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Nashua

Water Temperature in Nashua in Merrimack River: Current and Forecast

On this page, you will find comprehensive information about the water temperature in Nashua in Merrimack River, 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 Nashua

20.1°C

TODAY

20.1°C

YESTERDAY

19.7°C

A WEEK AGO

As of today, the minimum water temperature in Nashua ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.

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.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Merrimack River in Nashua Over the Last 30 Days

Today the water temperature in Nashua is higher than the same day in previous years. The water temperature range here in June is from 14°C to 22°C. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.

The forecasted water temperature values for Nashua are presented in the table below.

The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.

Table of Daily Water Temperature Data

DateCurrentAverageForecast
Jun 2119.7°C18.5°C
Jun 2219.7°C18.5°C
Jun 2319.6°C18.5°C
Jun 2419.6°C18.5°C
Jun 2520.1°C18.5°C
Jun 2620.1°C18.5°C
Jun 2720.1°C18.5°C
Jun 2820.1°C18.5°C
Jun 2918.5°C20.0°C
Jun 3018.5°C19.9°C
Jul 120.0°C19.9°C
Jul 220.0°C19.9°C
Jul 320.0°C19.9°C
Jul 420.0°C19.9°C
Jul 520.0°C19.9°C
Jul 620.0°C19.9°C
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Nashua by Month

January

MinimumAverageMaximum
1°C5°C9°C

February

MinimumAverageMaximum
1°C5°C9°C

March

MinimumAverageMaximum
1°C6°C11°C

April

MinimumAverageMaximum
4°C10°C16°C

May

MinimumAverageMaximum
8°C13.4°C21°C

June

MinimumAverageMaximum
14°C18.5°C22°C

July

MinimumAverageMaximum
17°C20°C24°C

August

MinimumAverageMaximum
17°C21.4°C23°C

September

MinimumAverageMaximum
11°C17.6°C19°C

October

MinimumAverageMaximum
8°C13.3°C16°C

November

MinimumAverageMaximum
3°C8.1°C16°C

December

MinimumAverageMaximum
3°C4.7°C8°C

Monthly Water Temperature Histogram for Merrimack River in Nashua

Nashua Weather

JUNE 28

13°C / 15°C
moderate rain

rain: 60% | wind: 12 km/h

JUNE 29

11°C / 21°C
heavy intensity rain

rain: 47% | wind: 13 km/h

JUNE 30

11°C / 30°C
overcast

rain: 14% | wind: 12 km/h

JULY 1

17°C / 33°C
light drizzle

rain: 48% | wind: 16 km/h

Water Temperature in Nashua: General Trends and Swimming Opportunities

In Nashua, New Hampshire, the Merrimack River is a prominent waterway, but it is not commonly used for swimming due to its fast currents and the quality of the water. During the warmer months, the river’s temperature can range between 60°F (15°C) to 75°F (24°C), with the highest temperatures occurring in late summer. While these temperatures might be suitable for wading or kayaking, they are generally not ideal for recreational swimming due to the river’s unpredictable current and depth variations.

Though the river offers fantastic opportunities for boating, fishing, and other water-based activities, swimming in the Merrimack River in Nashua is not considered safe. Strong currents, varying water quality, and potential hazards from submerged debris make swimming risky. Local authorities often advise against swimming in the river, as the conditions may not be conducive to a safe experience.

For those seeking a more traditional swimming experience, Nashua has several public parks, community pools, and nearby lakes that provide safe and clean areas for swimming. These locations offer a much more suitable environment for swimming, with calmer water and controlled conditions, making them a better option for anyone looking to enjoy a refreshing dip.

Geographical Location of Nashua

Frequently Asked Questions About Nashua and its Water Temperatures

What is the current water temperature in Nashua?

The water temperature today in Nashua is 68°F (20.1°C).

What is the water temperature in Nashua during the summer months?

The average water temperature in Nashua during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Nashua in May?

The average water temperature in Nashua in May ranges from 46°F to 70°F (8°C to 21°C).

What is the water temperature in Nashua in September?

The average water temperature in Nashua in September is typically between 52°F to 66°F (11°C to 19°C).

Is it possible to swim in the Merrimack River in Nashua, and what are the available options for doing so?

Yes, it is possible to swim in the Merrimack River in Nashua. You may enter through public access points such as Greely Park and Sullivan Park, or via a kayak or canoe.