Measurements:
°C
°F
Yokohama
64°F
N 30 mph
Feels like: 64°F
Precip: 100%
World Resorts Japan Yokohama Weather

Yokohama Sea Water Temperature

Current Sea Water Temperature:
+59.8°F
Maximum Sea Water Temperature in April: 67.6°F
Minimum Sea Water Temperature in April: 54.8°F
Average water temperature in April: 60.8°F

Sea Water Temperature for the Last 10 Days:

April 04 59.8°F March 30 58.6°F
April 03 61.8°F March 29 57.8°F
April 02 60.0°F March 28 59.0°F
April 01 60.6°F March 27 58.4°F
March 31 59.8°F March 26 59.0°F

When is the Warmest Sea for Yokohama?

According to our data for the last three years for Yokohama the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Yokohama was 86.4°F. The maximum and minimum values were 84.8°F and 89.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Yokohama was 84.3°F. The maximum and minimum values were 78.6°F and 88.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Yokohama was 84.3°F. The maximum and minimum values were 79.6°F and 88.0°F respectively.

Best Time to Visit Yokohama
The most sunny months:
January 16 days
December 16 days
July 14 days
The most warm months:
August 91.9 °F
July 88.2 °F
September 85.4 °F
Warmest sea temperature:
August 84.7 °F
September 81.6 °F
July 80.6 °F
The most cold months:
January 48.6 °F
February 49.7 °F
December 54.0 °F
The most rainy months:
September 7 days
June 7 days
October 6 days
The most windy months:
April 12 mph
March 12 mph
February 11 mph

Yokohama on the Weather Map

Japan Resorts:
NAME
Atami +62
Fukuoka +54
Hakone +60
Hiroshima +52
Kamakura +64
Kobe +60
Kyoto +60
Nagasaki +58
Nagoya +62
Nara +60
Okinawa +66
Osaka +62
Sapporo +44
Tokyo +62
Yokohama +64
24 Hours Weather Forecast
Yokohama
Local time: 00:31
05 apr, sunday
0300 64°F
NE
15 mph
0600 62°F
E
2 mph
0900 64°F
SW
4 mph
1200 66°F
NW
2 mph
1500 66°F
N
6 mph
1800 66°F
N
14 mph
2100 64°F
NE
19 mph
06 apr, monday
0000 64°F
NE
13 mph