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Water temperature in Union River Bay (ME) in August

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Is it warm enough to swim in Union River Bay in August? Average water temperature in Union River Bay in August is 58.8°F and therefore is not suitable for comfortable swimming. The warmest sea in Union River Bay in August is 66.4°F, and the coldest is 53.6°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Union River Bay

Changes water temperature in Union River Bay in August 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
August 160.8°F59.4°F55.2°F62.4°F
August 259.5°F58.6°F55.6°F63.7°F
August 359.7°F57.4°F54.7°F62.4°F
August 458.1°F59°F54.1°F62.6°F
August 558.3°F60.4°F54.5°F63.9°F
August 658.3°F59.9°F54.9°F64.2°F
August 758.3°F60.6°F54.3°F63.9°F
August 857.4°F58.3°F54.1°F64.6°F
August 959.2°F58.5°F53.6°F62.2°F
August 1058.6°F59°F54.1°F63.7°F
August 1159.9°F57.4°F54.7°F65.1°F
August 1259.5°F59.4°F55.4°F64.6°F
August 1360.8°F60.8°F55.2°F66.4°F
August 1460.6°F60.4°F55.2°F66.2°F
August 1559.2°F61.3°F56.1°F65.5°F
Day 2025 2024 Min Max
August 1659.9°F60.4°F54.5°F64.4°F
August 1759.4°F59.7°F55.2°F64.2°F
August 1858.3°F59.5°F55°F63.7°F
August 1957.9°F59°F54.3°F63.5°F
August 2058.6°F63.3°F54.3°F63.3°F
August 2157.4°F59.9°F54.9°F63.9°F
August 2257.7°F57.4°F55.2°F65.1°F
August 2358.3°F58.8°F55.4°F64.4°F
August 2457.9°F58.6°F54.7°F64.2°F
August 2557.9°F57.7°F55.9°F64°F
August 2658.3°F59.2°F55.4°F63.1°F
August 2758.5°F58.1°F55.9°F63.3°F
August 2858.5°F59.2°F55.9°F62.8°F
August 2958.1°F59.4°F55.8°F61.9°F
August 3059°F59.4°F55.9°F62.1°F
August 3159.5°F58.5°F55.6°F61.7°F
Union River Bay water temp chart in August

Average water temperature in Union River Bay in August over a decade

20162017201820192020
58.8°F56.8°F59°F58.8°F61.9°F
20212022202320242025
62.1°F61.9°F59.7°F59.4°F58.8°F

Union River Bay sea state in August

Chart comparing the height of waves in Union River Bay in August 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 Union River Bay in August

Union River Bay 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 August?

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

AvrMinMax
Marshall Island58.3°F54.5°F65.5°F
Bar Harbor57.9°F52.9°F67.1°F
Hancock58.5°F53.2°F68.5°F
Castine61.7°F55.9°F70°F
Franklin58.5°F53.1°F68.5°F
Sullivan58.5°F53.1°F68.5°F
Stockton Springs61.7°F55.9°F69.8°F
Bayside61.9°F55.9°F70.7°F
Vinalhaven59.7°F55.9°F65.5°F
Bucksport61.5°F55.9°F69.6°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 Union River Bay 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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