Measurements:
°C
°F
Yokohama
78°F
NE 23 mph
Feels like: 82°F
Precip: 17%
World Resorts Japan Yokohama Weather

Yokohama Sea Water Temperature

Current Sea Water Temperature:
+74.2°F
Maximum Sea Water Temperature in October: 83.0°F
Minimum Sea Water Temperature in October: 67.0°F
Average water temperature in October: 74.0°F

Sea Water Temperature for the Last 10 Days:

October 18 74.2°F October 13 75.2°F
October 17 75.0°F October 12 75.2°F
October 16 74.8°F October 11 74.4°F
October 15 74.8°F October 10 74.4°F
October 14 74.2°F October 09 75.8°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Yokohama was 85.1°F. The maximum and minimum values were 81.8°F and 88.2°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Yokohama was 80.9°F. The maximum and minimum values were 76.6°F and 84.6°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Yokohama was 81.4°F. The maximum and minimum values were 76.2°F and 87.2°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 91.4 °F
July 88.0 °F
September 84.9 °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
F°
Atami +76
Fukuoka +86
Hakone +78
Hiroshima +74
Kamakura +80
Kobe +78
Kyoto +76
Nagasaki +78
Nagoya +82
Nara +78
Okinawa +86
Osaka +80
Sapporo +60
Tokyo +84
Yokohama +78
24 Hours Weather Forecast
Yokohama
Local time: 15:44
19 oct, monday
1800 78°F
NE
20 mph
2100 78°F
NE
17 mph
20 oct, tuesday
0000 76°F
NE
11 mph
0300 76°F
NE
11 mph
0600 76°F
NE
11 mph
0900 78°F
NE
20 mph
1200 80°F
NE
15 mph
1500 78°F
S
6 mph