Weather in Laos in september
Country-wide climate normals across 15 cities in Laos.
How Hot Is Laos in september?
Uniform heat across Laos's September: averages climb to 29°C nationally with overnight lows of 22°C, narrow spread from coast to interior. The hottest cities like Thakhèk register similar readings to the coolest, so plan for consistently hot weather across the country.
Sunshine in Laos in september
Dark, overcast days dominate Laos in September — Vientiane sees just 1.0h of sun a day, and the pattern is similar across most regions. Cloud cover is heavy and persistent, with even the brighter regions struggling to escape the gloom for long.
Does It Rain In Laos In september?
Laos is in the heart of its rainy season: Vientiane measures 330mm of rain across 24 days in September, and the pattern repeats across nearly all regions. Persistent heavy rain, occasional thunderstorms, and saturated air define the entire country's weather.
Is Laos Humid In september?
Laos is enveloped in tropical-thick humidity through September: Vientiane averages 84%, and most of the country tracks similarly. The constant moisture makes warm temperatures feel substantially hotter, and even nights bring limited cooling. Light cotton clothing is essential.
Wind In Laos In september
Laos's air is mostly calm in September: Vientiane averages 8 kph, similar across the country. Only coastal and exposed regions see slightly more breeze. Most days feel still and untroubled.
Cloud Cover In Laos In september
Heavy overcast covers Laos in September: 78% cloud cover in Vientiane, with similar grey conditions in most regions. Direct sun is rare, and the pattern is persistent across the country. Coastal and northern regions feel especially heavy.