The Thailand resorts with the warmest sea water temperature in October are Hat Yai, Cha-am and Koh Lanta.
Below you can see a list of all popular Thailand resorts and information about sea water temperature in October for the last two years.
| Resort Name | October 2025 | October 2024 | October 2023 |
|---|---|---|---|
| Hat Yai | 89.6°F | 90.0°F | 90.5°F |
| Cha-am | 89.5°F | 90.7°F | 90.0°F |
| Koh Lanta | 89.3°F | 89.8°F | 90.2°F |
| Hua Hin | 89.3°F | 90.6°F | 89.9°F |
| Ko Li Pe | 89.2°F | 90.1°F | 90.0°F |
| Krabi | 89.1°F | 89.2°F | 90.1°F |
| Narathiwat | 89.0°F | 89.5°F | 90.3°F |
| Samet | 89.0°F | 90.5°F | 89.6°F |
| Phi Phi | 88.9°F | 89.4°F | 89.7°F |
| Taling Ngam Beach | 88.9°F | 90.2°F | 89.8°F |
| Lamai Beach | 88.9°F | 90.1°F | 89.6°F |
| Koh Chang | 88.8°F | 90.4°F | 89.5°F |
| Chaweng Beach | 88.8°F | 89.9°F | 89.5°F |
| Rayong | 88.8°F | 90.5°F | 89.2°F |
| Ko Wai | 88.8°F | 90.1°F | 89.6°F |
| Pattani | 88.8°F | 89.3°F | 90.3°F |
| Samui | 88.8°F | 89.9°F | 89.5°F |
| Ko Mak | 88.7°F | 89.9°F | 89.6°F |
| Bo Phut Beach | 88.7°F | 89.9°F | 89.5°F |
| Mae Nam Beach | 88.7°F | 89.9°F | 89.5°F |
| Prachuap Khiri Khan | 88.7°F | 90.1°F | 89.0°F |
| Koh Lan | 88.7°F | 90.5°F | 89.6°F |
| Choeng Mon Beach | 88.7°F | 89.9°F | 89.5°F |
| Bangkok | 88.7°F | 90.0°F | 89.2°F |
| Trat | 88.6°F | 90.1°F | 89.3°F |
| Phangan | 88.6°F | 89.8°F | 89.3°F |
| Pattaya | 88.6°F | 90.2°F | 89.3°F |
| Ko Phangan | 88.6°F | 89.8°F | 89.3°F |
| Jomtien | 88.6°F | 90.1°F | 89.3°F |
| Tao | 88.5°F | 89.5°F | 89.0°F |
| Koh Kood | 88.5°F | 89.8°F | 89.6°F |
| Surat Thani | 88.4°F | 89.1°F | 88.9°F |
| Cape Panwa | 88.4°F | 89.1°F | 89.4°F |
| Mai Khao Beach | 88.3°F | 89.1°F | 89.0°F |
| Chumphon | 88.3°F | 89.7°F | 88.7°F |
| Nai Yang Beach | 88.3°F | 89.1°F | 89.0°F |
| Phuket | 88.2°F | 89.1°F | 89.2°F |
| Surin Beach | 88.1°F | 89.1°F | 89.1°F |
| Kamala Beach | 88.1°F | 89.1°F | 89.1°F |
| Bang Tao Beach | 88.1°F | 89.1°F | 89.1°F |
| Kalim Beach | 88.1°F | 89.0°F | 89.1°F |
| Rawai Beach | 88.0°F | 89.0°F | 89.2°F |
| Nai Harn Beach | 88.0°F | 89.0°F | 89.2°F |
| Patong Beach | 88.0°F | 89.0°F | 89.1°F |
| Karon Beach | 88.0°F | 89.0°F | 89.1°F |
| Kata Beach | 88.0°F | 89.0°F | 89.1°F |
| Khao Lak | 87.9°F | 88.6°F | 88.6°F |
| Similan | 87.7°F | 88.8°F | 88.4°F |
Please see following sea water temperature averages charts for the warmest Thailand resorts in October.
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 |
