Vientiane Weather in May
Laos · 30-year monthly averages
⚠️ Challenging time to visit
May in Vientiane is hot, with average daytime highs around 34°C (92°F) and nighttime lows near 25°C (77°F). Expect roughly 226mm of precipitation spread over about 15 rainy days, and heavy rainfall is common — this is peak wet season territory.
Avg high
34°C
92°F
Avg low
25°C
77°F
Rainfall
226mm
very wet
Rainy days
15
days with ≥1mm
☀️ About 189 hours of sunshine over the month (~6h/day).
🎒 What to pack
- breathable summer clothing
- sunscreen, hat and sunglasses
- refillable water bottle
- compact umbrella or rain jacket
May vs the rest of the year
FAQ
- How hot is Vientiane in May?
- May in Vientiane is hot, with average daytime highs around 34°C (92°F) and nighttime lows near 25°C (77°F). Expect roughly 226mm of precipitation spread over about 15 rainy days, and heavy rainfall is common — this is peak wet season territory.
- Does it rain a lot in Vientiane in May?
- Vientiane sees around 226mm of precipitation in May on average — very wet by global standards.
- Is May a good time to visit Vientiane?
- May is a challenging month to visit Vientiane weather-wise — plan around the conditions.