The Thailand resorts with the warmest sea water temperature at this moment are Narathiwat, Hat Yai and Pattani.
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 |
August 2025 | September 2025 |
|---|---|---|---|
| Narathiwat | 91.6°F | 90.3°F | 89.9°F |
| Hat Yai | 91.0°F | 90.6°F | 90.0°F |
| Pattani | 90.8°F | 90.3°F | 89.5°F |
| Ko Li Pe | 90.6°F | 90.8°F | 89.8°F |
| Bangkok | 90.6°F | 89.3°F | 88.8°F |
| Krabi | 90.2°F | 89.9°F | 88.6°F |
| Cha-am | 89.8°F | 90.0°F | 89.1°F |
| Koh Lanta | 89.8°F | 90.2°F | 88.8°F |
| Ko Phangan | 89.6°F | 89.3°F | 88.6°F |
| Koh Lan | 89.6°F | 89.5°F | 88.8°F |
| Phangan | 89.6°F | 89.3°F | 88.6°F |
| Pattaya | 89.6°F | 89.3°F | 88.6°F |
| Cape Panwa | 89.6°F | 89.7°F | 88.1°F |
| Phi Phi | 89.6°F | 90.2°F | 88.6°F |
| Hua Hin | 89.6°F | 89.4°F | 89.1°F |
| Jomtien | 89.6°F | 89.3°F | 88.6°F |
| Phuket | 89.4°F | 89.6°F | 87.8°F |
| Samui | 89.4°F | 89.4°F | 88.8°F |
| Choeng Mon Beach | 89.4°F | 89.4°F | 88.7°F |
| Bo Phut Beach | 89.4°F | 89.3°F | 88.7°F |
| Chaweng Beach | 89.4°F | 89.5°F | 88.9°F |
| Taling Ngam Beach | 89.4°F | 89.4°F | 88.9°F |
| Mae Nam Beach | 89.4°F | 89.3°F | 88.7°F |
| Lamai Beach | 89.4°F | 89.5°F | 89.0°F |
| Kata Beach | 89.2°F | 89.5°F | 87.7°F |
| Karon Beach | 89.2°F | 89.5°F | 87.7°F |
| Kamala Beach | 89.2°F | 89.5°F | 87.7°F |
| Khao Lak | 89.2°F | 88.7°F | 87.5°F |
| Nai Harn Beach | 89.2°F | 89.6°F | 87.8°F |
| Patong Beach | 89.2°F | 89.5°F | 87.7°F |
| Surin Beach | 89.2°F | 89.5°F | 87.7°F |
| Kalim Beach | 89.2°F | 89.5°F | 87.7°F |
| Bang Tao Beach | 89.2°F | 89.5°F | 87.7°F |
| Samet | 89.2°F | 89.3°F | 88.2°F |
| Rawai Beach | 89.2°F | 89.6°F | 87.8°F |
| Rayong | 89.2°F | 89.2°F | 88.4°F |
| Nai Yang Beach | 89.0°F | 89.5°F | 87.8°F |
| Surat Thani | 89.0°F | 89.2°F | 88.5°F |
| Koh Chang | 89.0°F | 89.0°F | 88.2°F |
| Mai Khao Beach | 88.8°F | 89.5°F | 87.8°F |
| Trat | 88.8°F | 89.0°F | 88.0°F |
| Similan | 88.8°F | 88.7°F | 87.0°F |
| Ko Wai | 88.6°F | 88.9°F | 88.1°F |
| Tao | 88.6°F | 89.3°F | 88.5°F |
| Ko Mak | 88.4°F | 88.9°F | 88.1°F |
| Chumphon | 88.4°F | 88.6°F | 87.7°F |
| Koh Kood | 88.4°F | 88.9°F | 88.0°F |
| Prachuap Khiri Khan | 88.2°F | 88.3°F | 87.9°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 |  |
+86 |
| Bangkok | |
+86 |
| Cape Panwa | |
+86 |
| Hua Hin | |
+86 |
| Karon Beach | |
+86 |
| Kata Beach | |
+86 |
| Khao Lak | |
+84 |
| Koh Chang |  |
+86 |
| Nai Yang Beach | |
+86 |
| Pattaya | |
+84 |
| Phangan | |
+86 |
| Phi Phi | |
+88 |
| Phuket | |
+86 |
| Samet | |
+86 |
| Samui | |
+86 |
