21.09
mon
mon
Day
75°F
S 16 mph
Precip.
86%
86%
Night
75°F
S 42 mph
Precip.
86%
86%
22.09
tue
tue
Day
79°F
W 6 mph
Precip.
16%
16%
Night
75°F
SW 11 mph
Precip.
30%
30%
23.09
wed
wed
Day
73°F
SW 15 mph
Precip.
19%
19%
Night
73°F
SW 6 mph
Precip.
16%
16%
24.09
thu
thu
Day
73°F
W 7 mph
Precip.
18%
18%
Night
73°F
SW 6 mph
Precip.
22%
22%
25.09
fri
fri
Day
73°F
SE 3 mph
Precip.
38%
38%
Night
75°F
NE 9 mph
Precip.
23%
23%
26.09
sat
sat
Day
79°F
S 16 mph
Precip.
14%
14%
Night
70°F
SW 13 mph
Precip.
34%
34%
27.09
sun
sun
Day
73°F
SW 14 mph
Precip.
15%
15%
Night
70°F
W 8 mph
Precip.
17%
17%
sea water
temperature
temperature
| Yokohama |
monthly
weather
weather
| Yokohama |
current
weather
weather
| Yokohama |
14 days
forecast
forecast
| Yokohama |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 79.1°F. The highest and lowest sea temperatures during the month were 81.1°F and 77.0°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 72.9°F. The highest and lowest sea temperatures during the month were 75.6°F and 69.4°F.
Air temperature in Yokohama, °F
Precipitation total in Yokohama, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Yokohama
Yokohama on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Yokohama
Local time: 03:14
September 21, monday
0600
73°F
SW
17 mph
17 mph
0900
75°F
S
13 mph
13 mph
1200
75°F
S
16 mph
16 mph
1500
77°F
W
20 mph
20 mph
1800
79°F
W
20 mph
20 mph
2100
77°F
SW
27 mph
27 mph
September 22, tuesday
0000
75°F
S
42 mph
42 mph
0300
77°F
SE
28 mph
28 mph
