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What is the average water temperature in the Similan Islands in October?

October Offers
October Offers

The average temperature of the water in the Similan Islands in October is about 29°C, or 84°F.

October 2023 saw a drop in that temperature, against the historical norm. The very lowest temperature recorded on a dive was 24°C by our team, although that is not expected again going forward.

In detail:

The sea water temperature in the Similan Islands is usually stable at 29°C or 84°F in October.

The historic average October water temperature for the Similan Islands is 29°C, ranging from 27.7°C to 29.9°C.

Other sources also confirm that during October, the average water temperature in the Similan Islands holds at approximately 28-29°C (82-84°F).