World sea water temperatures

Water temperature in Dennis (MA) in May

Is it warm enough to swim in Dennis in May? Average water temperature in Dennis in May is 52.5°F and therefore is not suitable for comfortable swimming. The warmest sea in Dennis in May is 62.6°F, and the coldest is 45°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Dennis

Changes water temperature in Dennis in May 2025, 2024

To get an accurate forecast for the water temperature in Dennis for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Dennis, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of May.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
May 150.4°F51.6°F45°F51.6°F
May 251.3°F49.6°F46.2°F51.3°F
May 351.3°F50°F46.4°F51.3°F
May 448.7°F51.1°F46°F51.1°F
May 549.8°F49.1°F46.9°F52.5°F
May 650.2°F49.5°F46.9°F52.3°F
May 753.2°F48°F46.4°F53.2°F
May 853.4°F48.9°F47.5°F54.1°F
May 952.7°F49.8°F48°F54.5°F
May 1054.1°F52.7°F48.2°F54.1°F
May 1154.7°F51.8°F47.7°F55.4°F
May 1255°F50.7°F47.8°F55.2°F
May 1353.1°F52.5°F47.8°F56.3°F
May 1453.8°F52.3°F47.8°F57.2°F
May 1552.5°F52.7°F49.1°F56.8°F
Day 2025 2024 Min Max
May 1653.1°F52.3°F49.1°F55.9°F
May 1755.9°F52.3°F49.1°F57.4°F
May 1857.2°F52.3°F49.3°F57.2°F
May 1957.4°F52.9°F50°F59.2°F
May 2055.6°F51.8°F49.6°F59.2°F
May 2155.2°F50.7°F49.5°F59.2°F
May 2254°F54°F50.4°F59°F
May 2353.6°F55.9°F51.1°F59.2°F
May 2454.1°F58.3°F51.4°F60.8°F
May 2554.7°F59.4°F51.8°F60.1°F
May 2656.8°F57°F51.4°F61.2°F
May 2755.8°F56.5°F52°F60.3°F
May 2855.4°F60.4°F53.1°F61.2°F
May 2955.4°F61.5°F52.7°F61.5°F
May 3053.1°F60.1°F53.1°F61.2°F
May 3156.3°F61.9°F53.1°F62.6°F
Dennis water temp chart in May

Average water temperature in Dennis in May over a decade

20162017201820192020
51.8°F49.8°F51.6°F52.5°F52.2°F
20212022202320242025
55°F54°F55.9°F53.4°F53.8°F

Dennis sea state in May

Chart comparing the height of waves in Dennis in May over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Dennis in May

Dennis water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in May?

Want to know where the water temperature in May is good for swimming? Select the continent of interest, the day of the month and the required water temperature

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

Temperature in neighboring cities

The nearest locations with the average water temperature in May. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Harborview Beach52.5°F45°F62.6°F
Chapin Beach52.7°F45°F63°F
Orleans51.6°F44.4°F62.2°F
Skaket Beach51.6°F44.4°F62.2°F
First Encounter Beach51.6°F44.4°F62.2°F
Crosby Landing Beach51.6°F44.4°F62.2°F
Linnell Landing Beach51.6°F44.4°F62.2°F
Ellis Landing beach51.6°F44.4°F62.2°F
Rock Harbor Beach51.6°F44.4°F62.2°F
Thumpertown Beach51.6°F44.4°F62.2°F

Massachusetts photo gallery

  • Massachusetts
  • Sunset at old silver beach
  • Massachusetts
  • Cape Cod Canal 2024

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.

Vote for Massachusetts best beach

Current rating: (0 votes cast)

If you know this place (Dennis) 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 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