Koh Rong Sea Temperature

Updated Sat 06:39 (Asia/Phnom_Penh)

Cambodia · Forecast updated Aug 8, 2026, 06:39 UTC

Current Sea Temperature

29.9°C

85.8°F

Very warm water

Versus this month's average

0.3°C above

The August average in our archive is 29.6°C (85.3°F).

Recent trend

Holding fairly steady

Seven-day average: 29.6°C, versus 29.4°C in the prior seven days.

What to wear

Very warm water

Swimwear is usually enough; a rash guard adds sun protection.

Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not describe sea conditions.

Sea Surface Temperature Over the Year

In the data collected for Koh Rong, monthly averages range from about 29.6°C (85.3°F) in August to 30.3°C (86.6°F) in June.

Over the past 30 days, the average sea temperature in Koh Rong has been 29.7°C.

Month	Min	Average	Max
June	29.8°C / 85.6°F	30.3°C / 86.6°F	31.1°C / 88.0°F
July	28.7°C / 83.7°F	29.7°C / 85.5°F	30.4°C / 86.7°F
August	28.7°C / 83.7°F	29.6°C / 85.3°F	29.9°C / 85.8°F

Profile calculated from 1646 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.

Gulf island with clear shallows, reef patches and bioluminescent plankton.

The current sea surface temperature in Koh Rong is 29.9°C. Over the last 30 days, the average has been 29.7°C.

The warmest monthly average in the Koh Rong archive is June, at around 30.3°C (86.6°F).

The coldest monthly average in the archive is August, at around 29.6°C (85.3°F).

At 29.9°C, the water is usually comfortable for swimming and snorkeling.

See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Koh Rong.