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Tomakomai

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

On this page, you will find comprehensive information about the sea temperature in Tomakomai 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 Tomakomai

5.0°C

TODAY

5.0°C

YESTERDAY

4.8°C

A WEEK AGO

Analysis, Historical Data, and Forecast of Water Temperature

Today sea water temperature in the Sea of Japan in Tomakomai is 5°C. This water temperature is still quite low, and swimming in such conditions may only be comfortable for hardened individuals. It is recommended to limit the time spent in the water to avoid hypothermia. For those not accustomed to cold water, it is better to refrain from swimming. However, if you decide to enter the water, it is advisable to wear a warm wetsuit for protection against the cold.

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 Tomakomai Over the Last 30 Days

The water temperature in Tomakomai 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 Tomakomai will remain nearly unchanged in the coming days, its value will be 3.9°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 Tomakomai 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

DateCurrentAverageForecast
Feb 164.8°C4.0°C
Feb 175.0°C4.0°C
Feb 184.8°C3.8°C
Feb 195.0°C3.8°C
Feb 204.9°C3.3°C
Feb 215.0°C3.5°C
Feb 225.0°C3.3°C
Feb 235.0°C3.5°C
Feb 243.3°C4.7°C
Feb 253.3°C4.5°C
Feb 263.3°C4.3°C
Feb 273.0°C4.1°C
Feb 283.0°C3.9°C
Mar 13.5°C3.8°C
Mar 23.5°C3.8°C
Mar 34.3°C3.9°C
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Sea Temperature in Tomakomai Throughout the Year

Throughout the year, the sea temperature in Tomakomai exceeds 77°F (25°C) for 0 days, exceeds 72°F (22°C) for 0 days, and exceeds 64°F (18°C) for 87 days.

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

January

MinimumAverageMaximum
0°C4.5°C9°C

February

MinimumAverageMaximum
0°C3.5°C7°C

March

MinimumAverageMaximum
1°C4°C7°C

April

MinimumAverageMaximum
2°C5°C8°C

May

MinimumAverageMaximum
4°C9°C14°C

June

MinimumAverageMaximum
10°C14°C18°C

July

MinimumAverageMaximum
14°C18°C22°C

August

MinimumAverageMaximum
19°C22°C25°C

September

MinimumAverageMaximum
16°C20°C24°C

October

MinimumAverageMaximum
13°C17.5°C22°C

November

MinimumAverageMaximum
8°C12°C16°C

December

MinimumAverageMaximum
3°C7.5°C12°C

Monthly Water Temperature Histogram for Sea of Japan in Tomakomai

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

What Beaches Are There In and Around Tomakomai?

Furusato Beach

Furusato Beach is a 1-stars sandy beach, is located directly in Tomakomai.

Link to the location of the beach

Tomakomai Weather

FEBRUARY 24

-3°C / 3°C
broken clouds: 51-84%

humidity: 78% | wind: 3 km/h

FEBRUARY 25

-3°C / 2°C
scattered clouds: 25-50%

humidity: 72% | wind: 6 km/h

FEBRUARY 26

-3°C / 2°C
light snow

humidity: 79% | wind: 4 km/h

Hokkaido, JapanHokkaido, JapanHokkaido, Japan

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

Original name
苫小牧市
The Local Time
17:56
Time Zone
UTC+9
Sunrise
06:21
Sunset
17:15
Length of the day
10 h 54 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.

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

The average annual daytime air temperature in Tomakomai 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, Tomakomai 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 Tomakomai is 11°C (52°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 Tomakomai, the water temperature in the Sea of Japan never consistently reaches a comfortable level for swimming in any month.

Geographical Location of Tomakomai

Nearby Cities

Frequently Asked Questions About Tomakomai and its Water Temperatures

What is the current sea temperature in Tomakomai?

The water temperature today in the Sea of Japan in Tomakomai is 41°F (5°C).

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

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

What is the water temperature in Tomakomai during the winter?

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

What is the water temperature in Tomakomai during the spring?

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

What is the water temperature in Tomakomai during the summer?

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

What is the water temperature in Tomakomai during the fall?

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

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

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

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

In March, the water temperature in the Sea of Japan in Tomakomai will range between 34°F (1°C) and 45°F (7°C)