Current sea water temperature:
+57.4°F
| Minimum sea water temperature in December: | 64.8°F |
| Maximum sea water temperature in December: | 52.2°F |
| Average sea water temperature in December: | 59.7°F |
| more information | |
14 days
forecast
forecast
| Osaka |
monthly
weather
weather
| Osaka |
Sea water temperature for the last 10 days:
| December 20 | 57.4°F | December 15 | 59.7°F |
| December 19 | 58.1°F | December 14 | 59.7°F |
| December 18 | 57.6°F | December 13 | 59.5°F |
| December 17 | 58.1°F | December 12 | 59.4°F |
| December 16 | 59.7°F | December 11 | 59.5°F |
Monthly sea water temperature, °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.
current
weather
weather
| Osaka |
weather in
December
December
| Osaka |
Best time for vacation in Osaka
Osaka on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Osaka
Local time: 09:30
December 21, sunday
1200
59°F
SE
2 mph
2 mph
1500
57°F
S
11 mph
11 mph
1800
54°F
S
11 mph
11 mph
2100
54°F
S
7 mph
7 mph
December 22, monday
0000
52°F
S
9 mph
9 mph
0300
48°F
S
9 mph
9 mph
0600
48°F
S
9 mph
9 mph
0900
48°F
S
14 mph
14 mph
