Climate in Laos

The climate throughout Laos is monsoonal. There are three distinct seasons with some variations between north and south. In general, it is wet between May and October and dry between November and April.

• The cool dry season occurs from November to January. In the Mekong valley, temperature can drop to around 15 degrees Celsius and the mountain temperature drop to zero degrees celsius or lower at night. Humidity is low at this time of the year and the most visitors consider it the best time to travel to Laos.
• The hot dry season follows through May. And toward the end of this period, there is high humidity and thunderstorms. Temperature can reach 35 degrees celsius.
• The wet season generally lasts from June until October. It is typified by a consistent pattern of low clouds and rain. Flooding occurs along the Mekong River and some tributaries. The average rainfall in the capital Vientiane is 1,700 mm, although in the north of Laos and the highlands it is wetter, with more than 3,000 mm each year.