Iwate Prefecture

Iwate Prefecture, Japan © By くろふね

Iwate Prefecture Sea Temperature

This page provides detailed information about the water temperature in Iwate 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.

Water Temperature in Iwate Prefecture: General Trends and Swimming Opportunities

Original name of the region: 岩手県

Iwate Prefecture, located in the northern part of Japan’s Honshu Island along the Pacific Ocean, experiences a cooler maritime climate. During the summer months, from June to August, the water temperature along its coastline generally ranges from 59°F to 68°F (15°C to 20°C). While this is relatively cool compared to southern regions of Japan, the waters are still comfortable for activities like swimming, kayaking, and coastal exploration, especially in areas like the Sanriku Coast, which is known for its dramatic cliffs and beautiful beaches.

In the winter months, from December to February, the water temperature drops considerably, typically ranging from 36°F to 41°F (2°C to 5°C). These colder temperatures make the waters unsuitable for most water activities. The region's coastline, especially during winter, is more popular for its peaceful, scenic views and the opportunity to observe wildlife. The cooler water temperatures in winter and spring reflect the harsher climate of the northern Pacific, making summer the best time for those wishing to enjoy warmer, more inviting ocean conditions.

Geographical Location of Iwate Prefecture

Frequently Asked Questions About Iwate Prefecture and its Water Temperatures