The Cambodia resorts with the warmest sea water temperature in January are Koh Kong, Koh Rong and Sihanoukville.
Below you can see a list of all popular Cambodia resorts and information about sea water temperature in January for the last two years.
| Resort Name | January 2026 | January 2025 | January 2024 |
|---|---|---|---|
| Koh Kong | 85.8°F | 85.2°F | 88.1°F |
| Koh Rong | 85.8°F | 86.1°F | 88.5°F |
| Sihanoukville | 85.6°F | 85.3°F | 88.1°F |
| Koh Dek Koule | 85.6°F | 85.4°F | 88.2°F |
Please see following sea water temperature averages charts for the warmest Cambodia resorts in January.
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.
Cambodia Resorts:
NAME
F°
| Battambang | ![]() |
+96 |
| Koh Dek Koule | ![]() |
+82 |
| Koh Kong | ![]() |
+96 |
| Koh Rong | ![]() |
+82 |
| Phnom Penh | ![]() |
+92 |
| Siem Reap | ![]() |
+92 |
| Sihanoukville | ![]() |
+82 |



























