At this moment warmest sea in Gulf of Thailand was observed in the following locations: Koh Kong, Trat, Koh Chang.
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 |
April 2025 | May 2025 |
|---|---|---|---|
| Koh Kong | 89.4°F | 87.4°F | 87.5°F |
| Trat | 89.2°F | 87.6°F | 87.9°F |
| Koh Chang | 88.5°F | 86.8°F | 87.7°F |
| Ko Wai | 88.3°F | 86.6°F | 87.8°F |
| Samet | 88.3°F | 86.9°F | 88.0°F |
| Ko Mak | 88.2°F | 86.4°F | 87.8°F |
| Rayong | 88.2°F | 86.9°F | 87.9°F |
| Surat Thani | 88.0°F | 87.2°F | 87.1°F |
| Chumphon | 87.8°F | 86.8°F | 87.2°F |
| Jomtien | 87.8°F | 86.2°F | 87.3°F |
| Pattaya | 87.8°F | 86.2°F | 87.3°F |
| Phu Quoc | 87.6°F | 86.5°F | 87.9°F |
| Sihanoukville | 87.6°F | 86.8°F | 87.8°F |
| Koh Dek Koule | 87.6°F | 86.8°F | 87.8°F |
| Koh Rong | 87.6°F | 86.7°F | 87.9°F |
| Cha-am | 87.6°F | 87.1°F | 87.6°F |
| Koh Lanta | 87.4°F | 87.4°F | 86.6°F |
| Hua Hin | 87.4°F | 86.8°F | 87.7°F |
| Koh Kood | 87.4°F | 86.7°F | 87.7°F |
| Hat Yai | 87.3°F | 87.2°F | 87.4°F |
| Taling Ngam Beach | 87.3°F | 86.6°F | 87.1°F |
| Bo Phut Beach | 87.1°F | 86.5°F | 87.1°F |
| Mae Nam Beach | 87.1°F | 86.5°F | 87.1°F |
| Phangan | 87.1°F | 86.5°F | 87.2°F |
| Bangkok | 87.1°F | 86.4°F | 87.3°F |
| Ko Phangan | 86.9°F | 86.4°F | 87.2°F |
| Samui | 86.9°F | 86.4°F | 87.1°F |
| Choeng Mon Beach | 86.7°F | 86.4°F | 87.1°F |
| Koh Lan | 86.7°F | 86.1°F | 87.3°F |
| Chaweng Beach | 86.7°F | 86.4°F | 87.1°F |
| Lamai Beach | 86.7°F | 86.4°F | 87.2°F |
| Pattani | 86.4°F | 86.2°F | 87.1°F |
| Tao | 86.4°F | 86.1°F | 87.1°F |
| Prachuap Khiri Khan | 86.4°F | 85.8°F | 86.8°F |
| Ko Li Pe | 86.4°F | 86.4°F | 86.9°F |
| Narathiwat | 86.0°F | 85.8°F | 87.0°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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