World sea water temperatures

Dennis Port water temp

This data the coastal Dennis Port sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Dennis Port

Water temperature in Dennis Port today is 70.2°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Dennis Port was recorded in 2018 and was 73.2°F, and the coldest was recorded in 2007 at 65.3°F. Sea water temperature in Dennis Port is expected to drop to 67.6°F in the next 10 days. September average water temperature in Dennis Port is 66.9°F, the minimum temperature is 61°F, and the maximum is 74.3°F.

The swimming season in Dennis Port lasts from July to September. During those months, Dennis Port water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Dennis Port in winter reaches 41°F, in spring 45.3°F, in summer the average temperature rises to 67.1°F, and in autumn it is 59.4°F.

Dennis Port water temperature now


September 5, 2025
today temp
70.2°F
September 4, 2025
yesterday temp
68.7°F


The sea salinity in Dennis Port is 31.90‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Dennis Port for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Dennis Port. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Dennis Port. Data in table shown for September 5, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

0-3 h3-6 h6-9 h9-12 h
1' 9"1' 10"1' 11"2' 1"
0.53 m0.55 m0.59 m0.63 m
12-15 h15-18 h18-21 h21-24 h
2' 4"2' 7"3' 0"3' 2"
0.7 m0.8 m0.91 m0.96 m

Surf report in Dennis Port

Dennis Port wave height and direction

Dennis Port weather forecast

Dennis Port wind speed and direction

Current temperature and weather

Data in a table show Dennis Port temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Dennis Port.

0-3 h3-6 h6-9 h9-12 h
63.9°F64.8°F65.7°F67.5°F
12-15 h15-18 h18-21 h21-24 h
70.7°F71.4°F70°F69.1°F

You may also be interested in other sections of our site for Dennis Port: Sunrise and Sunset, Tides

Dennis Port water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Dennis Port. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Dennis Port on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

MonthAvrMinMax
January40.1°F34°F47.1°Fcold
Sea water temperature in Dennis Port in January
February37.9°F30.9°F42.3°Fcold
Sea water temperature in Dennis Port in February
March39.4°F32.5°F46.6°Fcold
Sea water temperature in Dennis Port in March
April44.4°F36.9°F50.7°Fcold
Sea water temperature in Dennis Port in April
May52°F45°F61.9°Fcold
Sea water temperature in Dennis Port in May
June60.8°F53.4°F72.7°Fcold
Sea water temperature in Dennis Port in June
July69.4°F60.8°F77.2°Fwarm
Sea water temperature in Dennis Port in July
August70.9°F63.9°F77.2°Fwarm
Sea water temperature in Dennis Port in August
September66.9°F61°F74.3°Fcold
Sea water temperature in Dennis Port in September
October59.7°F52.7°F68°Fcold
Sea water temperature in Dennis Port in October
November51.4°F44.1°F60.1°Fcold
Sea water temperature in Dennis Port in November
December44.8°F37.2°F50.9°Fcold
Sea water temperature in Dennis Port in December

Chart monthly average water temperature in Dennis Port

Water temperature in Dennis Port

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Nearby beaches and cities

The nearest beaches and cities from Dennis Port with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

WaterWeatherWave
Sea Street Beach70.2°F71.6°F2' 4"
Bass River71.4°F71.6°F2' 3"
Smugglers Beach71.4°F71.6°F2' 3"
Bank Street Beach67.6°F71.6°F2' 4"
Harwich Port71.2°F71.6°F1' 11"
West Dennis72°F71.6°F1' 9"
West Yarmouth72.3°F71.6°F2' 3"
Sea Gull Beach72.3°F71.6°F2' 3"
Seagull Beach72.3°F71.6°F2' 3"
Lewis Bay72.3°F71.6°F2' 3"

Cape Cod photo gallery

  • Cape Cod
  • Sunset at old silver beach
  • Fisherman of New Seabury
  • Golden@sunset

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

Other names for Dennis Port

Dennisport

Vote for Cape Cod best beach

Current rating: (0 votes cast)

If you know this place (Dennis Port) and want to leave your comment or rate it, then fill out the following form.

Your rating for this place:

Does this place have a "Blue Flag" award [1], are there rip currents and what type of beach is it, sand or pebble:

Is the beach a dog-friendly place, child friendly or a nudist beach?


Your comments for this place (water quality, crowds, facilities, activities, lifeguards, service etc.):



[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

Get widget or API for your website

Our report for Dennis Port is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

Contact us: admin@seatemperature.info
privacy policy