What is the current water temperature in Tokyo?

Q: What is the current water temperature in Tokyo?

As of now, in Tokyo, the water temperature is 18.8°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

Japan > Tokyo

Water temperature in Tokyo

Detailed information about the current water temperature in Tokyo. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

65.8

°F

May 9, 02:56

Trend:

stable

Yesterday:

65.3°F

Tomorrow:

65.7°F

Sunrise:

04:42

Sunset:

18:34

Day Length:

13 h. 52 min.

Tokyo in May

Minimum:

50.8°F

Average:

54.6°F

Maximum:

59.4°F

Sea water temperature in Tokyo today

As of now, in Tokyo, the water temperature is 65.8°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 0.4°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 69.8°F on 2023, while the historical minimum was 63.4°F on 2020.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 65.7°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Tokyo

Date	Current Year actual* / forecast**	last year	10 years average
Apr 25	62.1°F	63.3°F	61.6°F
Apr 26	62.1°F	64.0°F	62.1°F
Apr 27	62.1°F	64.0°F	62.2°F
Apr 28	63.8°F	63.9°F	62.3°F
Apr 29	62.2°F	63.9°F	62.4°F
Apr 30	62.4°F	64.0°F	62.6°F
May 1	63.1°F	67.9°F	63.2°F
May 2	63.3°F	66.7°F	63.5°F
May 3	64.0°F	66.1°F	64.1°F
May 4	65.6°F	66.4°F	64.7°F
May 5	64.8°F	68.8°F	64.8°F
May 6	64.7°F	66.3°F	65.0°F
May 7	65.1°F	66.3°F	65.2°F
May 8	65.3°F	66.2°F	64.9°F
May 9	65.8°F	66.3°F	65.4°F
May 10	65.7°F	66.2°F	65.3°F
May 11	65.0°F	65.6°F	64.6°F
May 12	65.9°F	66.4°F	65.4°F
May 13	65.6°F	66.2°F	65.2°F
May 14	65.6°F	66.1°F	65.2°F
May 15	66.1°F	67.7°F	65.6°F
May 16	66.1°F	67.8°F	65.7°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Tokyo by month

In Tokyo, the months July through September offer comfortable swimming conditions, which amounts to 104 swimming days.

The warmest water in Tokyo was recorded on July 30, 2024, reaching a 88.2°F. While the coldest temperature occurred on February 15, 2022, dipping to 47.3°F. The average readings by season are 55.0°F in Winter, 60.2°F in Spring, 77.4°F in Summer, and 71.6°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kawasaki	65.5°F	12mi
Matsudo	65.9°F	13mi
Honchō	65.9°F	17mi
Yokohama	65.0°F	18mi
Chiba	65.4°F	25mi
Ichihara	65.4°F	25mi
Kisarazu	64.5°F	25mi
Kimitsu	64.5°F	25mi
Fujisawa	64.5°F	26mi
Futtsu	64.0°F	27mi

* current water temperature in this city

** straight line distance from Tokyo