Okinawa - Blue Cave Sea Temperature
Japan · Forecast updated Jul 15, 2026, 05:14 UTC
Current Sea Temperature
27.9°C
82.2°F
Warm water
Versus this month's average
Close to average
The July average in our archive is 28.0°C (82.4°F).
Recent trend
Cooling by 0.7°C
Seven-day average: 27.7°C, versus 28.4°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 mean the sea is safe.
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 28.0°C (82.4°F) in July.
Over the past 30 days, the average sea temperature in Okinawa - Blue Cave has been 27.4°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 | 28.0°C / 82.4°F | 29.5°C / 85.1°F |
Profile calculated from 1070 hourly forecast records across 2 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 27.4°C.
When is the water warmest in Okinawa - Blue Cave?
The warmest monthly average in the Okinawa - Blue Cave archive is July, at around 28.0°C (82.4°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?
Yes — at 27.9°C the water is warm enough for comfortable 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 →