September · Vietnam
Best time to visit Ba Be Lake in September Weather, crowds & prices
Weather in Ba Be Lake in September
Average temperature 25°C, 240 mm of rain, about 16 days with 6+ hours of sunshine and 85% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
4.6/10
Ranked #10 of 12 months
- Avg temp
- 25°C
- Rainfall
- 240 mm
- Humidity
- 85%
- Days with 6h+ sun
- 16
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Ba Be Lake scores 4.6/10 for nature and wildlife travel - ranked #10 of 12. Expect around 25°C, 240 mm of rain, and roughly 16 days with 6+ hours of sunshine this month.
Vietnam's largest natural freshwater lake surrounded by primary rainforest and Tay stilt villages.
September in Ba Be Lake: expect compromises
Trail conditions at 25°C (77°F) favour early starts and shaded routes in September; midday is for water breaks, not for exposed climbs.
Expect monsoon-level rainfall at 240 mm: only about 16 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 4.6/10 on the same scale — 10th of 12 months, versus 7.4/10 for the best month here.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, March is materially better in Ba Be Lake — 2.8 points higher on the same scale.
Frequently asked
- What is the weather like in Ba Be Lake in September?
- In September, Ba Be Lake averages 25°C, 240 mm of rain, and about 16 days with 6+ hours of sunshine. Its climate-comfort score is 4.6/10.
- Is September a good time to visit Ba Be Lake?
- September earns a 4.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Ba Be Lake in September?
- Expect about 240 mm of rain in September. Average humidity is 85% and there are about 16 days with 6+ hours of sunshine.
Curated in Ba Be Lake
Tickets & experiences
Things to do in Ba Be Lake
Ba Be Lake, Vietnam. Live activities and tours from GetYourGuide, matched to this destination.