The Thailand resorts with the warmest sea water temperature in December are Koh Kood, Koh Chang and Ko Mak.
Below you can see a list of all popular Thailand resorts and information about sea water temperature in December for the last two years.
| Resort Name | December 2019 | December 2018 | December 2017 |
|---|---|---|---|
| Koh Kood | 87.6°F | 88.9°F | 86.9°F |
| Koh Chang | 87.5°F | 88.8°F | 86.5°F |
| Ko Mak | 87.4°F | 88.6°F | 86.7°F |
| Khao Lak | 87.4°F | 88.8°F | 88.1°F |
| Ko Wai | 87.3°F | 88.6°F | 86.6°F |
| Nai Yang Beach | 87.2°F | 88.7°F | 88.0°F |
| Mai Khao Beach | 87.2°F | 88.7°F | 88.0°F |
| Bang Tao Beach | 87.2°F | 88.7°F | 88.1°F |
| Surin Beach | 87.2°F | 88.7°F | 88.1°F |
| Kamala Beach | 87.2°F | 88.7°F | 88.1°F |
| Kalim Beach | 87.2°F | 88.7°F | 88.1°F |
| Ko Li Pe | 87.2°F | 89.3°F | 88.5°F |
| Phuket | 87.2°F | 88.7°F | 88.0°F |
| Patong Beach | 87.1°F | 88.7°F | 88.1°F |
| Karon Beach | 87.1°F | 88.7°F | 88.1°F |
| Kata Beach | 87.1°F | 88.7°F | 88.1°F |
| Nai Harn Beach | 87.0°F | 88.7°F | 88.1°F |
| Rawai Beach | 87.0°F | 88.7°F | 88.1°F |
| Cape Panwa | 87.0°F | 88.8°F | 87.9°F |
| Phi Phi | 86.9°F | 88.8°F | 87.8°F |
| Krabi | 86.9°F | 88.5°F | 87.7°F |
| Similan | 86.8°F | 88.7°F | 87.9°F |
| Koh Lanta | 86.7°F | 88.5°F | 87.8°F |
| Samet | 86.7°F | 88.7°F | 85.8°F |
| Rayong | 86.7°F | 88.5°F | 85.9°F |
| Trat | 86.6°F | 88.6°F | 86.5°F |
| Hat Yai | 86.5°F | 87.7°F | 87.1°F |
| Narathiwat | 86.4°F | 87.6°F | 86.8°F |
| Chaweng Beach | 86.3°F | 87.5°F | 86.0°F |
| Choeng Mon Beach | 86.3°F | 87.5°F | 86.0°F |
| Lamai Beach | 86.2°F | 87.5°F | 86.0°F |
| Samui | 86.2°F | 87.5°F | 86.0°F |
| Tao | 86.2°F | 87.6°F | 85.7°F |
| Pattani | 86.2°F | 87.4°F | 86.7°F |
| Mae Nam Beach | 86.2°F | 87.5°F | 85.9°F |
| Bo Phut Beach | 86.2°F | 87.5°F | 85.9°F |
| Koh Lan | 86.2°F | 88.3°F | 85.5°F |
| Ko Phangan | 86.2°F | 87.5°F | 85.9°F |
| Phangan | 86.1°F | 87.5°F | 85.9°F |
| Taling Ngam Beach | 86.1°F | 87.4°F | 85.9°F |
| Jomtien | 85.9°F | 88.2°F | 85.6°F |
| Pattaya | 85.9°F | 88.2°F | 85.5°F |
| Chumphon | 85.5°F | 87.2°F | 85.3°F |
| Surat Thani | 85.2°F | 85.8°F | 85.7°F |
| Prachuap Khiri Khan | 84.9°F | 87.0°F | 85.0°F |
| Bangkok | 84.5°F | 87.0°F | 84.7°F |
| Hua Hin | 84.1°F | 87.0°F | 84.5°F |
| Cha-am | 84.1°F | 87.0°F | 84.5°F |
Please see following sea water temperature averages charts for the warmest Thailand resorts in December.
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 |  |
+88 |
| Chumphon | |
+82 |
| Hua Hin | |
+82 |
| Koh Chang |  |
+84 |
| Krabi | |
+82 |
| Narathiwat | |
+80 |
| Pattani |  |
+78 |
| Pattaya |  |
+84 |
| Phi Phi |  |
+88 |
| Phuket | |
+84 |
| Prachuap Khiri Khan | |
+82 |
| Rayong |  |
+82 |
| Samet | |
+84 |
| Samui | |
+88 |
| Surat Thani | |
+80 |
