At this moment warmest sea in Gulf of Thailand was observed in the following locations: Ko Li Pe, Koh Lanta, Pattani.
You can find the full list of Gulf of Thailand marine locations in the table below. It shows current sea temperature values and averages for current and upcoming months.
| Place name | Current sea temp |
September 2025 | October 2025 |
|---|---|---|---|
| Ko Li Pe | 86.7°F | 85.8°F | 85.2°F |
| Koh Lanta | 86.4°F | 84.9°F | 85.3°F |
| Pattani | 86.4°F | 85.5°F | 84.9°F |
| Phu Quoc | 86.2°F | 84.0°F | 84.6°F |
| Narathiwat | 86.2°F | 85.9°F | 85.1°F |
| Cha-am | 85.8°F | 85.2°F | 85.5°F |
| Hat Yai | 85.8°F | 86.0°F | 85.7°F |
| Bangkok | 85.6°F | 84.9°F | 84.8°F |
| Taling Ngam Beach | 85.5°F | 85.0°F | 85.0°F |
| Hua Hin | 85.5°F | 85.2°F | 85.3°F |
| Koh Lan | 85.5°F | 84.9°F | 84.9°F |
| Chaweng Beach | 85.5°F | 85.0°F | 84.9°F |
| Lamai Beach | 85.5°F | 85.1°F | 85.0°F |
| Pattaya | 85.3°F | 84.8°F | 84.7°F |
| Bo Phut Beach | 85.3°F | 84.9°F | 84.9°F |
| Mae Nam Beach | 85.3°F | 84.9°F | 84.9°F |
| Choeng Mon Beach | 85.3°F | 84.9°F | 84.8°F |
| Samui | 85.3°F | 84.9°F | 84.9°F |
| Jomtien | 85.3°F | 84.7°F | 84.7°F |
| Rayong | 85.1°F | 84.5°F | 84.9°F |
| Samet | 85.1°F | 84.3°F | 85.1°F |
| Koh Rong | 85.1°F | 84.1°F | 84.9°F |
| Phangan | 84.9°F | 84.7°F | 84.7°F |
| Ko Phangan | 84.9°F | 84.7°F | 84.7°F |
| Ko Wai | 84.9°F | 84.3°F | 84.9°F |
| Ko Mak | 84.9°F | 84.3°F | 84.9°F |
| Trat | 84.9°F | 84.2°F | 84.8°F |
| Koh Kood | 84.9°F | 84.2°F | 84.6°F |
| Koh Kong | 84.9°F | 83.7°F | 84.4°F |
| Sihanoukville | 84.9°F | 84.1°F | 84.8°F |
| Surat Thani | 84.7°F | 84.6°F | 84.6°F |
| Koh Chang | 84.7°F | 84.4°F | 84.9°F |
| Koh Dek Koule | 84.7°F | 84.1°F | 84.8°F |
| Prachuap Khiri Khan | 84.6°F | 84.1°F | 84.9°F |
| Chumphon | 84.2°F | 83.9°F | 84.4°F |
| Tao | 83.8°F | 84.6°F | 84.7°F |
Charts below show average sea water temperature for Gulf of Thailand resorts with the warmest sea.
You can also check other months of the year to see sea temperature of Gulf of Thailand resorts at that time.
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