World Resorts Japan Okinawa Weather

Okinawa sea water temperature

Current sea water temperature:
+80.4°F
Minimum sea water temperature in June: 85.6°F
Maximum sea water temperature in June: 75.6°F
Average sea water temperature in June: 79.9°F

Sea water temperature for the last 10 days:

June 26 80.4°F June 21 79.5°F
June 25 80.8°F June 20 79.0°F
June 24 80.4°F June 19 78.6°F
June 23 81.0°F June 18 78.1°F
June 22 80.1°F June 17 77.7°F

When is the warmest sea in Okinawa?

Based on the data about daily sea water temperature for the last three years the warmest sea in Okinawa was noticed in August, September and July.

Monthly Sea Temperatures in Okinawa, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 85.4°F. The highest and lowest sea temperatures during the month were 86.2°F and 84.7°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 85.9°F. The highest and lowest sea temperatures during the month were 86.4°F and 85.1°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 84.3°F. The highest and lowest sea temperatures during the month were 85.6°F and 83.1°F.

Best time for vacation in Okinawa

Sunniest months:
August 9 days
July 8 days
September 7 days
Warmest months:
August 87.0 °F
July 86.7 °F
September 85.4 °F
Warmest sea temp:
August 84.5 °F
September 83.8 °F
July 83.6 °F
Coldest months:
January 64.4 °F
February 65.5 °F
December 68.0 °F
Rainiest months:
June 13 days
May 10 days
August 10 days
Windiest months:
December 15.4 mph
October 14.6 mph
January 14.4 mph

Okinawa on a weather map

Okinawa
+77°F
SE 11 mph
Feels like: +82°F
Precip.: 29%
Places in Japan:
Name
°F
+68°F
+72°F
+72°F
+68°F
+70°F
+70°F
+70°F
+68°F
+77°F
+70°F
+61°F
+72°F
+68°F
+70°F
+66°F
24 Hours Forecast
Okinawa
Local time: 02:55
June 27, saturday
0300
77°F
SE
11 mph
0600
77°F
SE
9 mph
0900
79°F
SE
7 mph
1200
77°F
SE
5 mph
1500
77°F
E
3 mph
1800
75°F
NW
2 mph
2100
75°F
E
1 mph
June 28, sunday
0000
75°F
E
1 mph
Units of measurement: °C / °F