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Weather & Climate in Ban Dônghén, Laos
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ban Dônghén has a warm climate with an average annual temperature of 79°F (26°C). Winters average 68°F in January while summers reach 82°F in July / relatively mild seasonal variation. The area gets 316 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 78.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 515 feet.
Temperature
68°F Jan (20°C)
82°F Jul (28°C)
| Annual Average | 79.3°F |
| 47% above US avg | |
| January Average | 68°F (20°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 316 days/yr |
Geography
| Elevation | 515 ft (157 m) |
| Area | 394.6 sq mi (1,022.1 km²) |
| Population Density | 0/sq mi |
| Coordinates | 16.7030°N, 105.2821°W |
| Timezone | Asia/Vientiane |
Precipitation & Snow
Air Quality
Hurricane History
23 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Kajiki | Category 2 | — | 216 km |
| 2025 | Bualoi | Category 1 | — | 193 km |
| 2022 | Noru | Category 1 | 63 mph | 283 km |
| 2020 | Vamco | Category 1 | 63 mph | 208 km |
| 2017 | Doksuri | Category 2 | 92 mph | 133 km |
| 2013 | Wutip | Category 2 | 75 mph | 134 km |
| 2012 | Son-tinh | Category 3 | 92 mph | 293 km |
| 2010 | Mindulle | Category 1 | 52 mph | 265 km |
| 2007 | Lekima | Category 1 | 63 mph | 186 km |
| 2006 | Xangsane | Category 1 | 75 mph | 212 km |
| 1995 | Lois | Category 1 | 58 mph | 279 km |
| 1991 | Fred | Category 2 | 75 mph | 180 km |
| 1990 | Ed | Category 1 | — | 279 km |
| 1990 | Becky | Category 1 | 69 mph | 178 km |
| 1989 | Angela | Category 2 | 81 mph | 151 km |
| 1989 | Dan | Category 1 | 75 mph | 265 km |
| 1989 | Brian | Category 1 | 63 mph | 262 km |
| 1987 | Betty | Category 2 | 86 mph | 194 km |
| 1987 | Cary | Category 1 | 69 mph | 250 km |
| 1985 | Cecil | Category 3 | 92 mph | 88 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 68°F (20°C) | 0.2 in | Coldest |
| February | 77°F (25°C) | 0.7 in | |
| March | 82°F (28°C) | 1.1 in | |
| April | 85°F (29°C) | 3.3 in | Warmest |
| May | 84°F (29°C) | 7.5 in | |
| June | 83°F (28°C) | 10.7 in | |
| July | 82°F (28°C) | 10.2 in | |
| August | 81°F (27°C) | 14.7 in | Wettest |
| September | 81°F (27°C) | 9.7 in | |
| October | 79°F (26°C) | 3.3 in | |
| November | 75°F (24°C) | 0.4 in | |
| December | 72°F (22°C) | 0.1 in | Driest |
Ban Dônghén has a seasonal temperature swing of 17°F / from 68°F in January to 85°F in April. Total annual precipitation is 61.9 inches, with August being the wettest month (14.7") and December the driest (0.1").