The Thailand resorts with the warmest sea water temperature at this moment are Rayong, Trat and Koh Lanta.
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 |
April 2025 | May 2025 |
|---|---|---|---|
| Rayong | 93.2°F | 91.0°F | 92.1°F |
| Trat | 93.2°F | 91.7°F | 92.2°F |
| Koh Lanta | 93.2°F | 91.6°F | 90.6°F |
| Chumphon | 93.0°F | 90.8°F | 91.3°F |
| Samet | 93.0°F | 91.0°F | 92.2°F |
| Koh Kood | 92.8°F | 90.7°F | 91.9°F |
| Surat Thani | 92.8°F | 91.3°F | 91.2°F |
| Ko Mak | 92.8°F | 90.5°F | 92.0°F |
| Hat Yai | 92.8°F | 91.3°F | 91.5°F |
| Cha-am | 92.6°F | 91.2°F | 91.8°F |
| Krabi | 92.6°F | 91.4°F | 90.8°F |
| Hua Hin | 92.4°F | 90.9°F | 91.8°F |
| Ko Wai | 92.4°F | 90.6°F | 92.0°F |
| Koh Chang | 92.4°F | 90.9°F | 91.8°F |
| Pattaya | 92.2°F | 90.2°F | 91.4°F |
| Jomtien | 92.2°F | 90.2°F | 91.4°F |
| Taling Ngam Beach | 92.2°F | 90.7°F | 91.3°F |
| Bangkok | 92.0°F | 90.5°F | 91.5°F |
| Tao | 92.0°F | 90.1°F | 91.2°F |
| Phangan | 92.0°F | 90.6°F | 91.4°F |
| Narathiwat | 92.0°F | 89.8°F | 91.1°F |
| Pattani | 92.0°F | 90.2°F | 91.3°F |
| Ko Phangan | 91.8°F | 90.5°F | 91.3°F |
| Ko Li Pe | 91.8°F | 90.5°F | 91.0°F |
| Lamai Beach | 91.8°F | 90.5°F | 91.3°F |
| Phi Phi | 91.6°F | 90.8°F | 90.8°F |
| Bo Phut Beach | 91.6°F | 90.5°F | 91.2°F |
| Mae Nam Beach | 91.6°F | 90.5°F | 91.2°F |
| Samui | 91.6°F | 90.5°F | 91.3°F |
| Chaweng Beach | 91.6°F | 90.5°F | 91.2°F |
| Khao Lak | 91.4°F | 90.3°F | 90.1°F |
| Koh Lan | 91.4°F | 90.1°F | 91.4°F |
| Choeng Mon Beach | 91.4°F | 90.5°F | 91.2°F |
| Mai Khao Beach | 91.2°F | 90.5°F | 90.4°F |
| Prachuap Khiri Khan | 91.2°F | 89.8°F | 90.8°F |
| Surin Beach | 91.0°F | 90.3°F | 90.5°F |
| Rawai Beach | 91.0°F | 90.1°F | 90.8°F |
| Patong Beach | 91.0°F | 90.2°F | 90.6°F |
| Nai Yang Beach | 91.0°F | 90.5°F | 90.4°F |
| Nai Harn Beach | 91.0°F | 90.1°F | 90.8°F |
| Cape Panwa | 91.0°F | 90.4°F | 91.1°F |
| Phuket | 91.0°F | 90.4°F | 90.6°F |
| Karon Beach | 91.0°F | 90.1°F | 90.7°F |
| Kamala Beach | 91.0°F | 90.3°F | 90.5°F |
| Kalim Beach | 91.0°F | 90.3°F | 90.6°F |
| Bang Tao Beach | 91.0°F | 90.3°F | 90.5°F |
| Similan | 91.0°F | 90.5°F | 90.4°F |
| Kata Beach | 91.0°F | 90.1°F | 90.7°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 |  |
+96 |
| Hua Hin | |
+92 |
| Karon Beach |  |
+88 |
| Kata Beach | |
+88 |
| Khao Lak |  |
+88 |
| Ko Li Pe |  |
+90 |
| Koh Chang | |
+88 |
| Krabi | |
+90 |
| Patong Beach | |
+88 |
| Pattaya | |
+92 |
| Phangan | |
+88 |
| Phi Phi | |
+90 |
| Phuket | |
+88 |
| Samet | |
+90 |
| Samui | |
+90 |
