World Resorts Japan Tokyo Weather

Tokyo sea water temperature

Current sea water temperature:
+83.5°F
Minimum sea water temperature in August: 86.4°F
Maximum sea water temperature in August: 76.8°F
Average sea water temperature in August: 81.7°F

Sea water temperature for the last 10 days:

August 5 83.5°F July 31 82.8°F
August 4 85.8°F July 30 82.8°F
August 3 83.3°F July 29 81.1°F
August 2 84.7°F July 28 81.7°F
August 1 82.9°F July 27 82.6°F

When is the warmest sea in Tokyo?

Based on the data about daily sea water temperature for the last three years the warmest sea in Tokyo was noticed in August, September and July.

Monthly Sea Temperatures in Tokyo, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 83.7°F. The highest and lowest sea temperatures during the month were 86.0°F and 82.4°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 81.6°F. The highest and lowest sea temperatures during the month were 85.8°F and 76.3°F.

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 78.8°F. The highest and lowest sea temperatures during the month were 84.4°F and 74.3°F.

Best time for vacation in Tokyo

Sunniest months:
January 19 days
December 18 days
November 14 days
Warmest months:
August 90.8 °F
July 87.9 °F
September 83.4 °F
Warmest sea temp:
August 81.8 °F
September 78.7 °F
July 78.2 °F
Coldest months:
January 48.3 °F
February 50.0 °F
December 53.1 °F
Rainiest months:
June 7 days
September 6 days
October 5 days
Windiest months:
April 10.0 mph
May 9.3 mph
March 9.3 mph

Tokyo on a weather map

Tokyo
+90°F
W 3 mph
Feels like: +95°F
Precip.: 11%
Places in Japan:
Name
°F
+84°F
+84°F
+84°F
+93°F
+91°F
+91°F
+95°F
+73°F
+86°F
+95°F
+84°F
+90°F
+95°F
+86°F
+90°F
24 Hours Forecast
Tokyo
Local time: 11:52
August 06, thursday
1200
90°F
W
3 mph
1500
91°F
NW
10 mph
1800
88°F
N
12 mph
2100
84°F
N
11 mph
August 07, friday
0000
82°F
N
7 mph
0300
81°F
N
6 mph
0600
81°F
N
6 mph
0900
86°F
N
7 mph
Units of measurement: °C / °F