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Portsmouth

Water Temperature in the Atlantic Ocean in Portsmouth, Virginia: Current, Historical Data and Forecast

On this page, you will find comprehensive information about the sea temperature in Portsmouth in Virginia, 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 Portsmouth

41°F

TODAY

42°F

YESTERDAY

42°F

A WEEK AGO

Analysis, Historical Data, and Forecast of Water Temperature

Today sea water temperature in the Atlantic Ocean in Portsmouth is 5.5°F. This water temperature is still quite low, and swimming in such conditions may only be comfortable for hardened individuals. It is recommended to limit the time spent in the water to avoid hypothermia. For those not accustomed to cold water, it is better to refrain from swimming. However, if you decide to enter the water, it is advisable to wear a warm wetsuit for protection against the cold.

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 Portsmouth Over the Last 30 Days

The water temperature in Portsmouth 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 Portsmouth will rise slightly in the coming days and reach 44°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 Portsmouth 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

DateCurrentAverageForecast
Feb 1542°F45°F
Feb 1642°F44°F
Feb 1742°F46°F
Feb 1843°F44°F
Feb 1943°F44°F
Feb 2042°F45°F
Feb 2142°F45°F
Feb 2241°F45°F
Feb 234642°F
Feb 244642°F
Feb 254642°F
Feb 264643°F
Feb 274743°F
Feb 284744°F
Mar 14644°F
Mar 24644°F
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Sea Temperature in Portsmouth Throughout the Year

Throughout the year, the sea temperature in Portsmouth exceeds 77°F (25°C) for 76 days, exceeds 72°F (22°C) for 133 days, and exceeds 64°F (18°C) for 169 days.

Below is the annual chart of sea temperature changes in the Atlantic Ocean in Portsmouth.

January

MinimumAverageMaximum
41°F47°F54°F

February

MinimumAverageMaximum
39°F46°F54°F

March

MinimumAverageMaximum
43°F50°F57°F

April

MinimumAverageMaximum
48°F55°F63°F

May

MinimumAverageMaximum
55°F64°F72°F

June

MinimumAverageMaximum
63°F73°F82°F

July

MinimumAverageMaximum
73°F81°F88°F

August

MinimumAverageMaximum
73°F80°F86°F

September

MinimumAverageMaximum
72°F78°F84°F

October

MinimumAverageMaximum
61°F69°F77°F

November

MinimumAverageMaximum
54°F61°F68°F

December

MinimumAverageMaximum
43°F51°F59°F

Monthly Water Temperature Histogram for Atlantic Ocean in Portsmouth

You can explore detailed data on how the water temperature in Portsmouth varies each month:

Portsmouth Weather

FEBRUARY 23

37°F / 54°F
clear sky

humidity: 71% | wind: 1 mph

FEBRUARY 24

43°F / 61°F
clear sky

humidity: 70% | wind: 2 mph

FEBRUARY 25

45°F / 63°F
clear sky

humidity: 67% | wind: 2 mph

FEBRUARY 26

50°F / 59°F
overcast clouds: 85-100%

humidity: 70% | wind: 2 mph

Virginia, United StatesVirginia, United StatesVirginia, United States

Sea Temperature in the Atlantic Ocean in Portsmouth: General Trends and Swimming Opportunities

Original name
Portsmouth
The Local Time
09:14 PM
Time Zone
UTC-5
Sunrise
06:45 AM
Sunset
05:52 PM
Length of the day
11 h 7 m

The coastal region of Virginia, United States, experiences a humid subtropical climate with hot, humid summers and mild to cool winters. It receives moderate precipitation spread throughout the year, with potential for heavier rainfall during hurricane season.

Portsmouth is located in North America in the Northern Hemisphere at a latitude of 37 degrees, along the shores of the Atlantic Ocean. Portsmouth lies within the Virginia in United States.

The average annual daytime air temperature in Portsmouth is 64°F (18°C), with the average nighttime temperature being 52°F (11°C). The highest average daily temperature occurs in July, reaching 85°F (29°C), while the lowest is in January at 42°F (6°C). As for nighttime temperatures, the minimum average temperature of 33°F (1°C) is recorded in January, and the maximum is in July, reaching 71°F (22°C).

According to historical data, Portsmouth experiences 117 rainy days per year, which accounts for 32 percent of all days in the year. On average, there are 10 rainy days each month. The wettest month is May, with 10 rainy days and 3.6 inches (90 mm) of precipitation, while the driest month is October, which typically has 8 rainy days and only 3.3 inches (84 mm) of precipitation.

The average annual water temperature in Atlantic Ocean in Portsmouth is 63°F (17°C). In February, the water reaches its lowest point of the year at 39°F (4°C), while in July, it peaks at 88°F (31°C). The months suitable for comfortable beach vacations and swimming in the Atlantic Ocean are July, August, and September. During this period, the water temperature stays above 68°F (20°C) and can reach up to 88°F (31°C) on some days.

Geographical Location of Portsmouth

Frequently Asked Questions About Portsmouth and its Water Temperatures

What is the current sea temperature in Portsmouth?

The water temperature today in the Atlantic Ocean in Portsmouth is 41°F (5.1°C).

In which months is the water temperature in Portsmouth comfortable for swimming?

The water temperature in the Atlantic Ocean in Portsmouth is comfortable for swimming and beach vacations in July, August, and September.

What is the water temperature in Portsmouth during the winter?

The water temperature in the Atlantic Ocean in Portsmouth during the winter ranges from 39°F to 59°F (4°C to 15°C).

What is the water temperature in Portsmouth during the spring?

The water temperature in the Atlantic Ocean in Portsmouth during the spring ranges from 43°F to 72°F (6°C to 22°C).

What is the water temperature in Portsmouth during the summer?

The water temperature in the Atlantic Ocean in Portsmouth during the summer ranges from 63°F to 88°F (17°C to 31°C).

What is the water temperature in Portsmouth during the fall?

The water temperature in the Atlantic Ocean in Portsmouth during the fall ranges from 54°F to 84°F (12°C to 29°C).

Is it possible to swim in the sea in Portsmouth at any time of the year?

The Atlantic Ocean in Portsmouth is quite cool, and swimming is only possible in May, June, July, August, September, and October when the water temperature reaches 70°F (21°C).

Is Portsmouth a popular tourist destination for beach vacations?

Portsmouth has a moderate level of popularity for beach vacations; while it does receive some visitors, it is not among the top seaside destinations, as other locations may offer more favorable conditions.

What sea temperatures can I expect in Portsmouth in the next month?

In March, the water temperature in the Atlantic Ocean in Portsmouth will range between 43°F (6°C) and 57°F (14°C)