Manchester — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Manchester, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Manchester today is 20.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature 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.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 23 | 20.6°C | 18.1°C | |
| JUN 24 | 20.6°C | 18.1°C | |
| JUN 25 | 20.6°C | 18.1°C | |
| JUN 26 | 20.6°C | 18.1°C | |
| JUN 27 | 20.7°C | 18.1°C | |
| JUN 28 | 20.8°C | 18.1°C | |
| JUN 29 | 20.3°C | 18.1°C | |
| JUN 30 | 20.1°C | 18.1°C | |
| JUL 1 | 20.0°C | 20.1°C | |
| JUL 2 | 20.0°C | 20.1°C | |
| JUL 3 | 20.0°C | 20.1°C | |
| JUL 4 | 20.0°C | 20.1°C | |
| JUL 5 | 20.0°C | 20.1°C | |
| JUL 6 | 20.0°C | 20.1°C | |
| JUL 7 | 20.0°C | 20.1°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 0°C | 5°C | 9°C |
| February | 0°C | 5°C | 9°C |
| March | 0°C | 6°C | 11°C |
| April | 3°C | 10°C | 16°C |
| May | 8°C | 13°C | 21°C |
| June | 14°C | 18°C | 23°C |
| July | 17°C | 20°C | 24°C |
| August | 17°C | 22°C | 26°C |
| September | 11°C | 17°C | 22°C |
| October | 8°C | 14°C | 20°C |
| November | 2°C | 10°C | 16°C |
| December | 0°C | 5°C | 8°C |
Manchester: Weather Forecast
July 1
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July 3
July 4
July 5
Location & Local Information
In Manchester, New Hampshire, the Merrimack River flows through the heart of the city, but it is not typically considered a prime location for swimming. The water temperature in the river can vary greatly depending on the season. During the summer months, the water temperature typically ranges from 60°F (15°C) to 75°F (24°C), with the warmest temperatures occurring in late summer. These temperatures can be suitable for some light recreational activities like wading, but the river’s strong currents and unpredictable water quality make it less than ideal for swimming.
While the Merrimack River provides excellent opportunities for activities such as fishing, kayaking, and boating, swimming is generally discouraged due to the potential hazards posed by the current and water conditions. The river's flow is fast-moving in some areas, and the water can be murky, which may not provide the best swimming environment.
For those looking for a more traditional swimming experience, Manchester offers other options, such as local swimming pools or nearby parks with designated swimming areas. For example, nearby lakes or reservoirs may offer clearer and warmer waters for swimming, making them a safer and more enjoyable option compared to the Merrimack River for anyone seeking a dip.