World sea water temperatures

Water temperature in Harpswell Center (ME) in May

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Is it warm enough to swim in Harpswell Center in May? Average water temperature in Harpswell Center in May is 48.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Harpswell Center in May is 58.5°F, and the coldest is 42.4°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Harpswell Center

Changes water temperature in Harpswell Center in May 2025, 2024

To get an accurate forecast for the water temperature in Harpswell Center for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Harpswell Center, 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 145.7°F46.9°F42.4°F47.7°F
May 246.4°F47.1°F43°F47.5°F
May 346°F46.9°F43.9°F47.3°F
May 446°F47.5°F43.9°F48.6°F
May 545.7°F47.1°F44.4°F48.6°F
May 645.7°F48.9°F44.6°F49.1°F
May 747.1°F50.2°F44.4°F50.7°F
May 846.8°F50.2°F44.6°F50.7°F
May 946.2°F48.9°F45°F49.6°F
May 1049.5°F48.6°F44.4°F50°F
May 1148°F48.2°F45.1°F50.7°F
May 1248.2°F48.6°F45.3°F49.5°F
May 1347.8°F51.1°F45°F51.1°F
May 1450°F50.9°F45.3°F50.9°F
May 1549.1°F49.8°F45.7°F50.7°F
Day 2025 2024 Min Max
May 1649.3°F49.8°F46°F51.3°F
May 1750.2°F52.3°F45.7°F52.7°F
May 1850.9°F52°F45.1°F52.3°F
May 1950.4°F53.2°F44.6°F53.6°F
May 2050.2°F52.7°F44.8°F55°F
May 2150°F52°F45.1°F57.2°F
May 2249.6°F55°F46.4°F57.6°F
May 2349.1°F54.9°F46.8°F57.4°F
May 2448.7°F55.8°F47.3°F57°F
May 2548.9°F55°F47.8°F56.5°F
May 2650.2°F56.1°F48.4°F58.5°F
May 2750°F55°F48.6°F56.7°F
May 2850.7°F54.5°F48.4°F57°F
May 2951.6°F56.3°F48.6°F56.5°F
May 3050.9°F55.9°F48.6°F56.1°F
May 3151.1°F55.6°F48.9°F57.4°F
Harpswell Center water temp chart in May

Average water temperature in Harpswell Center in May over a decade

20162017201820192020
48.2°F47.1°F49.8°F47.7°F48.4°F
20212022202320242025
50.7°F50.2°F50.2°F51.4°F48.7°F

Harpswell Center sea state in May

Chart comparing the height of waves in Harpswell Center 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 Harpswell Center in May

Harpswell Center 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
Freeport48.9°F42.4°F58.5°F
Bailey Island48.6°F42.4°F58.6°F
Yarmouth49.1°F42.6°F58.6°F
Casco Bay48.6°F42.4°F59°F
Phippsburg48.2°F42.3°F57.6°F
Woolwich48.2°F42.3°F57.4°F
Peaks Island48.9°F42.6°F59.7°F
Popham Beach48°F42.1°F57.9°F
Portland48.9°F42.4°F59.7°F
Reid State Park47.8°F42.1°F57.4°F

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[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.

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Our report for Harpswell Center 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.

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