Climate and region of Con Dao
Con Dao is a small island group off the southeastern coast of Vietnam, located 230 km from Ho Chi Minh City. It is known for its pristine beaches, national parks, and historical sites, making it a unique but remote destination.
The tropical monsoon climate of Con Dao is divided into:
- Dry season (November to April): Mostly sunny, dry, and calm, making it the best time for outdoor activities.
- Rainy season (May to October): Characterized by higher humidity, frequent tropical showers, and cloudy skies, though the sea remains relatively calm compared to other parts of Vietnam.
September is still in the rainy season, meaning daily rain showers and overcast conditions are expected.
Weather in Con Dao in September
September is warm and humid, with temperatures ranging from 26°C to 31°C (79°F to 88°F). The humidity remains high, making the air feel even warmer.
Rain is frequent, especially in the afternoons or evenings, often in the form of heavy but short tropical downpours lasting 30 minutes to an hour. There may still be occasional sunny spells, but expect cloudy and overcast skies most days.
Despite the rain, the sea remains relatively calm, and diving conditions are still good, though visibility may be affected after heavy rainfall.
Beach holiday or not?
No, September is not an ideal month for a beach holiday in Con Dao. While the island’s beaches remain beautiful, the frequent rain, cloudy skies, and high humidity make sunbathing and swimming less enjoyable.
To check the best months for visiting Con Dao, see Con Dao weather from month to month.
Diving in Con Dao in September
Diving is one of the main reasons people visit Con Dao, and September is still within the high season for diving (March to September). While the rainy season can bring overcast skies and occasional reduced visibility, the sea remains calm, and marine life is still active.
Divers can expect to see healthy coral reefs, large schools of fish, rays, and sea turtles, especially at sites like Bay Canh Island, Hon Tai, and Tre Lon Island. Though visibility might be affected after storms, diving conditions remain generally good.
For a complete diving guide, check our guide to diving in Con Dao.
Turtle watching season
Yes, September is one of the best months for turtle watching in Con Dao. The green sea turtles and hawksbill turtles are in the final peak of their nesting season, which runs from late May to October.
Visitors can witness turtles coming ashore at night to lay eggs, as well as hatchlings emerging and making their way to the sea. Conservation programs on Bay Canh Island and Hon Cau Island offer guided experiences to observe these incredible creatures.
For more details, check our guide to Con Dao’s turtles.
Is Con Dao worth visiting in September?
Con Dao is not ideal for a general visit in September, but it is still worth considering for diving or turtle watching.
- Not a good month for a beach holiday: Due to frequent rain, overcast skies, and high humidity.
- Diving is still possible: The sea remains calm, though visibility may be affected by occasional storms.
- Turtle watching is excellent: September is still one of the best months to see turtles nesting and hatching.
