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Weather & Climate in Kỳ Sơn, Vietnam
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kỳ Sơn has a warm climate with an average annual temperature of 73°F (23°C). Winters average 61°F in January while summers reach 83°F in July. The area gets 233 sunny days per year, above the national average. Annual precipitation totals 66.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 92 feet.
Temperature
61°F Jan (16°C)
83°F Jul (28°C)
| Annual Average | 73.3°F |
| 36% above US avg | |
| January Average | 61°F (16°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 233 days/yr |
Geography
| Elevation | 92 ft (28 m) |
| Area | 297.7 sq mi (771.0 km²) |
| Population Density | 0/sq mi |
| Coordinates | 20.8867°N, 105.3524°W |
| Timezone | Asia/Bangkok |
Precipitation & Snow
Air Quality
Earthquake History
6 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.9.
| Jul 27, 2020 | ~120km W of Hanoi, Vietnam | M4.9 | 76 km | 10 km |
| Oct 6, 1991 | 33 km E of S?n La, Vietnam | M4.5 | 129 km | 10 km |
| Mar 25, 2024 | 27 km S of Xuân Mai, Vietnam | M4.2 | 34 km | 10 km |
| Oct 23, 1993 | 20 km SSW of Yên Bái, Vietnam | M4.1 | 88 km | 33 km |
| Oct 11, 1991 | 11 km N of Tuyên Quang, Vietnam | M4.1 | 117 km | 10 km |
| Sep 19, 2010 | 71 km SSW of Hòa Bình, Vietnam | M4.0 | 80 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
19 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Kajiki | Category 2 | — | 257 km |
| 2024 | Yagi | Category 3 | 104 mph | 38 km |
| 2016 | Mirinae | Category 1 | 52 mph | 117 km |
| 2014 | Rammasun | Category 2 | 46 mph | 234 km |
| 2014 | Kalmaegi | Category 1 | 75 mph | 149 km |
| 2013 | Haiyan | Category 1 | 75 mph | 203 km |
| 2012 | Son-tinh | Category 3 | 86 mph | 131 km |
| 2003 | Krovanh | Category 2 | 63 mph | 174 km |
| 1997 | Zita | Category 1 | 52 mph | 85 km |
| 1996 | Frankie | Category 2 | 58 mph | 87 km |
| 1996 | Willie | Category 1 | 52 mph | 269 km |
| 1996 | Sally | Category 1 | 63 mph | 249 km |
| 1996 | Niki | Category 1 | 75 mph | 102 km |
| 1995 | Lois | Category 1 | 58 mph | 188 km |
| 1993 | Lewis | Category 1 | 63 mph | 259 km |
| 1989 | Brian | Category 1 | 63 mph | 257 km |
| 1985 | Dot | Category 1 | 69 mph | 296 km |
| 1982 | Nancy | Category 1 | 81 mph | 211 km |
| 1980 | Ruth | Category 1 | 63 mph | 178 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 61°F (16°C) | 0.4 in | Coldest, Driest |
| February | 63°F (17°C) | 1.0 in | |
| March | 67°F (19°C) | 1.0 in | |
| April | 74°F (23°C) | 3.0 in | |
| May | 80°F (27°C) | 7.8 in | |
| June | 83°F (28°C) | 8.5 in | Warmest |
| July | 83°F (28°C) | 11.8 in | |
| August | 82°F (28°C) | 12.1 in | Wettest |
| September | 80°F (27°C) | 12.1 in | |
| October | 76°F (24°C) | 5.1 in | |
| November | 70°F (21°C) | 1.5 in | |
| December | 64°F (18°C) | 0.7 in |
Kỳ Sơn has a seasonal temperature swing of 22°F / from 61°F in January to 83°F in June. Total annual precipitation is 65.0 inches, with August being the wettest month (12.1") and January the driest (0.4").