In December warmest sea in Sumatra is usually observed in the following locations: Sentosa, Pangkor, Kuala Lumpur.
Table below shows the average sea water temperature for marine resorts of Sumatra in December for the last three years.
| Place name | December 2025 | December 2024 | December 2023 |
|---|---|---|---|
| Sentosa | 85.0°F | 84.4°F | 84.6°F |
| Pangkor | 84.9°F | 85.1°F | 85.6°F |
| Kuala Lumpur | 84.8°F | 85.3°F | 85.7°F |
| Malacca | 84.7°F | 84.9°F | 85.2°F |
| Singapore | 84.7°F | 84.1°F | 84.3°F |
| Batam | 84.6°F | 84.2°F | 84.5°F |
| George Town | 84.5°F | 85.2°F | 85.0°F |
| Johor Bahrul | 84.3°F | 83.9°F | 84.0°F |
| Bintan | 84.3°F | 84.2°F | 84.3°F |
| Penang | 84.2°F | 85.3°F | 85.1°F |
| Batu Feringgi | 84.2°F | 85.3°F | 85.0°F |
| Medan | 83.5°F | 84.0°F | 83.7°F |
| Tioman | 83.4°F | 83.6°F | 83.8°F |
| Perhentian Islands | 83.1°F | 83.3°F | 83.5°F |
| Redang | 83.0°F | 83.4°F | 83.4°F |
| Kuala Terengganu | 82.9°F | 83.0°F | 83.2°F |
Charts below show average sea water temperature for Sumatra resorts with the warmest sea in December.
You can also check other months of the year to see sea temperature of Sumatra resorts at that time.
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