New Hampshire

New Hampshire, United States © pixabay.com

New Hampshire Sea and Water Temperature

This page provides detailed information about the water temperature in New Hampshire, United States. All cities and resorts on the coast, also in lakes and along the rivers. 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 New Hampshire: General Trends and Swimming Opportunities

New Hampshire, with its small but scenic stretch of coastline along the Atlantic Ocean, experiences relatively cool water temperatures compared to other regions. In the summer months, the ocean water along the coast typically reaches around 60°F to 70°F (16°C to 21°C), which is refreshing but not particularly warm for swimming. Due to the state's northern location and the influence of the colder currents in the North Atlantic, water temperatures remain cooler throughout the year, with winter temperatures often dropping to around 32°F (0°C), making the coast too cold for swimming.

In contrast to the coastal waters, New Hampshire's inland lakes and rivers can be more suitable for water activities. The state's lakes, such as Lake Winnipesaukee, have more variable temperatures depending on the time of year. During the summer, the surface temperatures of these lakes can rise to about 70°F to 75°F (21°C to 24°C), making them more inviting for swimming and boating. Smaller lakes at higher elevations or in the northern parts of the state may have slightly cooler waters, with temperatures hovering around 60°F (15°C) in the summer months.

As the weather cools in the fall and winter, water temperatures in both lakes and rivers drop significantly. By October, the temperatures in lakes can fall to 50°F to 60°F (10°C to 15°C), making outdoor water activities less common. Rivers, especially in the higher elevations, can also cool down rapidly, with some areas experiencing water temperatures below 40°F (4°C) during the coldest months. These colder temperatures create a less favorable environment for recreational swimming and other water-based activities, though the state's rivers remain popular for cold-water fishing year-round.

Geographical Location of New Hampshire

Frequently Asked Questions About New Hampshire and its Water Temperatures