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Ehime Prefecture

Ehime Prefecture Sea Temperature

This page provides detailed information about the water temperature in Ehime 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

12.1°C

minimal

13.0°C

average

13.8°C

maximum

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

Water temperature in the Ehime Prefecture by month

Month	Minimum	Maximum
January	12°C	19°C
February	10°C	18°C
March	11°C	19°C
April	12°C	21°C
May	14°C	25°C
June	18°C	27°C
July	21°C	29°C
August	24°C	30°C
September	24°C	30°C
October	22°C	27°C
November	18°C	24°C
December	13°C	22°C

The Warmest Places on the Seaside in Ehime Prefecture Today

14°C

Uwajima

12°C

Matsuyama

List of All Coastal Cities in Ehime Prefecture

Seas and Oceans that Border Ehime Prefecture

Seto Inland Sea

Water Temperature in Ehime Prefecture: General Trends and Swimming Opportunities

Original name of the region: 愛媛県

Ehime Prefecture, located on the western coast of Shikoku Island in Japan, boasts a coastline along the Seto Inland Sea and the Pacific Ocean. This region enjoys relatively mild temperatures, particularly in the waters around popular areas like the Dogo Onsen region and the islands of the Seto Inland Sea. During the summer months, from June to August, the seawater temperature typically ranges from 75°F to 84°F (24°C to 29°C). These warm temperatures make the coastline an ideal destination for swimming, fishing, and enjoying the vibrant beach atmosphere.

As autumn arrives, the sea temperature gradually cools. In September and October, the water temperature ranges from 68°F to 75°F (20°C to 24°C), which remains comfortable for outdoor activities like kayaking and beach walks. However, by November, the temperature begins to drop further, ranging from 59°F to 64°F (15°C to 18°C), making it too cold for swimming but still suitable for coastal exploration, fishing, and scenic cruises.

In winter, the seawater temperature in Ehime Prefecture drops further, typically ranging from 50°F to 59°F (10°C to 15°C). These colder conditions make swimming and most water sports less appealing, but the mild climate of the region allows for pleasant coastal walks and visits to the area’s hot springs. Ehime’s coastline offers a peaceful retreat during the winter months, where visitors can enjoy the quiet beauty of the sea and the surrounding landscapes, particularly the islands and the renowned hot spring resorts.

Geographical Location of Ehime Prefecture

Frequently Asked Questions About Ehime Prefecture and its Water Temperatures

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

The sea temperature today on the coast of Ehime Prefecture ranges from 54°F (12.1°C) in Matsuyama to 57°F (13.8°C) in Uwajima.

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

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

What are the most popular seaside resorts in Ehime Prefecture?

The most popular places on the coast of Ehime Prefecture (Japan), based on our visitors' interest in the water temperature, are cities Matsuyama and Uwajima.

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

Ehime Prefecture (Japan) has access only to the Seto Inland Sea.