World sea water temperatures

Water temperature in Southport (ME) in May

Is it warm enough to swim in Southport in May? Average water temperature in Southport in May is 47.5°F and therefore is not suitable for comfortable swimming. The warmest sea in Southport in May is 56.8°F, and the coldest is 41.9°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Southport

Changes water temperature in Southport in May 2025, 2024

To get an accurate forecast for the water temperature in Southport for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Southport, 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 143°F45.9°F41.9°F46°F
May 245.3°F46.4°F42.1°F46.4°F
May 344.2°F46°F42.8°F46°F
May 444.2°F46.2°F42.6°F47.7°F
May 544.1°F46.4°F43.3°F47.1°F
May 644.2°F47.3°F43.2°F47.3°F
May 745.1°F46.9°F43.2°F47.7°F
May 845°F48°F43.3°F48.2°F
May 944.8°F46.4°F43.9°F48.6°F
May 1044.8°F46.2°F43.2°F48.6°F
May 1145.3°F46.2°F44.1°F48.7°F
May 1246.8°F46.4°F43.3°F48.7°F
May 1346.4°F47.8°F43.7°F50.2°F
May 1449.1°F48°F44.4°F51.6°F
May 1548.6°F47.1°F44.4°F51.3°F
Day 2025 2024 Min Max
May 1648.4°F47.3°F44.6°F50.4°F
May 1749.3°F49.6°F44.6°F51.1°F
May 1850.4°F50°F44.2°F50.7°F
May 1950.4°F49.8°F43.7°F52.2°F
May 2050.2°F49.3°F43.9°F52.7°F
May 2148.4°F48.7°F44.1°F53.1°F
May 2248.7°F51.8°F45.3°F53.6°F
May 2348°F52.5°F45.7°F55.8°F
May 2447.3°F51.6°F45.5°F55.8°F
May 2547.3°F51.4°F45.7°F54.9°F
May 2648.9°F50.9°F46.6°F56.8°F
May 2748°F51.4°F46.9°F54.9°F
May 2848.9°F52.3°F46.8°F55.4°F
May 2950.2°F53.8°F46.9°F54.7°F
May 3051.1°F52.9°F46.9°F54.1°F
May 3151.1°F52.2°F47.1°F55.2°F
Southport water temp chart in May

Average water temperature in Southport in May over a decade

20162017201820192020
47.8°F45.9°F48.2°F45.9°F46.6°F
20212022202320242025
48.6°F48.4°F48.6°F48.9°F47.3°F

Southport sea state in May

Chart comparing the height of waves in Southport 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 Southport in May

Southport 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
Christmas Cove47.1°F41.4°F56.3°F
Bailey Island48.6°F42.4°F58.6°F
Harpswell Center48.9°F42.4°F58.5°F
Freeport48.9°F42.4°F58.5°F
Cushing46.9°F41°F54.7°F
Casco Bay48.6°F42.4°F59°F
Saint George46.9°F40.8°F54.5°F
Yarmouth49.1°F42.6°F58.6°F
South Thomaston46.8°F40.6°F54.5°F
Gulf of Maine48.7°F42.3°F59.5°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 Southport 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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