September · Laos
Best time to visit Wat Phou in September Weather, crowds & prices
Weather in Wat Phou in September
Average temperature 26°C, 402 mm of rain, about 14 days with 6+ hours of sunshine and 89% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
3.1/10
Ranked #12 of 12 months
- Avg temp
- 26°C
- Rainfall
- 402 mm
- Humidity
- 89%
- Days with 6h+ sun
- 14
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Wat Phou scores 3.1/10 for sightseeing and cultural travel - ranked #12 of 12. Expect around 26°C, 402 mm of rain, and roughly 14 days with 6+ hours of sunshine this month.
Ruined 10th-century Khmer Hindu temple complex located at the base of Mount Phu Kao overlooking the Mekong.
September in Wat Phou — the hardest end of the year
Days in September average 26°C (79°F) and humidity near 89% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Expect monsoon-level rainfall at 402 mm: only about 14 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 3.1/10 on the same scale — 12th of 12 months, versus 9/10 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.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, January is materially better in Wat Phou — 5.9 points higher on the same scale.
Frequently asked
- What is the weather like in Wat Phou in September?
- In September, Wat Phou averages 26°C, 402 mm of rain, and about 14 days with 6+ hours of sunshine. Its climate-comfort score is 3.1/10.
- Is September a good time to visit Wat Phou?
- September earns a 3.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Wat Phou in September?
- Expect about 402 mm of rain in September. Average humidity is 89% and there are about 14 days with 6+ hours of sunshine.
Curated in Wat Phou
Tickets & experiences
Things to do in Wat Phou
Wat Phou, Laos. Live activities and tours from GetYourGuide, matched to this destination.