The Thailand resorts with the warmest sea water temperature in April are Koh Lanta, Krabi and Surat Thani.
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 2018 | April 2017 | April 2016 |
|---|---|---|---|
| Koh Lanta | 91.4°F | 91.0°F | 91.8°F |
| Krabi | 91.3°F | 90.9°F | 91.7°F |
| Surat Thani | 91.0°F | 91.0°F | 92.2°F |
| Phi Phi | 91.0°F | 90.8°F | 91.4°F |
| Mai Khao Beach | 90.9°F | 90.0°F | 90.7°F |
| Nai Yang Beach | 90.9°F | 90.0°F | 90.7°F |
| Cape Panwa | 90.9°F | 90.4°F | 91.0°F |
| Phuket | 90.9°F | 90.1°F | 90.8°F |
| Kamala Beach | 90.8°F | 90.0°F | 90.6°F |
| Surin Beach | 90.8°F | 90.0°F | 90.6°F |
| Bang Tao Beach | 90.8°F | 90.0°F | 90.6°F |
| Khao Lak | 90.8°F | 89.8°F | 90.4°F |
| Trat | 90.7°F | 91.5°F | 92.2°F |
| Kalim Beach | 90.7°F | 89.9°F | 90.6°F |
| Patong Beach | 90.7°F | 89.9°F | 90.6°F |
| Nai Harn Beach | 90.6°F | 90.0°F | 90.7°F |
| Rawai Beach | 90.6°F | 90.0°F | 90.7°F |
| Chumphon | 90.6°F | 90.3°F | 91.3°F |
| Rayong | 90.6°F | 90.6°F | 91.3°F |
| Kata Beach | 90.6°F | 89.9°F | 90.6°F |
| Karon Beach | 90.6°F | 89.9°F | 90.6°F |
| Similan | 90.4°F | 89.7°F | 90.8°F |
| Ko Li Pe | 90.4°F | 90.4°F | 91.6°F |
| Samet | 90.3°F | 90.7°F | 91.5°F |
| Bangkok | 90.2°F | 90.7°F | 90.9°F |
| Hat Yai | 90.2°F | 90.8°F | 91.8°F |
| Cha-am | 90.2°F | 90.5°F | 90.9°F |
| Pattaya | 90.1°F | 90.4°F | 90.6°F |
| Ko Wai | 90.1°F | 90.9°F | 91.5°F |
| Jomtien | 90.1°F | 90.3°F | 90.6°F |
| Ko Mak | 90.1°F | 90.8°F | 91.5°F |
| Koh Kood | 90.0°F | 90.7°F | 91.4°F |
| Koh Chang | 90.0°F | 90.9°F | 91.4°F |
| Taling Ngam Beach | 90.0°F | 90.4°F | 91.7°F |
| Hua Hin | 89.9°F | 90.5°F | 90.8°F |
| Koh Lan | 89.9°F | 90.3°F | 90.5°F |
| Lamai Beach | 89.8°F | 90.1°F | 91.4°F |
| Mae Nam Beach | 89.8°F | 90.2°F | 91.4°F |
| Bo Phut Beach | 89.8°F | 90.2°F | 91.4°F |
| Phangan | 89.8°F | 90.2°F | 91.4°F |
| Samui | 89.7°F | 90.1°F | 91.4°F |
| Chaweng Beach | 89.7°F | 90.1°F | 91.3°F |
| Choeng Mon Beach | 89.7°F | 90.1°F | 91.4°F |
| Ko Phangan | 89.7°F | 90.2°F | 91.3°F |
| Prachuap Khiri Khan | 89.6°F | 89.9°F | 90.4°F |
| Tao | 89.6°F | 90.0°F | 90.9°F |
| Pattani | 89.2°F | 89.9°F | 90.7°F |
| Narathiwat | 89.0°F | 89.7°F | 90.4°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 |  |
+98 |
| Chumphon | |
+88 |
| Hua Hin |  |
+92 |
| Koh Chang |  |
+88 |
| Krabi |  |
+88 |
| Narathiwat | |
+88 |
| Pattani | |
+90 |
| Pattaya | |
+88 |
| Phi Phi | |
+86 |
| Phuket | |
+88 |
| Prachuap Khiri Khan | |
+90 |
| Rayong | |
+90 |
| Samet | |
+88 |
| Samui | |
+86 |
| Surat Thani | |
+90 |
