World Resorts Japan Okinawa Weather

Okinawa sea water temperature

Current sea water temperature:
+82.4°F
Minimum sea water temperature in July: 87.3°F
Maximum sea water temperature in July: 79.7°F
Average sea water temperature in July: 83.6°F

Sea water temperature for the last 10 days:

July 16 82.4°F July 11 82.4°F
July 15 81.7°F July 10 83.7°F
July 14 81.0°F July 9 83.5°F
July 13 81.1°F July 8 84.0°F
July 12 80.8°F July 7 83.5°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:
2026
2025
2024

The average sea water temperature in July of 2026 was 82.1°F. The highest and lowest sea temperatures during the month were 84.0°F and 80.1°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
+84°F
NE 10 mph
Feels like: +93°F
Precip.: 8%
Places in Japan:
Name
°F
+84°F
+82°F
+81°F
+95°F
+90°F
+82°F
+93°F
+73°F
+84°F
+95°F
+84°F
+88°F
+86°F
+82°F
+82°F
24 Hours Forecast
Okinawa
Local time: 11:01
July 17, friday
1200
84°F
NE
10 mph
1500
84°F
NE
11 mph
1800
82°F
NE
9 mph
2100
81°F
NE
5 mph
July 18, saturday
0000
81°F
NE
6 mph
0300
81°F
E
6 mph
0600
79°F
NE
6 mph
0900
82°F
NE
7 mph
Units of measurement: °C / °F