Okinawa - Blue Cave Sea Temperature
Updated Sat 10:41 (Asia/Tokyo)
Japan · Forecast updated Aug 8, 2026, 10:41 UTC
Current Sea Temperature
27.9°C
82.2°F
Warm water
Versus this month's average
1.0°C below
The August average in our archive is 28.9°C (83.9°F).
Recent trend
Cooling by 0.8°C
Seven-day average: 29.2°C, versus 30.0°C in the prior seven days.
What to wear
Warm water
Most people are comfortable in swimwear or a light rash guard.
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 Okinawa - Blue Cave, monthly averages range from about 26.2°C (79.1°F) in June to 28.9°C (83.9°F) in August.
Over the past 30 days, the average sea temperature in Okinawa - Blue Cave has been 29.0°C.
Monthly Water Temperature Averages
| Month | Min | Average | Max |
|---|---|---|---|
| June | 25.0°C / 77.0°F | 26.2°C / 79.1°F | 28.2°C / 82.8°F |
| July | 26.9°C / 80.4°F | 28.7°C / 83.7°F | 30.7°C / 87.3°F |
| August | 27.1°C / 80.8°F | 28.9°C / 83.9°F | 30.9°C / 87.6°F |
Profile calculated from 1651 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Okinawa - Blue Cave
Cape Maeda sea cave glowing blue, with reef fish in the clear entrance.
- Area
- Okinawa
Okinawa - Blue Cave Water Temperature: Common Questions
What is the sea temperature in Okinawa - Blue Cave today?
The current sea surface temperature in Okinawa - Blue Cave is 27.9°C. Over the last 30 days, the average has been 29.0°C.
When is the water warmest in Okinawa - Blue Cave?
The warmest monthly average in the Okinawa - Blue Cave archive is August, at around 28.9°C (83.9°F).
When is the water coldest in Okinawa - Blue Cave?
The coldest monthly average in the archive is June, at around 26.2°C (79.1°F).
Can you swim in Okinawa - Blue Cave today?
At 27.9°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 Okinawa - Blue Cave.
View Snorkel Forecast →