Measurements:
°C
°F
Okinawa
70°F
N 12 mph
Feels like: 70°F
Precip: 100%
World Resorts Japan Okinawa Weather

Okinawa Sea Water Temperature

Current Sea Water Temperature:
+72.2°F
Maximum Sea Water Temperature in February: 75.8°F
Minimum Sea Water Temperature in February: 69.4°F
Average water temperature in February: 72.7°F

Sea Water Temperature for the Last 10 Days:

February 20 72.2°F February 15 72.2°F
February 19 72.2°F February 14 72.0°F
February 18 72.0°F February 13 71.8°F
February 17 72.4°F February 12 71.8°F
February 16 72.6°F February 11 72.0°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: 2025 2024 2023

The average sea surface temperature in August 2025 for Okinawa was 89.3°F. The maximum and minimum values were 88.6°F and 90.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Okinawa was 89.9°F. The maximum and minimum values were 89.0°F and 90.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Okinawa was 88.1°F. The maximum and minimum values were 86.8°F and 89.6°F respectively.

Best Time to Visit Okinawa
The most sunny months:
August 9 days
July 8 days
September 7 days
The most warm months:
August 91.1 °F
July 90.8 °F
September 89.3 °F
Warmest sea temperature:
August 88.4 °F
September 87.6 °F
July 87.4 °F
The most cold months:
January 66.0 °F
February 67.4 °F
December 70.0 °F
The most rainy months:
June 13 days
May 10 days
August 10 days
The most windy months:
December 15 mph
October 14 mph
January 14 mph

Okinawa on the Weather Map

Japan Resorts:
NAME
Atami +54
Fukuoka +58
Hakone +54
Hiroshima +54
Kamakura +52
Kobe +52
Kyoto +54
Nagasaki +58
Nagoya +54
Nara +56
Okinawa +70
Osaka +54
Sapporo +36
Tokyo +54
Yokohama +52
24 Hours Weather Forecast
Okinawa
Local time: 11:46
21 feb, saturday
1200 70°F
N
12 mph
1500 70°F
N
11 mph
1800 68°F
N
11 mph
2100 66°F
N
11 mph
22 feb, sunday
0000 66°F
NW
12 mph
0300 66°F
NW
12 mph
0600 68°F
NW
11 mph
0900 68°F
N
11 mph