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Weather & Climate in Xamtay, Laos
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Xamtay enjoys a temperate climate with an average annual temperature of 69°F (21°C). Winters average 57°F in January while summers reach 76°F in July / relatively mild seasonal variation. The area gets 279 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 58.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 5,650 feet.
Temperature
57°F Jan (14°C)
76°F Jul (25°C)
| Annual Average | 69.1°F |
| 28% above US avg | |
| January Average | 57°F (14°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 279 days/yr |
Geography
| Elevation | 5,650 ft (1,722 m) |
| Area | 1,611.9 sq mi (4,174.7 km²) |
| Population Density | 0/sq mi |
| Coordinates | 19.9452°N, 104.5172°W |
| Timezone | Asia/Vientiane |
Precipitation & Snow
Air Quality
Earthquake History
7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.9.
| Jul 27, 2020 | ~120km W of Hanoi, Vietnam | M4.9 | 103 km | 10 km |
| May 26, 2015 | 73 km ESE of Muang Phônsavan, Laos | M4.5 | 111 km | 13 km |
| Jun 21, 1995 | 83 km W of Xam Nua, Laos | M4.4 | 140 km | 33 km |
| Jun 21, 1995 | 72 km N of Muang Phônsavan, Laos | M4.2 | 135 km | 10 km |
| Mar 25, 2024 | 27 km S of Xuân Mai, Vietnam | M4.2 | 134 km | 10 km |
| May 7, 2011 | 46 km SSW of S?n La, Vietnam | M4.1 | 143 km | 10 km |
| Sep 19, 2010 | 71 km SSW of Hòa Bình, Vietnam | M4.0 | 63 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 | — | 194 km |
| 2025 | Bualoi | Category 1 | — | 263 km |
| 2024 | Yagi | Category 3 | 104 mph | 170 km |
| 2017 | Doksuri | Category 2 | 92 mph | 242 km |
| 2016 | Mirinae | Category 1 | 52 mph | 178 km |
| 2014 | Kalmaegi | Category 1 | 63 mph | 284 km |
| 2013 | Wutip | Category 2 | 69 mph | 231 km |
| 2012 | Son-tinh | Category 3 | 81 mph | 221 km |
| 1997 | Zita | Category 1 | 46 mph | 216 km |
| 1996 | Frankie | Category 2 | 58 mph | 150 km |
| 1996 | Niki | Category 1 | 69 mph | 113 km |
| 1995 | Lois | Category 1 | 58 mph | 132 km |
| 1993 | Lewis | Category 1 | 58 mph | 261 km |
| 1991 | Fred | Category 1 | 69 mph | 286 km |
| 1989 | Brian | Category 1 | 58 mph | 235 km |
| 1987 | Cary | Category 1 | 63 mph | 280 km |
| 1985 | Dot | Category 1 | — | 283 km |
| 1982 | Nancy | Category 1 | 81 mph | 155 km |
| 1980 | Ruth | Category 1 | 63 mph | 228 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 57°F (14°C) | 0.4 in | Coldest, Driest |
| February | 62°F (17°C) | 1.4 in | |
| March | 67°F (20°C) | 1.5 in | |
| April | 73°F (23°C) | 3.6 in | |
| May | 77°F (25°C) | 7.1 in | |
| June | 79°F (26°C) | 7.3 in | Warmest |
| July | 76°F (25°C) | 11.2 in | Wettest |
| August | 78°F (25°C) | 10.8 in | |
| September | 76°F (24°C) | 10.2 in | |
| October | 72°F (22°C) | 3.9 in | |
| November | 66°F (19°C) | 1.4 in | |
| December | 61°F (16°C) | 0.7 in |
Xamtay has a seasonal temperature swing of 22°F / from 57°F in January to 79°F in June. Total annual precipitation is 59.5 inches, with July being the wettest month (11.2") and January the driest (0.4").