September · Laos
Best time to visit Luang Prabang in September Weather, crowds & prices
Weather in Luang Prabang in September
Average temperature 26°C, 322 mm of rain, about 25 days with 6+ hours of sunshine and 91% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
3.7/10
Ranked #8 of 12 months
- Avg temp
- 26°C
- Rainfall
- 322 mm
- Humidity
- 91%
- Days with 6h+ sun
- 25
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Luang Prabang scores 3.7/10 for sightseeing and cultural travel - ranked #8 of 12. Expect around 26°C, 322 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
Luang Prabang's temples and colonial houses sit between the Mekong and Nam Khan rivers.
September in Luang Prabang — off-season conditions
Days in September average 26°C (79°F) and humidity near 91% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
This is the year's wettest stretch at 322 mm, but with about 25 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 3.7/10 on the same scale — 8th of 12 months, versus 9.5/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, December is materially better in Luang Prabang — 5.8 points higher on the same scale.
Frequently asked
- What is the weather like in Luang Prabang in September?
- In September, Luang Prabang averages 26°C, 322 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 3.7/10.
- Is September a good time to visit Luang Prabang?
- September earns a 3.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Luang Prabang in September?
- Expect about 322 mm of rain in September. Average humidity is 91% and there are about 25 days with 6+ hours of sunshine.
Curated in Luang Prabang
Tickets & experiences
Things to do in Luang Prabang
Luang Prabang, Laos. Live activities and tours from GetYourGuide, matched to this destination.