Search for cities, countries, lakes and rivers

Sapporo

Water Temperature in the Sea of Japan in Sapporo, Japan: Current, Historical Data and Forecast

On this page, you will find comprehensive information about the sea temperature in Sapporo in Japan, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Water Temperature in Sapporo

4.1°C

TODAY

4.2°C

YESTERDAY

4.6°C

A WEEK AGO

Analysis, Historical Data, and Forecast of Water Temperature

Today sea water temperature in the Sea of Japan in Sapporo is 4.1°C. Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart for Sea of Japan in Sapporo Over the Last 30 Days

The water temperature in Sapporo today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.

According to our forecast, the sea temperature in Sapporo will remain nearly unchanged in the coming days, its value will be 4.4°C.

Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.

Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts across Japan to enhance accuracy.

Water temperature data for Sapporo and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
Mar 20	4.6°C	5.0°C
Mar 21	4.5°C	3.8°C
Mar 22	4.2°C	3.8°C
Mar 23	4.2°C	4.8°C
Mar 24	4.8°C	4.3°C
Mar 25	4.3°C	4.5°C
Mar 26	4.2°C	4.5°C
Mar 27	4.1°C	4.5°C
Mar 28		3.5°C	4.0°C
Mar 29		4.5°C	4.1°C
Mar 30		4.5°C	4.1°C
Mar 31		4.8°C	4.2°C
Apr 1		4.3°C	4.2°C
Apr 2		4.5°C	4.2°C
Apr 3		4.8°C	4.3°C
Apr 4		4.8°C	4.4°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Sea Temperature in Sapporo Throughout the Year

Throughout the year, the sea temperature in Sapporo exceeds 77°F (25°C) for 0 days, exceeds 72°F (22°C) for 4 days, and exceeds 64°F (18°C) for 91 days.

Below is the annual chart of sea temperature changes in the Sea of Japan in Sapporo.

January

Minimum	Average	Maximum
0°C	4.5°C	9°C

February

Minimum	Average	Maximum
0°C	3.5°C	7°C

March

Minimum	Average	Maximum
1°C	3.5°C	6°C

April

Minimum	Average	Maximum
3°C	6°C	9°C

May

Minimum	Average	Maximum
4°C	9°C	14°C

June

Minimum	Average	Maximum
10°C	14°C	18°C

July

Minimum	Average	Maximum
14°C	19°C	24°C

August

Minimum	Average	Maximum
19°C	22°C	25°C

September

Minimum	Average	Maximum
16°C	20°C	24°C

October

Minimum	Average	Maximum
13°C	17.5°C	22°C

November

Minimum	Average	Maximum
8°C	12°C	16°C

December

Minimum	Average	Maximum
3°C	7.5°C	12°C

Monthly Water Temperature Histogram for Sea of Japan in Sapporo

You can explore detailed data on how the water temperature in Sapporo varies each month:

Sapporo Weather

MARCH 28

-0°C / 4°C

light snow

humidity: 62% | wind: 4 km/h

MARCH 29

-2°C / 2°C

snow

humidity: 58% | wind: 6 km/h

MARCH 30

-1°C / 3°C

light snow

humidity: 58% | wind: 4 km/h

MARCH 31

-0°C / -0°C

clear sky

humidity: 69% | wind: 4 km/h

Sea Temperature in the Sea of Japan in Sapporo: General Trends and Swimming Opportunities

Original name

札幌市

The Local Time

15:47

Time Zone

UTC+9

Sunrise

05:26

Sunset

17:53

Length of the day

12 h 27 m

Hokkaido, located in the northernmost part of Japan, experiences a humid continental climate along its coastal areas, featuring cold, snowy winters and mild to warm summers. It is also noteworthy for its cooler average temperatures compared to the rest of Japan and its less humid environment.

Sapporo is located in Asia in the Northern Hemisphere at a latitude of 43 degrees, along the shores of the Sea of Japan. Sapporo lies within the Hokkaido in Japan.

The average annual daytime air temperature in Sapporo is 12°C (54°F), with the average nighttime temperature being 5°C (41°F). The highest average daily temperature occurs in August, reaching 25°C (78°F), while the lowest is in January at -1°C (31°F). As for nighttime temperatures, the minimum average temperature of -7°C (19°F) is recorded in January, and the maximum is in August, reaching 19°C (66°F).

According to historical data, Sapporo experiences 181 rainy days per year, which accounts for 50 percent of all days in the year. On average, there are 15 rainy days each month. The wettest month is January, with 23 rainy days and 103 mm (4.1 inches) of precipitation, while the driest month is June, which typically has 10 rainy days and only 66 mm (2.6 inches) of precipitation.

The average annual water temperature in Sea of Japan in Sapporo is 12°C (54°F). In January, the water reaches its lowest point of the year at 0°C (32°F), while in August, it peaks at 25°C (77°F). In Sapporo, the water temperature in the Sea of Japan never consistently reaches a comfortable level for swimming in any month.

Geographical Location of Sapporo

Nearby Cities

Tomakomai

Frequently Asked Questions About Sapporo and its Water Temperatures

What is the current sea temperature in Sapporo?

The water temperature today in the Sea of Japan in Sapporo is 39°F (4.1°C).

In which months is the water temperature in Sapporo comfortable for swimming?

It cannot be guaranteed that the water temperature in Sapporo will be comfortable for swimming in any month of the year.

What is the water temperature in Sapporo during the winter?

The water temperature in the Sea of Japan in Sapporo during the winter ranges from 0°C to 12°C (32°F to 54°F).

What is the water temperature in Sapporo during the spring?

The water temperature in the Sea of Japan in Sapporo during the spring ranges from 1°C to 14°C (34°F to 57°F).

What is the water temperature in Sapporo during the summer?

The water temperature in the Sea of Japan in Sapporo during the summer ranges from 10°C to 25°C (50°F to 77°F).

What is the water temperature in Sapporo during the fall?

The water temperature in the Sea of Japan in Sapporo during the fall ranges from 8°C to 24°C (46°F to 75°F).

Is it possible to swim in the sea in Sapporo at any time of the year?

The Sea of Japan in Sapporo is quite cool, and swimming is only possible in July, August, September, and October when the water temperature reaches 21°C (70°F).

Is Sapporo a popular tourist destination for beach vacations?

Sapporo has a moderate level of popularity for beach vacations; while it does receive some visitors, it is not among the top seaside destinations, as other locations may offer more favorable conditions.

What sea temperatures can I expect in Sapporo in the next month?

In April, the water temperature in the Sea of Japan in Sapporo will range between 37°F (3°C) and 48°F (9°C)