Climate averages 1991–2020

Weather in Laos.

ClimaNote covers 4 cities in Laos, starting with Vientiane, Savannakhet and Thakhèk. Open a city for charts and a table of all 12 months.

Across these cities the yearly average high ranges from 30.0°C in Vientiane (tied with Thakhèk) to 30.7°C in Pakse, and yearly rainfall from 1,478 mm in Savannakhet to 2,189 mm in Thakhèk. The hottest city-month is April in Pakse, with an average high of 33.9°C, and the coolest is December in Vientiane, at 26.9°C. By single month, the most rain falls in August in Thakhèk, with 493 mm, and the least in January in Pakse, with 1.9 mm.

April is the warmest month in every city; December is the coolest in 3 cities and September in 1. August is the wettest month in every city; January is the driest in 2 cities and December in 2. Of these cities, 3 have a month with more than 300 mm of rain; none has a month with an average high below 2.0°C or a month with under 1 mm of rain.