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Weather & Climate in Thuần Thiện, Vietnam
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Thuần Thiện has a warm climate with an average annual temperature of 76°F (25°C). Winters average 66°F in January while summers reach 85°F in July / relatively mild seasonal variation. The area gets 212 sunny days per year. Annual precipitation totals 74.5 inches (wetter than the 38-inch national average). The city sits at an elevation of 20 feet.
Temperature
66°F Jan (19°C)
85°F Jul (30°C)
| Annual Average | 76.4°F |
| 41% above US avg | |
| January Average | 66°F (19°C) |
| July Average | 85°F (30°C) |
| Sunny Days | 212 days/yr |
Geography
| Elevation | 20 ft (6 m) |
| Area | 16.4 sq mi (42.6 km²) |
| Population Density | 484/sq mi |
| Coordinates | 18.4742°N, 105.7869°W |
| Timezone | Asia/Bangkok |
Precipitation & Snow
Air Quality
Hurricane History
32 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Kajiki | Category 2 | — | 17 km |
| 2025 | Bualoi | Category 1 | — | 53 km |
| 2024 | Yagi | Category 3 | 104 mph | 281 km |
| 2020 | Vamco | Category 2 | 75 mph | 183 km |
| 2017 | Doksuri | Category 2 | 92 mph | 78 km |
| 2016 | Mirinae | Category 1 | 52 mph | 197 km |
| 2013 | Wutip | Category 2 | 75 mph | 75 km |
| 2013 | Haiyan | Category 1 | 75 mph | 248 km |
| 2012 | Son-tinh | Category 3 | 92 mph | 153 km |
| 2010 | Mindulle | Category 1 | 52 mph | 165 km |
| 2007 | Lekima | Category 1 | 63 mph | 99 km |
| 2003 | Nepartak | Category 1 | 63 mph | 287 km |
| 2000 | Wukong | Category 1 | 58 mph | 244 km |
| 1996 | Frankie | Category 2 | 58 mph | 203 km |
| 1996 | Niki | Category 2 | 75 mph | 157 km |
| 1996 | Willie | Category 1 | 52 mph | 184 km |
| 1995 | Ted | Category 1 | 58 mph | 244 km |
| 1995 | Lois | Category 1 | 58 mph | 86 km |
| 1993 | Lewis | Category 1 | 63 mph | 122 km |
| 1991 | Fred | Category 2 | 75 mph | 76 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 |
| 1899 | NORTH CENTRAL VIETNAM | Unknown | 3.0 m | — | 63 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 66°F (19°C) | 2.4 in | Coldest |
| February | 67°F (19°C) | 2.6 in | |
| March | 71°F (22°C) | 1.7 in | Driest |
| April | 78°F (25°C) | 2.1 in | |
| May | 83°F (28°C) | 5.6 in | |
| June | 85°F (30°C) | 4.6 in | Warmest |
| July | 85°F (30°C) | 5.5 in | |
| August | 84°F (29°C) | 8.5 in | |
| September | 81°F (27°C) | 18.2 in | Wettest |
| October | 77°F (25°C) | 13.0 in | |
| November | 72°F (22°C) | 6.6 in | |
| December | 67°F (20°C) | 3.9 in |
Thuần Thiện has a seasonal temperature swing of 20°F / from 66°F in January to 85°F in June. Total annual precipitation is 74.4 inches, with September being the wettest month (18.2") and March the driest (1.7").