Precipitation & Snow
Air Quality
Earthquake History
14 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Feb 19, 2013 | 77 km E of Baise City, China | M4.7 | 146 km | 10 km |
| Apr 16, 1998 | 108 km SW of Xiajiang, China | M4.6 | 37 km | 33 km |
| Feb 15, 2024 | 102 km WNW of Hechi, China | M4.5 | 117 km | 10 km |
| Aug 9, 2007 | 99 km SSW of Xiaoweizhai, China | M4.4 | 123 km | 10 km |
| Oct 23, 2013 | 95 km E of Baise City, China | M4.4 | 132 km | 14 km |
| Jul 30, 2017 | 67 km WNW of Laibin, China | M4.4 | 115 km | 10 km |
| Apr 16, 1998 | 111 km SSW of Pingjiang, China | M4.3 | 55 km | 33 km |
| Dec 13, 1992 | 113 km NNW of Nanning, China | M4.3 | 121 km | 33 km |
| Jul 14, 2017 | 136 km NNE of Baise City, China | M4.2 | 94 km | 10 km |
| Jun 15, 2008 | 108 km ENE of Baise City, China | M4.1 | 99 km | 10 km |
| Feb 9, 1993 | 87 km NNW of Nanning, China | M4.1 | 145 km | 10 km |
| Feb 5, 1993 | 100 km NNW of Nanning, China | M4.0 | 128 km | 10 km |
| Jun 19, 2008 | 111 km SSW of Xiaoweizhai, China | M3.6 | 121 km | 10 km |
| Jul 24, 1993 | 26 km ESE of Xishan, China | M3.6 | 129 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2015 | Mujigae | Category 1 | 58 mph | 247 km |
| 2003 | Imbudo | Category 1 | — | 289 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (12°C) | 1.4 in | |
| February | 49°F (9°C) | 2.1 in | Coldest |
| March | 56°F (13°C) | 2.4 in | |
| April | 65°F (18°C) | 5.2 in | |
| May | 72°F (22°C) | 8.9 in | |
| June | 77°F (25°C) | 9.9 in | Wettest |
| July | 80°F (26°C) | 8.0 in | Warmest |
| August | 79°F (26°C) | 7.8 in | |
| September | 75°F (24°C) | 3.8 in | |
| October | 67°F (20°C) | 3.2 in | |
| November | 58°F (15°C) | 2.1 in | |
| December | 51°F (10°C) | 1.2 in | Driest |
Si’en has a seasonal temperature swing of 31°F / from 49°F in February to 80°F in July. Total annual precipitation is 56.0 inches, with June being the wettest month (9.9") and December the driest (1.2").