Current sea water temperature:
+57.4°F
| Minimum sea water temperature in December: | 64.4°F |
| Maximum sea water temperature in December: | 55.0°F |
| Average sea water temperature in December: | 60.2°F |
| more information | |
14 days
forecast
forecast
| Yokohama |
monthly
weather
weather
| Yokohama |
Sea water temperature for the last 10 days:
| December 21 | 57.4°F | December 16 | 59.5°F |
| December 20 | 56.8°F | December 15 | 58.6°F |
| December 19 | 57.4°F | December 14 | 59.9°F |
| December 18 | 59.4°F | December 13 | 59.9°F |
| December 17 | 58.1°F | December 12 | 60.4°F |
Monthly sea water temperature, °F
When is the warmest sea in Yokohama?
Based on the data about daily sea water temperature for the last three years the warmest sea in Yokohama was noticed in August, September and July.
Monthly Sea Temperatures in Yokohama, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 82.8°F. The highest and lowest sea temperatures during the month were 85.1°F and 81.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 80.9°F. The highest and lowest sea temperatures during the month were 84.9°F and 75.7°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 80.8°F. The highest and lowest sea temperatures during the month were 84.2°F and 76.6°F.
current
weather
weather
| Yokohama |
weather in
December
December
| Yokohama |
Best time for vacation in Yokohama
Yokohama on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Yokohama
Local time: 19:21
December 21, sunday
2100
59°F
S
17 mph
17 mph
December 22, monday
0000
55°F
S
18 mph
18 mph
0300
54°F
S
23 mph
23 mph
0600
52°F
S
24 mph
24 mph
0900
50°F
S
21 mph
21 mph
1200
50°F
S
17 mph
17 mph
1500
52°F
SW
12 mph
12 mph
1800
52°F
W
11 mph
11 mph
