March is peak season in Con Dao for underwater visibility — clear, warm water, calm seas, and abundant marine life make it one of the best diving destinations in Vietnam. The island is quiet and the national park feels genuinely remote.
Weather
- Temperature: 26–32°C (79–90°F)
- Conditions: Dry; calm; exceptional underwater clarity
Best Things to Do
- Diving and snorkelling (peak visibility)
- Beach relaxation at Dat Doc
- Con Dao National Park hiking