September · Thailand
Best time to visit Kanchanaburi in September Weather, crowds & prices
Weather in Kanchanaburi in September
Average temperature 26°C, 241 mm of rain, about 17 days with 6+ hours of sunshine and 86% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
4.2/10
Ranked #12 of 12 months
- Avg temp
- 26°C
- Rainfall
- 241 mm
- Humidity
- 86%
- Days with 6h+ sun
- 17
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Kanchanaburi scores 4.2/10 for nature and wildlife travel - ranked #12 of 12. Expect around 26°C, 241 mm of rain, and roughly 17 days with 6+ hours of sunshine this month.
Kanchanaburi's river, wartime bridge and waterfalls sit west of Bangkok near the Myanmar border.
September in Kanchanaburi — off-season conditions
Days in September average 26°C (79°F) and humidity near 86% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Expect monsoon-level rainfall at 241 mm: only about 17 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 4.2/10 on the same scale — 12th of 12 months, versus 8.4/10 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, footwear you can get muddy.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, January is materially better in Kanchanaburi — 4.2 points higher on the same scale.
Frequently asked
- What is the weather like in Kanchanaburi in September?
- In September, Kanchanaburi averages 26°C, 241 mm of rain, and about 17 days with 6+ hours of sunshine. Its climate-comfort score is 4.2/10.
- Is September a good time to visit Kanchanaburi?
- September earns a 4.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Kanchanaburi in September?
- Expect about 241 mm of rain in September. Average humidity is 86% and there are about 17 days with 6+ hours of sunshine.
Curated in Kanchanaburi
Tickets & experiences
Things to do in Kanchanaburi
Kanchanaburi, Thailand. Live activities and tours from GetYourGuide, matched to this destination.