The Thailand resorts with the warmest sea water temperature in April are Trat, Koh Lanta and Koh Chang.
Below you can see a list of all popular Thailand resorts and information about sea water temperature in April for the last two years.
| Resort Name | April 2019 | April 2018 | April 2017 |
|---|---|---|---|
| Trat | 93.3°F | 90.7°F | 91.5°F |
| Koh Lanta | 92.8°F | 91.4°F | 91.0°F |
| Koh Chang | 92.7°F | 90.0°F | 90.9°F |
| Hat Yai | 92.6°F | 90.2°F | 90.8°F |
| Chumphon | 92.6°F | 90.6°F | 90.3°F |
| Ko Wai | 92.5°F | 90.1°F | 90.9°F |
| Rayong | 92.4°F | 90.6°F | 90.6°F |
| Samet | 92.3°F | 90.3°F | 90.7°F |
| Taling Ngam Beach | 92.3°F | 90.0°F | 90.4°F |
| Krabi | 92.3°F | 91.3°F | 90.9°F |
| Cha-am | 92.2°F | 90.2°F | 90.5°F |
| Ko Mak | 92.2°F | 90.1°F | 90.8°F |
| Koh Kood | 92.0°F | 90.0°F | 90.7°F |
| Mae Nam Beach | 92.0°F | 89.8°F | 90.2°F |
| Bo Phut Beach | 92.0°F | 89.8°F | 90.2°F |
| Samui | 91.9°F | 89.7°F | 90.1°F |
| Hua Hin | 91.9°F | 89.9°F | 90.5°F |
| Lamai Beach | 91.9°F | 89.8°F | 90.1°F |
| Phangan | 91.9°F | 89.8°F | 90.2°F |
| Chaweng Beach | 91.9°F | 89.7°F | 90.1°F |
| Choeng Mon Beach | 91.9°F | 89.7°F | 90.1°F |
| Bangkok | 91.8°F | 90.2°F | 90.7°F |
| Ko Phangan | 91.7°F | 89.7°F | 90.2°F |
| Surat Thani | 91.7°F | 91.0°F | 91.0°F |
| Phi Phi | 91.7°F | 91.0°F | 90.8°F |
| Ko Li Pe | 91.6°F | 90.4°F | 90.4°F |
| Jomtien | 91.5°F | 90.1°F | 90.3°F |
| Pattaya | 91.5°F | 90.1°F | 90.4°F |
| Tao | 91.4°F | 89.6°F | 90.0°F |
| Cape Panwa | 91.4°F | 90.9°F | 90.4°F |
| Koh Lan | 91.3°F | 89.9°F | 90.3°F |
| Phuket | 91.3°F | 90.9°F | 90.1°F |
| Prachuap Khiri Khan | 91.3°F | 89.6°F | 89.9°F |
| Similan | 91.3°F | 90.4°F | 89.7°F |
| Mai Khao Beach | 91.3°F | 90.9°F | 90.0°F |
| Nai Yang Beach | 91.2°F | 90.9°F | 90.0°F |
| Surin Beach | 91.1°F | 90.8°F | 90.0°F |
| Bang Tao Beach | 91.1°F | 90.8°F | 90.0°F |
| Kamala Beach | 91.1°F | 90.8°F | 90.0°F |
| Kalim Beach | 91.1°F | 90.7°F | 89.9°F |
| Nai Harn Beach | 91.1°F | 90.6°F | 90.0°F |
| Rawai Beach | 91.1°F | 90.6°F | 90.0°F |
| Pattani | 91.1°F | 89.2°F | 89.9°F |
| Khao Lak | 91.1°F | 90.8°F | 89.8°F |
| Patong Beach | 91.1°F | 90.7°F | 89.9°F |
| Kata Beach | 91.0°F | 90.6°F | 89.9°F |
| Karon Beach | 91.0°F | 90.6°F | 89.9°F |
| Narathiwat | 90.6°F | 89.0°F | 89.7°F |
Please see following sea water temperature averages charts for the warmest Thailand resorts in April.
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 |
| Chumphon | |
+76 |
| Hua Hin |  |
+74 |
| Koh Chang | |
+82 |
| Krabi | |
+80 |
| Narathiwat |  |
+80 |
| Pattani | |
+76 |
| Pattaya | |
+80 |
| Phi Phi | |
+84 |
| Phuket |  |
+82 |
| Prachuap Khiri Khan | |
+74 |
| Rayong | |
+82 |
| Samet | |
+74 |
| Samui | |
+70 |
| Surat Thani | |
+78 |
