World Resorts Japan Osaka Weather

Osaka sea water temperature

Current sea water temperature:
+68.5°F
Minimum sea water temperature in May: 72.9°F
Maximum sea water temperature in May: 59.4°F
Average sea water temperature in May: 64.4°F

Sea water temperature for the last 10 days:

May 17 68.5°F May 12 64.2°F
May 16 66.7°F May 11 64.0°F
May 15 67.5°F May 10 63.0°F
May 14 65.8°F May 9 62.6°F
May 13 64.0°F May 8 64.0°F

When is the warmest sea in Osaka?

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

Monthly Sea Temperatures in Osaka, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 85.5°F. The highest and lowest sea temperatures during the month were 86.9°F and 83.1°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 82.5°F. The highest and lowest sea temperatures during the month were 87.1°F and 75.6°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 84.0°F. The highest and lowest sea temperatures during the month were 86.2°F and 79.5°F.

Best time for vacation in Osaka

Sunniest months:
May 16 days
August 16 days
October 15 days
Warmest months:
August 91.8 °F
July 88.5 °F
September 84.6 °F
Warmest sea temp:
August 82.6 °F
September 79.5 °F
July 79.3 °F
Coldest months:
January 46.6 °F
February 48.7 °F
December 50.9 °F
Rainiest months:
June 7 days
July 7 days
September 5 days
Windiest months:
January 7.4 mph
December 7.4 mph
February 7.3 mph

Osaka on a weather map

Osaka
+81°F
SE 6 mph
Feels like: +77°F
Precip.: 0%
Places in Japan:
Name
°F
+68°F
+72°F
+70°F
+73°F
+75°F
+72°F
+81°F
+77°F
+72°F
+81°F
+54°F
+79°F
+75°F
+68°F
+68°F
24 Hours Forecast
Osaka
Local time: 18:52
May 17, sunday
2100
72°F
S
3 mph
May 18, monday
0000
68°F
SW
3 mph
0300
66°F
SW
3 mph
0600
66°F
SW
3 mph
0900
77°F
E
0 mph
1200
82°F
NE
9 mph
1500
81°F
NE
11 mph
1800
75°F
E
10 mph
Units of measurement: °C / °F