Measurements:
°C
°F
Okinawa
80°F
W 7 mph
Feels like: 86°F
Precip: 13%
World Resorts Japan Okinawa Weather

Okinawa Sea Water Temperature

Current Sea Water Temperature:
+85.8°F
Maximum Sea Water Temperature in October: 90.8°F
Minimum Sea Water Temperature in October: 79.8°F
Average water temperature in October: 84.6°F

Sea Water Temperature for the Last 10 Days:

October 19 85.8°F October 14 85.6°F
October 18 85.6°F October 13 85.8°F
October 17 86.0°F October 12 86.2°F
October 16 85.6°F October 11 86.8°F
October 15 85.8°F October 10 86.2°F

When is the Warmest Sea for Okinawa?

According to our data for the last three years for Okinawa the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Okinawa was 87.9°F. The maximum and minimum values were 85.8°F and 90.4°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Okinawa was 87.3°F. The maximum and minimum values were 86.2°F and 88.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Okinawa was 87.0°F. The maximum and minimum values were 83.4°F and 90.2°F respectively.

Best Time to Visit Okinawa
The most sunny months:
July 9 days
August 8 days
March 6 days
The most warm months:
August 90.8 °F
July 90.6 °F
September 89.1 °F
Warmest sea temperature:
August 88.3 °F
September 87.6 °F
July 87.4 °F
The most cold months:
January 66.0 °F
February 67.2 °F
December 70.0 °F
The most rainy months:
June 13 days
May 10 days
August 9 days
The most windy months:
December 15 mph
October 14 mph
January 14 mph

Okinawa on the Weather Map

Japan Resorts:
NAME
F°
Atami +66
Fukuoka +72
Hakone +76
Hiroshima +68
Kamakura +78
Kobe +74
Kyoto +74
Nagasaki +76
Nagoya +76
Nara +76
Okinawa +80
Osaka +78
Sapporo +50
Tokyo +78
Yokohama +78
24 Hours Weather Forecast
Okinawa
Local time: 21:26
20 oct, tuesday
0000 80°F
W
7 mph
0300 80°F
W
7 mph
0600 80°F
W
8 mph
0900 84°F
W
9 mph
1200 86°F
W
9 mph
1500 84°F
W
9 mph
1800 80°F
SW
9 mph
2100 80°F
SW
9 mph