The Thailand resorts with the warmest sea water temperature at this moment are Ko Li Pe, Pattani and Bangkok.
Below you can see a list of all popular Thailand resorts and information about current sea water temperature and averages for current and next months.
| Resort Name | Current Sea Water Temperature |
September 2025 | October 2025 |
|---|---|---|---|
| Ko Li Pe | 90.0°F | 89.8°F | 89.2°F |
| Pattani | 89.8°F | 89.5°F | 88.8°F |
| Bangkok | 89.8°F | 88.8°F | 88.7°F |
| Koh Lan | 89.6°F | 88.8°F | 88.7°F |
| Pattaya | 89.6°F | 88.6°F | 88.6°F |
| Hua Hin | 89.6°F | 89.1°F | 89.3°F |
| Cha-am | 89.4°F | 89.1°F | 89.5°F |
| Hat Yai | 89.4°F | 90.0°F | 89.6°F |
| Jomtien | 89.4°F | 88.6°F | 88.6°F |
| Taling Ngam Beach | 89.2°F | 88.9°F | 88.9°F |
| Lamai Beach | 89.2°F | 89.0°F | 88.9°F |
| Ko Phangan | 89.0°F | 88.6°F | 88.6°F |
| Samui | 89.0°F | 88.8°F | 88.8°F |
| Phangan | 89.0°F | 88.6°F | 88.6°F |
| Choeng Mon Beach | 89.0°F | 88.7°F | 88.7°F |
| Chaweng Beach | 89.0°F | 88.9°F | 88.8°F |
| Bo Phut Beach | 89.0°F | 88.7°F | 88.7°F |
| Mae Nam Beach | 89.0°F | 88.7°F | 88.7°F |
| Narathiwat | 88.8°F | 89.9°F | 89.0°F |
| Phi Phi | 88.8°F | 88.6°F | 88.9°F |
| Krabi | 88.6°F | 88.6°F | 89.1°F |
| Cape Panwa | 88.6°F | 88.1°F | 88.4°F |
| Surat Thani | 88.4°F | 88.5°F | 88.4°F |
| Rawai Beach | 88.4°F | 87.8°F | 88.0°F |
| Nai Harn Beach | 88.4°F | 87.8°F | 88.0°F |
| Phuket | 88.2°F | 87.8°F | 88.2°F |
| Karon Beach | 88.2°F | 87.7°F | 88.0°F |
| Kalim Beach | 88.2°F | 87.7°F | 88.1°F |
| Patong Beach | 88.2°F | 87.7°F | 88.0°F |
| Tao | 88.2°F | 88.5°F | 88.5°F |
| Rayong | 88.2°F | 88.4°F | 88.8°F |
| Kata Beach | 88.2°F | 87.7°F | 88.0°F |
| Kamala Beach | 88.0°F | 87.7°F | 88.1°F |
| Nai Yang Beach | 88.0°F | 87.8°F | 88.3°F |
| Bang Tao Beach | 88.0°F | 87.7°F | 88.1°F |
| Surin Beach | 88.0°F | 87.7°F | 88.1°F |
| Chumphon | 88.0°F | 87.7°F | 88.3°F |
| Samet | 88.0°F | 88.2°F | 89.0°F |
| Mai Khao Beach | 87.8°F | 87.8°F | 88.3°F |
| Prachuap Khiri Khan | 87.8°F | 87.9°F | 88.7°F |
| Koh Lanta | 87.8°F | 88.8°F | 89.3°F |
| Khao Lak | 87.2°F | 87.5°F | 87.9°F |
| Similan | 87.0°F | 87.0°F | 87.7°F |
| Trat | 87.0°F | 88.0°F | 88.6°F |
| Koh Kood | 87.0°F | 88.0°F | 88.5°F |
| Ko Wai | 86.8°F | 88.1°F | 88.8°F |
| Ko Mak | 86.8°F | 88.1°F | 88.7°F |
| Koh Chang | 86.8°F | 88.2°F | 88.8°F |
Please see following sea water temperature averages charts for the warmest Thailand resorts for more details.
You can also get the same information for the every other month of the year when the average sea water temperature is greater then 70°F.
Thailand Resorts:
NAME
F°
| Bang Tao Beach |  |
+84 |
| Bangkok |  |
+80 |
| Cape Panwa | |
+84 |
| Hua Hin | |
+80 |
| Karon Beach | |
+84 |
| Kata Beach | |
+84 |
| Khao Lak | |
+82 |
| Koh Chang | |
+86 |
| Nai Yang Beach | |
+84 |
| Pattaya | |
+78 |
| Phangan | |
+86 |
| Phi Phi | |
+86 |
| Phuket | |
+84 |
| Samet | |
+86 |
| Samui | |
+86 |
