Measurements:
°C
°F
Tokyo
50°F
SW 9 mph
Feels like: 44°F
Precip: 0%
World Resorts Japan Tokyo Weather

Tokyo Sea Water Temperature

Current Sea Water Temperature:
+52.6°F
Maximum Sea Water Temperature in March: 64.8°F
Minimum Sea Water Temperature in March: 49.0°F
Average water temperature in March: 55.7°F

Sea Water Temperature for the Last 10 Days:

March 13 52.6°F March 08 55.0°F
March 12 52.6°F March 07 56.0°F
March 11 52.0°F March 06 53.0°F
March 10 53.4°F March 05 55.6°F
March 09 53.6°F March 04 58.0°F

When is the Warmest Sea for Tokyo?

According to our data for the last three years for Tokyo 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 Tokyo was 87.5°F. The maximum and minimum values were 86.0°F and 90.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Tokyo was 85.1°F. The maximum and minimum values were 79.2°F and 89.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Tokyo was 85.1°F. The maximum and minimum values were 79.6°F and 88.4°F respectively.

Best Time to Visit Tokyo
The most sunny months:
January 19 days
December 18 days
November 14 days
The most warm months:
August 95.3 °F
July 92.2 °F
September 87.1 °F
Warmest sea temperature:
August 85.3 °F
September 81.9 °F
July 81.3 °F
The most cold months:
January 48.1 °F
February 49.9 °F
December 53.5 °F
The most rainy months:
June 7 days
September 6 days
October 5 days
The most windy months:
April 10 mph
May 9 mph
March 9 mph

Tokyo on the Weather Map

Japan Resorts:
NAME
Atami +46
Fukuoka +48
Hakone +48
Hiroshima +46
Kamakura +48
Kobe +46
Kyoto +44
Nagasaki +50
Nagoya +54
Nara +44
Okinawa +64
Osaka +46
Sapporo +34
Tokyo +50
Yokohama +50
24 Hours Weather Forecast
Tokyo
Local time: 16:27
13 mar, friday
1800 50°F
SW
9 mph
2100 48°F
SW
12 mph
14 mar, saturday
0000 46°F
SW
13 mph
0300 44°F
S
11 mph
0600 42°F
S
12 mph
0900 46°F
S
13 mph
1200 54°F
SW
10 mph
1500 58°F
SW
7 mph