Con Dao Islands Weather, Con Son Island Weather, Best time to visit

Con Dao Islands have a tropical monsoon climate with two seasons per year: dry season from November or December through April, rainy season from May through October or November. The predominant wind during the rainy season is the south-westerly wind. The predominant rain during the dry season is northeasterly monsoon.

From November through February, the Con Dao Islands are under the influence of the northeasterly monsoon, the sea is rough and not clear which is not favorable for water activities: boat trips, scuba-diving… It is dry season and the best things to do are mostly on the island and in the Con Dao National Park. The temperatures are pleasant during this time though, 28-29oC.

A cafe on Con Dao Island Vietnam
A cafe on Con Dao Island Vietnam

The hottest month of the year is April and May when for several weeks the temperatures reach 35oC-36oC or more daily. The sea is often calm during this time, it is great for water sports.

It rains more at the end of the rainy season in August, September, October. The averaged annual rainfall on the Con Dao Islands is 2,300mm.

Con Dao Islands is not often hit by typhoons or tropical depressions. If any, the time for possible typhoons and tropical depression is from late October to early January.

Con Dao Islands’ weather by month
January
February
March
April
May: clouds, sun, 29-31oC.
June: clouds and rains, 28-30oC.
July: some sun, clouds and rains mostly, some days with rough sea and strong southwesterly wind, 27-29oC.
August: Torrential rains mostly, strong southwesterly wind, rough sea, 25-29oC.
September
October
November
December

The best time to visit Con Dao
The best time to visit Con Dao is from March through September most of which is in the rainy season. But the daily rains last for 30 minutes to less than 1 hour only. Sometimes the south-westerly wind is strong and the sea is rough, but often the sea is much calmer in this period than during the dry season.

From May to October is the season the sea turtles nest and hatch on the islands of Con Dao. This is a great time for taking tours to learn more about this amazing sea creature.