Is It Monsoon in Laos? Rainfall and Weather by City and Month

🇱🇦 Laos 4 CITIES
Plan around the monsoon

Is it monsoon in Laos?

Laos runs on two monsoons rather than one clean wet-dry split: a winter monsoon that brings good, cool weather from November to February, and a summer monsoon that brings rain and high humidity from May to around early or mid-October. Both arrive somewhat irregularly, varying in timing and intensity from year to year. Temperatures rise sharply between the two, with March through May, before the rains, historically the hottest stretch of the year almost everywhere in the country, sometimes reaching 40°C or more even at low elevation.

Location and altitude still make a real difference. Xam Neua, tucked into the remote northeastern highlands, stays coolest year-round and sees cloud even during the dry season. Luang Prabang, further west, is one of the least rainy parts of the country despite sharing the north's cooler winters. Vientiane, the capital on the Mekong, runs warmer in winter than the north, while Pakse, in the south, is warmer still, with highs typically around 32°C even in December and January. All four, though, share the same essential rhythm: a cool, comfortable dry season from November to February, and a hot, humid, rain-soaked stretch from June through August.

Regions at a glance
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Far North Highlands (Xam Neua)
Remote and mountainous, this region stays coolest year-round and sees frequent cloud cover even during the dry season, with occasional winter snow at higher elevations nearby.
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North (Luang Prabang)
One of the least rainy parts of Laos, with a cool, comfortable dry season from November to February and a monsoon peak in August.
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Center (Vientiane)
Laos' capital, on the banks of the Mekong, runs warmer in winter than the north, with the same hot pre-monsoon stretch from March to May and an August rainfall peak.
South (Pakse)
The warmest of Laos' major cities even in the cool season, with June through September each historically exceeding 300mm of rain and August the wettest month.
Pakse
Xam Neua
Vientiane
Luang Prabang
Frequently asked questions
Does Laos have one monsoon season?
Laos runs on two: a winter monsoon bringing good, cool weather from November to February, and a summer monsoon bringing rain and high humidity from May to around early or mid-October. Both can arrive somewhat irregularly from year to year.
What is the best time to visit Laos overall?
November through February is historically the coolest, most comfortable part of the dry season across the whole country, with mid-December to late January often cited as the single best stretch.
Which part of Laos is hottest?
Pakse, in the south, is historically the warmest of Laos' major cities even in the cool season, with highs typically still around 32°C in December and January.
Which part of Laos gets the most rain?
Rainfall varies by region and can exceed 3,000mm a year on the most exposed mountain slopes, but among this dataset's cities, Xam Neua and Pakse see the heaviest totals, both with August as their wettest month.
Does it get cold in Laos?
Yes, especially at night and in the north. Nights across the country can drop below 10°C in winter, and in the northern mountains, occasionally down to freezing or below; snow fell above 900 meters in January 2016.
Do typhoons affect Laos?
Laos has no coastline, so it isn't hit directly, but the remnants of typhoons from the South China Sea, which affect Vietnam more directly, can still bring wind and heavy rain, more often to the north than the south. More rarely, remnants of cyclones from the Bay of Bengal can also reach the northwest.
What should I pack for Laos?
It depends on region and season. In the lowlands, light clothing year-round with a jacket or sweater for cool evenings; in the northern mountains above 1,000 meters, warmer spring/autumn clothing; for the highest peaks, a down jacket, hat, and gloves. A raincoat or umbrella is worth packing everywhere during the summer monsoon.