At this moment warmest sea in Sumatra was observed in the following locations: Perhentian Islands, Redang, Penang.
You can find the full list of Sumatra marine locations in the table below. It shows current sea temperature values and averages for current and upcoming months.
| Place name | Current sea temp |
October 2025 | November 2025 |
|---|---|---|---|
| Perhentian Islands | 86.7°F | 85.5°F | 84.2°F |
| Redang | 86.7°F | 85.5°F | 84.5°F |
| Penang | 86.5°F | 85.8°F | 85.1°F |
| Batu Feringgi | 86.4°F | 85.8°F | 85.1°F |
| George Town | 86.4°F | 85.7°F | 85.3°F |
| Pangkor | 86.4°F | 85.8°F | 85.2°F |
| Kuala Lumpur | 86.4°F | 85.6°F | 85.2°F |
| Malacca | 86.2°F | 85.5°F | 85.3°F |
| Sentosa | 85.8°F | 85.2°F | 85.9°F |
| Singapore | 85.6°F | 85.2°F | 85.5°F |
| Kuala Terengganu | 85.5°F | 85.5°F | 84.5°F |
| Bintan | 85.5°F | 85.4°F | 84.9°F |
| Johor Bahrul | 85.3°F | 84.9°F | 85.2°F |
| Batam | 85.3°F | 85.0°F | 85.4°F |
| Medan | 85.1°F | 85.0°F | 84.5°F |
| Padang | 85.1°F | 84.4°F | 84.5°F |
| Tioman | 85.1°F | 85.3°F | 85.4°F |
| Jakarta | 85.1°F | 85.5°F | 85.0°F |
Charts below show average sea water temperature for Sumatra resorts with the warmest sea.
You can also check other months of the year to see sea temperature of Sumatra resorts at that time.
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