Weather & climate · Vientiane

Best Time to Visit Laos

December to January

The best time to visit Laos is December to January, when daytime highs in Vientiane are around 27–28°C. February and November are also a good time to go. April is the warmest month (37°C by day), January the coldest (15°C at night), and August the wettest with about 246 mm of rain.

37°C

Warmest: April

15°C

Coldest nights: January

1216 mm

Rain per year

246 mm

Wettest: August

Laos weather by month

Jan28°C15°C8 mm
Feb32°C18°C13 mm
Mar35°C21°C35 mm
Apr37°C24°C62 mm
May34°C25°C168 mm
Jun32°C24°C170 mm
Jul31°C24°C203 mm
Aug30°C23°C246 mm
Sep30°C23°C204 mm
Oct30°C21°C85 mm
Nov29°C18°C16 mm
Dec27°C15°C6 mm

Best time Good Less ideal

Average high Average low Rain (mm per month)

Month	High	Low	Rain	Humidity	Cloud cover	Verdict
January	28°C	15°C	8 mm	65%	33%	Best time
February	32°C	18°C	13 mm	57%	33%	Good
March	35°C	21°C	35 mm	52%	47%	Very hot
April	37°C	24°C	62 mm	55%	58%	Very hot
May	34°C	25°C	168 mm	70%	82%	Very hot
June	32°C	24°C	170 mm	79%	90%	Rainy
July	31°C	24°C	203 mm	82%	92%	Rainy
August	30°C	23°C	246 mm	85%	93%	Rainy
September	30°C	23°C	204 mm	85%	84%	Rainy
October	30°C	21°C	85 mm	82%	59%	Fair
November	29°C	18°C	16 mm	76%	40%	Good
December	27°C	15°C	6 mm	71%	32%	Best time

Data: NASA POWER (Prediction Of Worldwide Energy Resources) — 25-year climate averages 2001–2025, public domain, for the area around Vientiane (17.97, 102.6). Satellite and model averages — local weather stations can differ by 1–2 °C, and mountains or coasts elsewhere in Laos have their own climate.

Frequently asked questions

When is the best time to visit Laos?

December to January. The best time to visit Laos is December to January, when daytime highs in Vientiane are around 27–28°C. February and November are also a good time to go. April is the warmest month (37°C by day), January the coldest (15°C at night), and August the wettest with about 246 mm of rain.

What is the hottest month in Laos?

April, with average highs of 37°C in Vientiane.

What is the coldest month in Laos?

January, when nights drop to about 15°C and days reach 28°C.

What is the rainiest month in Laos?

August with about 246 mm; December is the driest (6 mm).

When should I avoid visiting Laos?

May is the least comfortable month on average: 34°C by day and 168 mm of rain.

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