World sea water temperatures

Water temperature in Casco Bay (ME) in July

Is it warm enough to swim in Casco Bay in July? Average water temperature in Casco Bay in July is 62.6°F and therefore is not suitable for comfortable swimming. The warmest sea in Casco Bay in July is 70.7°F, and the coldest is 54.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Casco Bay

Changes water temperature in Casco Bay in July 2025, 2024

To get an accurate forecast for the water temperature in Casco 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 Casco Bay, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of July.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
July 161.5°F57.4°F55°F61.9°F
July 261.7°F58.1°F54.1°F63.1°F
July 361.3°F58.1°F54.9°F63.5°F
July 462.1°F59.9°F55.8°F64.8°F
July 561.9°F59.5°F56.1°F64.6°F
July 662.6°F61°F56.1°F65.3°F
July 761.7°F60.3°F56.7°F65.8°F
July 861.5°F62.4°F57°F65.8°F
July 962.2°F64.4°F57.4°F66.2°F
July 1062.6°F65.8°F58.5°F65.8°F
July 1162.6°F64.2°F59°F65.3°F
July 1262.2°F62.2°F59°F65.8°F
July 1359.7°F63.3°F59.2°F65.8°F
July 1461.7°F63.9°F59.7°F66.7°F
July 1563.1°F63.7°F59.5°F66.7°F
Day 2025 2024 Min Max
July 1665.1°F65.5°F59.9°F66°F
July 1766.9°F64.4°F59.9°F66.9°F
July 1864.2°F63.7°F60.3°F66.7°F
July 1962.1°F64.2°F60.6°F67.3°F
July 2061.9°F63.5°F61.2°F66.7°F
July 2160.8°F64.4°F60.8°F66.7°F
July 2259.4°F64.4°F59.4°F67.6°F
July 2359.5°F64°F59.5°F67.5°F
July 2459.9°F64.8°F59.5°F69.3°F
July 2558.5°F63.9°F58.5°F69.3°F
July 2658.6°F63.5°F58.6°F70.7°F
July 2759.4°F64.6°F59.4°F69.8°F
July 2859.9°F63.3°F59.9°F69.3°F
July 2962.1°F63.9°F60.8°F68.9°F
July 3062.1°F64.8°F60.6°F68.2°F
July 3163.9°F63.5°F60.6°F69.3°F
Casco Bay water temp chart in July

Average water temperature in Casco Bay in July over a decade

20162017201820192020
63°F61.3°F62.8°F63.3°F65.3°F
20212022202320242025
61.7°F62.4°F65.3°F63°F61.7°F

Casco Bay sea state in July

Chart comparing the height of waves in Casco Bay in July 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 Casco Bay in July

Casco 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 July?

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

AvrMinMax
Bailey Island62.6°F54.1°F71.4°F
Peaks Island62.4°F54.1°F69.1°F
Yarmouth63°F54.3°F72°F
Portland62.6°F54.1°F68.9°F
Scarborough63°F54.3°F69.3°F
Georgetown61.7°F53.4°F71.8°F
Pine Point63.1°F54.5°F69.3°F
Boothbay Harbor61.5°F53.1°F71.4°F
North Bath62.2°F53.8°F72.9°F
Old Orchard Beach63.3°F54.7°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 Casco 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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