Derawan Sea Temperature
Updated Wed 11:44 (Asia/Makassar)
Indonesia · Forecast updated Aug 12, 2026, 11:44 UTC
Current Sea Temperature
29.3°C
84.7°F
Very warm water
Versus this month's average
0.4°C below
The August average in our archive is 29.7°C (85.5°F).
Recent trend
Holding fairly steady
Seven-day average: 29.7°C, versus 29.9°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 Derawan, monthly averages range from about 29.6°C (85.2°F) in July to 30.1°C (86.2°F) in June.
Over the past 30 days, the average sea temperature in Derawan has been 29.6°C.
Monthly Water Temperature Averages
Northern Hemisphere. Summer is generally June–August; winter is December–February.
| Month | Min | Average | Max |
|---|---|---|---|
| June | 29.7°C / 85.5°F | 30.1°C / 86.2°F | 30.6°C / 87.1°F |
| July | 29.1°C / 84.4°F | 29.6°C / 85.2°F | 30.2°C / 86.4°F |
| August | 28.8°C / 83.8°F | 29.7°C / 85.5°F | 30.4°C / 86.7°F |
Profile calculated from 1748 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Derawan
Borneo archipelago with turtles, mantas and a stingless-jellyfish lake.
- Area
- East Kalimantan
Derawan Water Temperature: Common Questions
What is the sea temperature in Derawan today?
The current sea surface temperature in Derawan is 29.3°C. Over the last 30 days, the average has been 29.6°C.
When is the water warmest in Derawan?
The warmest monthly average in the Derawan archive is June, at around 30.1°C (86.2°F).
When is the water coldest in Derawan?
The coldest monthly average in the archive is July, at around 29.6°C (85.2°F).
Can you swim in Derawan today?
At 29.3°C, the water is usually comfortable for swimming and snorkeling.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Derawan.
View Snorkel Forecast →