September · Vietnam
Best time to visit Con Dao in September Weather, crowds & prices
Weather in Con Dao in September
Average temperature 29°C, 309 mm of rain, about 17 days with 6+ hours of sunshine and 82% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
5.8/10
Ranked #10 of 12 months
- Avg temp
- 29°C
- Rainfall
- 309 mm
- Humidity
- 82%
- Days with 6h+ sun
- 17
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Con Dao scores 5.8/10 for beach and coastal travel - ranked #10 of 12. Expect around 29°C, 309 mm of rain, and roughly 17 days with 6+ hours of sunshine this month.
Con Dao is a remote island chain of prison history, turtle beaches, and dive-clear South China Sea water. Best window: the drier months outside peak monsoon.
September in Con Dao: mixed conditions, plan around the weather
Days in September average 29°C (84°F) and humidity near 82% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Expect monsoon-level rainfall at 309 mm: only about 17 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 5.8/10 on the same scale — 10th of 12 months, versus 9.6/10 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, February is materially better in Con Dao — 3.8 points higher on the same scale.
Frequently asked
- What is the weather like in Con Dao in September?
- In September, Con Dao averages 29°C, 309 mm of rain, and about 17 days with 6+ hours of sunshine. Its climate-comfort score is 5.8/10.
- Is September a good time to visit Con Dao?
- September earns a 5.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Con Dao in September?
- Expect about 309 mm of rain in September. Average humidity is 82% and there are about 17 days with 6+ hours of sunshine.
Curated in Con Dao
Tickets & experiences
Things to do in Con Dao
Con Dao, Vietnam. Live activities and tours from GetYourGuide, matched to this destination.