The Thailand resorts with the warmest sea water temperature in April are Trat, Koh Lanta and Krabi.
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 2025 | April 2024 | April 2023 |
|---|---|---|---|
| Trat | 91.7°F | 94.1°F | 92.4°F |
| Koh Lanta | 91.6°F | 93.2°F | 91.6°F |
| Krabi | 91.4°F | 93.2°F | 91.0°F |
| Surat Thani | 91.3°F | 92.5°F | 91.4°F |
| Hat Yai | 91.3°F | 93.0°F | 91.4°F |
| Cha-am | 91.2°F | 92.5°F | 91.3°F |
| Samet | 91.0°F | 93.1°F | 91.5°F |
| Rayong | 91.0°F | 93.3°F | 91.7°F |
| Koh Chang | 90.9°F | 93.6°F | 91.7°F |
| Hua Hin | 90.9°F | 92.3°F | 91.0°F |
| Chumphon | 90.8°F | 93.8°F | 91.0°F |
| Phi Phi | 90.8°F | 92.1°F | 90.2°F |
| Koh Kood | 90.7°F | 92.9°F | 91.5°F |
| Taling Ngam Beach | 90.7°F | 92.6°F | 90.3°F |
| Ko Wai | 90.6°F | 93.3°F | 91.5°F |
| Phangan | 90.6°F | 92.2°F | 90.8°F |
| Bo Phut Beach | 90.5°F | 92.4°F | 90.4°F |
| Mae Nam Beach | 90.5°F | 92.4°F | 90.4°F |
| Similan | 90.5°F | 91.2°F | 89.7°F |
| Ko Li Pe | 90.5°F | 91.9°F | 90.0°F |
| Samui | 90.5°F | 92.3°F | 90.3°F |
| Bangkok | 90.5°F | 92.2°F | 90.6°F |
| Ko Phangan | 90.5°F | 92.1°F | 90.6°F |
| Lamai Beach | 90.5°F | 92.3°F | 90.1°F |
| Mai Khao Beach | 90.5°F | 91.7°F | 89.9°F |
| Nai Yang Beach | 90.5°F | 91.6°F | 89.8°F |
| Ko Mak | 90.5°F | 93.0°F | 91.3°F |
| Choeng Mon Beach | 90.5°F | 92.3°F | 90.2°F |
| Chaweng Beach | 90.5°F | 92.3°F | 90.2°F |
| Phuket | 90.4°F | 91.7°F | 89.8°F |
| Cape Panwa | 90.4°F | 91.8°F | 89.7°F |
| Surin Beach | 90.3°F | 91.5°F | 89.7°F |
| Kamala Beach | 90.3°F | 91.5°F | 89.7°F |
| Bang Tao Beach | 90.3°F | 91.5°F | 89.7°F |
| Khao Lak | 90.3°F | 91.3°F | 89.8°F |
| Kalim Beach | 90.3°F | 91.4°F | 89.6°F |
| Pattani | 90.2°F | 91.7°F | 90.5°F |
| Jomtien | 90.2°F | 92.4°F | 90.8°F |
| Pattaya | 90.2°F | 92.4°F | 90.8°F |
| Patong Beach | 90.2°F | 91.3°F | 89.5°F |
| Tao | 90.1°F | 91.6°F | 90.4°F |
| Koh Lan | 90.1°F | 92.0°F | 90.4°F |
| Rawai Beach | 90.1°F | 91.4°F | 89.4°F |
| Nai Harn Beach | 90.1°F | 91.4°F | 89.4°F |
| Karon Beach | 90.1°F | 91.3°F | 89.4°F |
| Kata Beach | 90.1°F | 91.3°F | 89.4°F |
| Narathiwat | 89.8°F | 91.7°F | 90.6°F |
| Prachuap Khiri Khan | 89.8°F | 91.4°F | 90.2°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°
| Bang Tao Beach |  |
+88 |
| Bangkok |  |
+82 |
| Karon Beach | |
+88 |
| Kata Beach | |
+88 |
| Khao Lak | |
+84 |
| Ko Li Pe | |
+84 |
| Koh Chang | |
+84 |
| Krabi | |
+86 |
| Patong Beach | |
+88 |
| Pattaya |  |
+88 |
| Phi Phi | |
+84 |
| Phuket | |
+88 |
| Samet | |
+84 |
| Samui | |
+84 |
| Similan | |
+84 |
