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Hokkaido
Water Temperature in the Sea of Japan in Hokkaido, Japan: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Hokkaido 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 Hokkaido
-1.1°C
TODAY
-1.1°C
YESTERDAY
-1.1°C
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Sea of Japan in Hokkaido is -1.1°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 Hokkaido Over the Last 30 Days
The water temperature in Hokkaido 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 Hokkaido will remain nearly unchanged in the coming days, its value will be -1.0°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 Hokkaido 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 |
|---|---|---|---|
| Feb 15 | -1.1°C | -1.3°C | |
| Feb 16 | -0.7°C | -1.0°C | |
| Feb 17 | -1.2°C | -1.0°C | |
| Feb 18 | -1.0°C | -0.8°C | |
| Feb 19 | -0.8°C | -1.0°C | |
| Feb 20 | -1.1°C | -1.0°C | |
| Feb 21 | -1.1°C | -0.8°C | |
| Feb 22 | -1.1°C | -1.0°C | |
| Feb 23 | -1.3°C | -1.1°C | |
| Feb 24 | -0.8°C | -1.1°C | |
| Feb 25 | -1.0°C | -1.1°C | |
| Feb 26 | -0.8°C | -1.1°C | |
| Feb 27 | -1.0°C | -1.1°C | |
| Feb 28 | -1.0°C | -1.1°C | |
| Mar 1 | -0.5°C | -1.0°C | |
| Mar 2 | -1.0°C | -1.0°C |
Sea Temperature in Hokkaido Throughout the Year
Throughout the year, the sea temperature in Hokkaido exceeds 77°F (25°C) for 0 days, exceeds 72°F (22°C) for 0 days, and exceeds 64°F (18°C) for 5 days.
Below is the annual chart of sea temperature changes in the Sea of Japan in Hokkaido.
January
| Minimum | Average | Maximum |
|---|---|---|
| -2°C | 0°C | 2°C |
February
| Minimum | Average | Maximum |
|---|---|---|
| -2°C | -0.5°C | 1°C |
March
| Minimum | Average | Maximum |
|---|---|---|
| -2°C | 0°C | 2°C |
April
| Minimum | Average | Maximum |
|---|---|---|
| -2°C | 1.5°C | 5°C |
May
| Minimum | Average | Maximum |
|---|---|---|
| 0°C | 4.5°C | 9°C |
June
| Minimum | Average | Maximum |
|---|---|---|
| 6°C | 11°C | 16°C |
July
| Minimum | Average | Maximum |
|---|---|---|
| 11°C | 15.5°C | 20°C |
August
| Minimum | Average | Maximum |
|---|---|---|
| 13°C | 17.5°C | 22°C |
September
| Minimum | Average | Maximum |
|---|---|---|
| 11°C | 15°C | 19°C |
October
| Minimum | Average | Maximum |
|---|---|---|
| 7°C | 12.5°C | 18°C |
November
| Minimum | Average | Maximum |
|---|---|---|
| 1°C | 7°C | 13°C |
December
| Minimum | Average | Maximum |
|---|---|---|
| 0°C | 4°C | 8°C |
Monthly Water Temperature Histogram for Sea of Japan in Hokkaido
You can explore detailed data on how the water temperature in Hokkaido varies each month:
Hokkaido Weather
FEBRUARY 23
-12°C / -1°C
overcast clouds: 85-100%humidity: 90% | wind: 3 km/h
FEBRUARY 24
-3°C / 1°C
light snowhumidity: 86% | wind: 5 km/h
FEBRUARY 25
-5°C / 0°C
light snowhumidity: 82% | wind: 8 km/h
FEBRUARY 26
-6°C / -3°C
light snowhumidity: 85% | wind: 6 km/h
Sea Temperature in the Sea of Japan in Hokkaido: General Trends and Swimming Opportunities
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.
Hokkaido is located in Asia in the Northern Hemisphere at a latitude of 44 degrees, along the shores of the Sea of Japan. Hokkaido lies within the Hokkaido in Japan.
The average annual daytime air temperature in Hokkaido 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, Hokkaido 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 Hokkaido is 7°C (45°F). In January, the water reaches its lowest point of the year at -2°C (28°F), while in August, it peaks at 22°C (72°F). In Hokkaido, the water temperature in the Sea of Japan never consistently reaches a comfortable level for swimming in any month.
Geographical Location of Hokkaido
Nearby Cities
Frequently Asked Questions About Hokkaido and its Water Temperatures
What is the current sea temperature in Hokkaido?
The water temperature today in the Sea of Japan in Hokkaido is 30°F (-1.1°C).
In which months is the water temperature in Hokkaido comfortable for swimming?
It cannot be guaranteed that the water temperature in Hokkaido will be comfortable for swimming in any month of the year.
What is the water temperature in Hokkaido during the winter?
The water temperature in the Sea of Japan in Hokkaido during the winter ranges from -2°C to 8°C (28°F to 46°F).
What is the water temperature in Hokkaido during the spring?
The water temperature in the Sea of Japan in Hokkaido during the spring ranges from -2°C to 9°C (28°F to 48°F).
What is the water temperature in Hokkaido during the summer?
The water temperature in the Sea of Japan in Hokkaido during the summer ranges from 6°C to 22°C (43°F to 72°F).
What is the water temperature in Hokkaido during the fall?
The water temperature in the Sea of Japan in Hokkaido during the fall ranges from 1°C to 19°C (34°F to 66°F).
Is it possible to swim in the sea in Hokkaido at any time of the year?
The Sea of Japan in Hokkaido is quite cool, and swimming is only possible in , and August when the water temperature reaches 21°C (70°F).
Is Hokkaido a popular tourist destination for beach vacations?
Hokkaido 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 Hokkaido in the next month?
In March, the water temperature in the Sea of Japan in Hokkaido will range between 28°F (-2°C) and 36°F (2°C)