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New Castle
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Water Temperature in the Atlantic Ocean in New Castle, New Hampshire: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in New Castle in New Hampshire, 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 New Castle
39°F
TODAY
39°F
YESTERDAY
39°F
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Atlantic Ocean in New Castle is 3.7°F. Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.
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 for Atlantic Ocean in New Castle Over the Last 30 Days
The water temperature in New Castle today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.
According to our forecast, the sea temperature in New Castle will remain nearly unchanged in the coming days, its value will be 39°F.
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 across United States to enhance accuracy.
Water temperature data for New Castle and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| Feb 15 | 39°F | 40°F | |
| Feb 16 | 39°F | 40°F | |
| Feb 17 | 39°F | 40°F | |
| Feb 18 | 39°F | 40°F | |
| Feb 19 | 39°F | 40°F | |
| Feb 20 | 39°F | 38°F | |
| Feb 21 | 39°F | 40°F | |
| Feb 22 | 39°F | 41°F | |
| Feb 23 | 39 | 39°F | |
| Feb 24 | 40 | 39°F | |
| Feb 25 | 39 | 39°F | |
| Feb 26 | 39 | 39°F | |
| Feb 27 | 39 | 39°F | |
| Feb 28 | 39 | 39°F | |
| Mar 1 | 40 | 39°F | |
| Mar 2 | 40 | 39°F |
Sea Temperature in New Castle Throughout the Year
Throughout the year, the sea temperature in New Castle exceeds 77°F (25°C) for 0 days, exceeds 72°F (22°C) for 0 days, and exceeds 64°F (18°C) for 44 days.
Below is the annual chart of sea temperature changes in the Atlantic Ocean in New Castle.
January
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 41°F | 45°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 36°F | 39°F | 43°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 36°F | 39°F | 43°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 43°F | 48°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 43°F | 50°F | 57°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 50°F | 58°F | 66°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 55°F | 64°F | 72°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 61°F | 66°F | 72°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 64°F | 70°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 56°F | 64°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 45°F | 51°F | 57°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 39°F | 46°F | 52°F |
Monthly Water Temperature Histogram for Atlantic Ocean in New Castle
You can explore detailed data on how the water temperature in New Castle varies each month:
What Beaches Are There In and Around New Castle?
New Castle Beach
New Castle Beach is a 3-stars sandy beach, is located directly in New Castle. There is parking. There are restrooms. Snorkeling is possible.
Strong Island Common
Strong Island Common is a 3-stars sandy beach, is located directly in New Castle. There is parking. There are restrooms. Strong Island Common is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Odiorne Point State Park
Odiorne Point State Park is a 4-stars sandy beach, located in a 2 km (1 miles) radius of New Castle. There is parking. There are restrooms. There are cafés. Odiorne Point State Park is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Fort Foster
Fort Foster is a 4-stars sandy beach, located in a 2 km (1 miles) radius of New Castle. There is parking. There are restrooms. There are shops. There are cafés. Fort Foster is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing.
Scuba Beach
Scuba Beach is a 4-stars sandy beach, located in a 2 km (1 miles) radius of New Castle. There is parking. There are restrooms. Scuba Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Wallis Sands State Beach
Wallis Sands State Beach is a 5-stars sandy beach, located in a 4 km (2 miles) radius of New Castle. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Snorkeling is possible. It is suitable for surfing. There is a shark hazard on the beach. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Crescent Beach
Crescent Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of New Castle. There is parking. Crescent Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Sea Point Beach
Sea Point Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of New Castle. There is parking. Sea Point Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Wallis Sands Beach At Wallis Road
Wallis Sands Beach At Wallis Road is a 5-stars sandy beach, located in a 5 km (3 miles) radius of New Castle. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Snorkeling is possible. It is suitable for surfing. There is a shark hazard on the beach. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Foss Beach
Foss Beach is a 3-stars sandy beach, located in a 6 km (4 miles) radius of New Castle. There is parking. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Rye North Beach
Rye North Beach is a 3-stars sandy beach, located in a 6 km (4 miles) radius of New Castle. There is parking. Rye North Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Wallis Sands Beach
Wallis Sands Beach is a 3-stars sandy beach, located in a 8 km (5 miles) radius of New Castle. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. It is suitable for surfing. There is a shark hazard on the beach.
Rye Harbor State Park
Rye Harbor State Park is a 3-stars pebble beach, located in a 8 km (5 miles) radius of New Castle. There is parking. There are restrooms. Rye Harbor State Park is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible.
Rye Beach
Rye Beach is a 3-stars sandy beach, located in a 8 km (5 miles) radius of New Castle. There is parking. There are restrooms. Rye Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible.
Jenness Beach At Cable Road
Jenness Beach At Cable Road is a 4-stars sandy beach, located in a 9 km (6 miles) radius of New Castle. There are lifeguards on the beach. There is parking. There are cafés. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
York Harbor Beach
York Harbor Beach is a 5-stars sandy beach, located in a 9 km (6 miles) radius of New Castle. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. York Harbor Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Jenness Beach
Jenness Beach is a 3-stars sandy beach, located in a 10 km (6 miles) radius of New Castle. There are restrooms. Snorkeling is possible. It is suitable for surfing.
Jenness State Beach
Jenness State Beach is a 2-stars sandy beach, located in a 10 km (6 miles) radius of New Castle. Snorkeling is possible.
Jenness State Beach
Jenness State Beach is a 5-stars sandy beach, located in a 10 km (6 miles) radius of New Castle. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Hartley Mason Reserve
Hartley Mason Reserve is a 3-stars sandy beach, located in a 10 km (6 miles) radius of New Castle. There is parking. There are cafés. Hartley Mason Reserve is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible.
New Castle Weather
FEBRUARY 23
16°F / 34°F
overcast clouds: 85-100%humidity: 92% | wind: 2 mph
FEBRUARY 24
36°F / 45°F
overcast clouds: 85-100%humidity: 89% | wind: 3 mph
FEBRUARY 25
32°F / 46°F
broken clouds: 51-84%humidity: 85% | wind: 2 mph
FEBRUARY 26
36°F / 39°F
scattered clouds: 25-50%humidity: 88% | wind: 1 mph
Sea Temperature in the Atlantic Ocean in New Castle: General Trends and Swimming Opportunities
The climate in the coastal region of New Hampshire, United States, is characterized by humid continental conditions with warm, humid summers and cold, snowy winters. Its coastal location also moderates temperatures somewhat, meaning that it is generally a bit cooler in the summer and warmer in the winter than inland regions.
New Castle is located in North America in the Northern Hemisphere at a latitude of 43 degrees, along the shores of the Atlantic Ocean. New Castle lies within the New Hampshire in United States.
The average annual daytime air temperature in New Castle is 59°F (15°C), with the average nighttime temperature being 41°F (5°C). The highest average daily temperature occurs in July, reaching 79°F (26°C), while the lowest is in January at 38°F (3°C). As for nighttime temperatures, the minimum average temperature of 20°F (-7°C) is recorded in January, and the maximum is in July, reaching 63°F (17°C).
According to historical data, New Castle experiences 122 rainy days per year, which accounts for 33 percent of all days in the year. On average, there are 10 rainy days each month. The wettest month is December, with 12 rainy days and 4.1 inches (105 mm) of precipitation, while the driest month is September, which typically has 8 rainy days and only 3.6 inches (92 mm) of precipitation.
The average annual water temperature in Atlantic Ocean in New Castle is 52°F (11°C). In February, the water reaches its lowest point of the year at 36°F (2°C), while in July, it peaks at 72°F (22°C). In New Castle, the water temperature in the Atlantic Ocean never consistently reaches a comfortable level for swimming in any month.
Geographical Location of New Castle
Nearby Cities
Frequently Asked Questions About New Castle and its Water Temperatures
What is the current sea temperature in New Castle?
The water temperature today in the Atlantic Ocean in New Castle is 39°F (3.7°C).
In which months is the water temperature in New Castle comfortable for swimming?
It cannot be guaranteed that the water temperature in New Castle will be comfortable for swimming in any month of the year.
What is the water temperature in New Castle during the winter?
The water temperature in the Atlantic Ocean in New Castle during the winter ranges from 36°F to 52°F (2°C to 11°C).
What is the water temperature in New Castle during the spring?
The water temperature in the Atlantic Ocean in New Castle during the spring ranges from 36°F to 57°F (2°C to 14°C).
What is the water temperature in New Castle during the summer?
The water temperature in the Atlantic Ocean in New Castle during the summer ranges from 50°F to 72°F (10°C to 22°C).
What is the water temperature in New Castle during the fall?
The water temperature in the Atlantic Ocean in New Castle during the fall ranges from 45°F to 70°F (7°C to 21°C).
Is it possible to swim in the sea in New Castle at any time of the year?
The Atlantic Ocean in New Castle is quite cool, and swimming is only possible in July, August, and September when the water temperature reaches 70°F (21°C).
What sea temperatures can I expect in New Castle in the next month?
In March, the water temperature in the Atlantic Ocean in New Castle will range between 36°F (2°C) and 43°F (6°C)