World Resorts Japan Okinawa Weather

Okinawa sea water temperature

Current sea water temperature:
+74.3°F
Minimum sea water temperature in December: 78.6°F
Maximum sea water temperature in December: 70.9°F
Average sea water temperature in December: 74.6°F

Sea water temperature for the last 10 days:

December 23 74.3°F December 18 74.7°F
December 22 74.3°F December 17 74.8°F
December 21 74.5°F December 16 74.8°F
December 20 74.5°F December 15 75.2°F
December 19 74.7°F December 14 75.6°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 64.6 °F
February 65.6 °F
December 68.0 °F
Rainiest months:
June 13 days
May 10 days
August 10 days
Windiest months:
December 15.7 mph
January 14.6 mph
October 14.6 mph

Okinawa on a weather map

Okinawa
+70°F
S 9 mph
Feels like: +70°F
Precip.: 100%
Places in Japan:
Name
°F
+48°F
+48°F
+50°F
+54°F
+57°F
+54°F
+52°F
+41°F
+70°F
+52°F
+39°F
+45°F
+54°F
+50°F
+50°F
24 Hours Forecast
Okinawa
Local time: 11:45
December 24, wednesday
1200
70°F
S
9 mph
1500
70°F
S
11 mph
1800
68°F
S
12 mph
2100
66°F
S
11 mph
December 25, thursday
0000
66°F
S
10 mph
0300
66°F
S
11 mph
0600
66°F
S
15 mph
0900
66°F
S
17 mph
Units of measurement: °C / °F