Vientiane, Laos

Full City Profile

196,731 Population 130/sq mi density

571 ft Elevation 174 meters

79°F Avg Temperature 26°C

Vientiane has a warm climate with an average annual temperature of 79°F (26°C). Winters average 72°F in January while summers reach 83°F in July. The area gets 222 sunny days per year. Annual precipitation totals 63.0 inches. The area receives 0.0 inches of snow annually.

Temperature

72°F Jan (22°C) 83°F Jul (28°C)

Annual Average	79.4°F
	47% above US avg
January Average	72°F (22°C)
July Average	83°F (28°C)
Sunny Days	222 days/yr

Geography

Elevation	571 ft (174 m)
Area	1,513.5 sq mi (3,920.0 km²)
Population Density	130/sq mi
Coordinates	17.9667°N, 102.6000°W
Timezone	Asia/Vientiane

Precipitation & Snow

Annual Rainfall 63.0"

66% above US avg

Snowfall 0.0"

Wettest Month (Aug) 12.40"

Driest Month (Dec) 0.16"

Air Quality

Earthquake History

1 earthquake (M2.5+) within 150 km since 1990. Strongest: M4.6. Most recent: M4.6 on Feb 23, 2011.

Feb 23, 2011	37 km S of Sainyabuli, Laos	M4.6	140 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

2 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 1.

Year	Name	Category	Closest
2017	Doksuri	Category 1	286 km
2013	Wutip	Category 1	243 km

Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	72°F (22°C)	0.2 in
February	75°F (24°C)	0.6 in
March	80°F (27°C)	1.4 in
April	84°F (29°C)	3.2 in	Warmest
May	84°F (29°C)	9.0 in
June	84°F (29°C)	10.7 in
July	83°F (28°C)	11.0 in
August	82°F (28°C)	12.4 in	Wettest
September	82°F (28°C)	10.4 in
October	80°F (27°C)	3.5 in
November	76°F (24°C)	0.6 in
December	71°F (22°C)	0.2 in	Coldest, Driest

Vientiane has a seasonal temperature swing of 13°F / from 71°F in December to 84°F in April. Total annual precipitation is 63.0 inches, with August being the wettest month (12.4") and December the driest (0.2").

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