The Cambodia resorts with the warmest sea water temperature in August are Koh Rong, Koh Dek Koule and Sihanoukville.
Below you can see a list of all popular Cambodia resorts and information about sea water temperature in August for the last two years.
| Resort Name | August 2025 | August 2024 | August 2023 |
|---|---|---|---|
| Koh Rong | 89.1°F | 89.4°F | 88.7°F |
| Koh Dek Koule | 89.0°F | 89.1°F | 88.8°F |
| Sihanoukville | 88.9°F | 89.1°F | 88.8°F |
| Koh Kong | 88.7°F | 89.1°F | 88.5°F |
Please see following sea water temperature averages charts for the warmest Cambodia resorts in August.
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 | ![]() |
+90 |
| Koh Dek Koule | ![]() |
+84 |
| Koh Kong | ![]() |
+92 |
| Koh Rong | ![]() |
+84 |
| Phnom Penh | ![]() |
+88 |
| Siem Reap | ![]() |
+90 |
| Sihanoukville | ![]() |
+84 |



























