The Thailand resorts with the warmest sea water temperature at this moment are Hat Yai, Ko Wai and Trat.
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 |
March 2025 | April 2025 |
|---|---|---|---|
| Hat Yai | 91.2°F | 89.0°F | 91.3°F |
| Ko Wai | 91.2°F | 89.0°F | 90.6°F |
| Trat | 91.2°F | 89.8°F | 91.7°F |
| Ko Mak | 90.8°F | 88.9°F | 90.5°F |
| Rayong | 90.6°F | 89.0°F | 91.0°F |
| Koh Chang | 90.4°F | 89.1°F | 90.9°F |
| Samet | 90.4°F | 89.0°F | 91.0°F |
| Koh Kood | 90.2°F | 89.3°F | 90.7°F |
| Koh Lanta | 90.2°F | 89.5°F | 91.6°F |
| Krabi | 90.0°F | 89.5°F | 91.4°F |
| Cha-am | 89.8°F | 88.5°F | 91.2°F |
| Hua Hin | 89.4°F | 88.1°F | 90.9°F |
| Pattaya | 89.2°F | 88.0°F | 90.2°F |
| Jomtien | 89.2°F | 88.1°F | 90.2°F |
| Bo Phut Beach | 89.0°F | 88.5°F | 90.5°F |
| Mae Nam Beach | 89.0°F | 88.5°F | 90.5°F |
| Taling Ngam Beach | 89.0°F | 88.5°F | 90.7°F |
| Samui | 88.8°F | 88.5°F | 90.5°F |
| Phangan | 88.8°F | 88.5°F | 90.6°F |
| Bangkok | 88.8°F | 88.1°F | 90.5°F |
| Narathiwat | 88.8°F | 87.4°F | 89.8°F |
| Pattani | 88.8°F | 87.6°F | 90.2°F |
| Surat Thani | 88.8°F | 88.7°F | 91.3°F |
| Choeng Mon Beach | 88.8°F | 88.6°F | 90.5°F |
| Koh Lan | 88.6°F | 87.7°F | 90.1°F |
| Tao | 88.6°F | 88.5°F | 90.1°F |
| Ko Phangan | 88.6°F | 88.5°F | 90.5°F |
| Similan | 88.6°F | 89.3°F | 90.5°F |
| Prachuap Khiri Khan | 88.6°F | 87.4°F | 89.8°F |
| Chaweng Beach | 88.6°F | 88.5°F | 90.5°F |
| Phuket | 88.4°F | 89.5°F | 90.4°F |
| Surin Beach | 88.4°F | 89.4°F | 90.3°F |
| Lamai Beach | 88.4°F | 88.5°F | 90.5°F |
| Chumphon | 88.4°F | 89.0°F | 90.8°F |
| Kamala Beach | 88.4°F | 89.4°F | 90.3°F |
| Bang Tao Beach | 88.4°F | 89.4°F | 90.3°F |
| Phi Phi | 88.4°F | 89.2°F | 90.8°F |
| Patong Beach | 88.2°F | 89.2°F | 90.2°F |
| Mai Khao Beach | 88.2°F | 89.5°F | 90.5°F |
| Nai Yang Beach | 88.2°F | 89.5°F | 90.5°F |
| Karon Beach | 88.2°F | 89.1°F | 90.1°F |
| Kalim Beach | 88.2°F | 89.3°F | 90.3°F |
| Ko Li Pe | 88.2°F | 89.2°F | 90.5°F |
| Kata Beach | 88.2°F | 89.1°F | 90.1°F |
| Rawai Beach | 88.0°F | 89.0°F | 90.1°F |
| Nai Harn Beach | 88.0°F | 89.0°F | 90.1°F |
| Cape Panwa | 88.0°F | 89.3°F | 90.4°F |
| Khao Lak | 88.0°F | 89.7°F | 90.3°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°
| Bangkok |  |
+90 |
| Hua Hin | |
+82 |
| Karon Beach |  |
+82 |
| Kata Beach | |
+82 |
| Khao Lak |  |
+80 |
| Ko Li Pe |  |
+86 |
| Koh Chang | |
+86 |
| Krabi | |
+80 |
| Patong Beach | |
+82 |
| Pattaya | |
+84 |
| Phangan | |
+86 |
| Phi Phi | |
+84 |
| Phuket | |
+82 |
| Samet | |
+86 |
| Samui | |
+86 |
