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Niigata Prefecture

Niigata Prefecture, Japan

Niigata Prefecture, Japan © By Kosado

Niigata Prefecture Sea Temperature

This page provides detailed information about the water temperature in Niigata Prefecture, Japan. All countries, cities and resorts on the coast. The range of sea temperatures for today. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Sea Temperature

10.4°C

minimal

10.4°C

average

10.4°C

maximum

Graph of Sea Temperature Changes in Niigata Prefecture Over the Last 60 Days

Water temperature in the Niigata Prefecture by month

MonthMinimumMaximum
January8°C15°C
February7°C13°C
March8°C12°C
April8°C14°C
May10°C19°C
June15°C25°C
July20°C28°C
August24°C30°C
September22°C30°C
October18°C26°C
November13°C22°C
December9°C19°C

The Warmest Places on the Seaside in Niigata Prefecture Today

List of All Coastal Cities in Niigata Prefecture

Seas and Oceans that Border Niigata Prefecture

Niigata Prefecture, Japan

Niigata Prefecture, Japan © By 新潟市

Japan: List of Regions

Water Temperature in Niigata Prefecture: General Trends and Swimming Opportunities

Original name of the region: 新潟県

Niigata Prefecture, located along the western coast of Japan facing the Sea of Japan, experiences distinct seasonal variations in water temperature. In the summer months, from June to August, the sea temperature along Niigata’s coastline typically ranges from 68°F to 75°F (20°C to 24°C). These warm temperatures make the coast, including areas like the beaches in Niigata City and the Sado Island coastline, a popular spot for swimming, fishing, and other coastal activities. The relatively calm and warm waters are inviting for both locals and visitors during the peak of the tourist season.

As autumn arrives, the sea temperature begins to gradually decrease. In September and October, the water temperature cools to between 59°F and 66°F (15°C to 19°C), making it still comfortable for some hardy swimmers and outdoor enthusiasts. However, as the season progresses into November, the water becomes significantly colder, with temperatures ranging from 50°F to 59°F (10°C to 15°C). By this time, swimming and other water activities become less common, but the changing scenery along the coast remains a draw.

During the winter months, the water temperature along Niigata Prefecture’s coastline can drop to around 39°F to 46°F (4°C to 8°C), especially as the winds from Siberia influence the region's climate. These cold temperatures make swimming and most water-based activities impractical, but the cooler waters contribute to the serene and dramatic winter coastal landscapes. While the colder months may deter swimmers, Niigata’s coastline is still valued for its scenic beauty and as a peaceful destination for those looking to enjoy the region’s natural surroundings during winter.

Geographical Location of Niigata Prefecture

Frequently Asked Questions About Niigata Prefecture and its Water Temperatures

What is the current sea temperature on the coast of Niigata Prefecture in Japan?

The sea temperature today on the coast of Niigata Prefecture ranges from 51°F (10.4°C) in Niigata to 51°F (10.4°C) in Niigata.

When does the sea in Niigata Prefecture in Japan reach a comfortable swimming temperature?

In Niigata Prefecture (Japan) the sea temperature can reach 70°F (21°C) in June, July, August, September, and October. It should be noted that the mentioned values apply to the warmest point of the region. In other areas of Niigata Prefecture, the values may vary.

What are the most popular seaside resorts in Niigata Prefecture?

The most popular place on the coast of Niigata Prefecture (Japan), based on our visitors' interest in the water temperature, is city of Niigata.

Which seas and oceans does the Niigata Prefecture have access to?

Niigata Prefecture (Japan) has access only to the Sea of Japan.