World sea water temperatures

Water temperature in Frenchboro (ME) in March

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Is it warm enough to swim in Frenchboro in March? Average water temperature in Frenchboro in March is 38.5°F and therefore is not suitable for comfortable swimming. The warmest sea in Frenchboro in March is 43°F, and the coldest is 35.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Frenchboro

Changes water temperature in Frenchboro in March 2026, 2025

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

You can choose any other years:

Year 1:   Year 2:


Day 2026 2025 Min Max
March 137.4°F36.9°F36°F41.5°F
March 237°F36.5°F36°F41°F
March 337°F36.5°F36°F41°F
March 437°F36.7°F36°F40.8°F
March 537.4°F36.9°F36°F41.2°F
March 637.4°F36.9°F35.8°F40.6°F
March 737.6°F36.1°F35.8°F40.6°F
March 837.2°F36.7°F36°F40.6°F
March 937.6°F37°F35.8°F41.2°F
March 10 36.3°F36.3°F41°F
March 11 37°F36.1°F40.8°F
March 12 37°F35.1°F40.8°F
March 13 37.2°F36°F40.6°F
March 14 36°F35.1°F40.3°F
March 15 36.3°F35.4°F40.1°F
Day 2026 2025 Min Max
March 16 36.7°F35.6°F39.9°F
March 17 36.7°F36°F40.5°F
March 18 37°F35.8°F41.5°F
March 19 38.5°F36°F41°F
March 20 39.2°F36.3°F41.2°F
March 21 37.9°F36.3°F41.7°F
March 22 38.3°F36.3°F43°F
March 23 38.1°F35.8°F42.3°F
March 24 36.3°F35.8°F41.7°F
March 25 38.1°F36.1°F41.5°F
March 26 37.9°F36.1°F41°F
March 27 38.3°F36.3°F40.3°F
March 28 38.7°F36.3°F40.3°F
March 29 38.5°F36.1°F40.6°F
March 30 37.6°F36.5°F40.5°F
March 31 40.1°F36.5°F40.6°F
Frenchboro water temp chart in March

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Average water temperature in Frenchboro in March over a decade

20162017201820192020
39.4°F38.5°F39.6°F36.1°F39.6°F
20212022202320242025
40.1°F39°F39.9°F39°F37.4°F

Frenchboro sea state in March

Chart comparing the height of waves in Frenchboro in March 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 Frenchboro in March

Frenchboro 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 March?

Want to know where the water temperature in March 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 March. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Swans Island38.3°F34.5°F43°F
Marshall Island38.5°F34.3°F43.2°F
Seawall38.1°F34.9°F42.8°F
Islesford38.3°F35.4°F42.8°F
Union River Bay37°F32.4°F42.4°F
Southwest Harbor37.9°F34.3°F42.8°F
Seal Harbor Beach37.9°F34.9°F42.8°F
Ellsworth36.9°F32°F42.4°F
Sand Beach37.9°F34.5°F42.8°F
Deer Isle37°F33.4°F42.4°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 Frenchboro 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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