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Water temperature in Bainbridge Island (WA) in September

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Is it warm enough to swim in Bainbridge Island in September? Average water temperature in Bainbridge Island in September is 56.1°F and therefore is not suitable for comfortable swimming. The warmest sea in Bainbridge Island in September is 60.8°F, and the coldest is 51.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Bainbridge Island

Changes water temperature in Bainbridge Island in September 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
September 160.3°F59.7°F54.7°F60.8°F
September 259.2°F59.2°F54.3°F60.1°F
September 359.5°F59.4°F54.5°F59.5°F
September 459.5°F58.1°F54.5°F59.5°F
September 5 57.7°F54.1°F58.8°F
September 6 58.8°F54.3°F59.5°F
September 7 59.2°F54°F59.9°F
September 8 59.5°F54°F59.5°F
September 9 59.4°F53.6°F59.4°F
September 10 58.1°F53.4°F58.6°F
September 11 57°F53.4°F58.8°F
September 12 57.4°F53.4°F58.6°F
September 13 56.8°F53.4°F59.2°F
September 14 56.7°F53.8°F58.8°F
September 15 55.6°F53.8°F58.1°F
Day 2025 2024 Min Max
September 16 56.5°F53.6°F57.7°F
September 17 55.9°F53.8°F57.4°F
September 18 56.7°F53.6°F57.2°F
September 19 55.6°F53.2°F57.2°F
September 20 55.8°F53.1°F57°F
September 21 56.5°F53.1°F57.4°F
September 22 56.5°F53.2°F57.2°F
September 23 56.8°F53.2°F57.7°F
September 24 57.4°F53.2°F57.4°F
September 25 57.2°F53.4°F57.2°F
September 26 54.5°F53.2°F57°F
September 27 55.2°F53.4°F57.2°F
September 28 56.1°F52.9°F59.2°F
September 29 55.2°F52.7°F58.3°F
September 30 55.6°F51.8°F57.2°F
Bainbridge Island water temp chart in September

Average water temperature in Bainbridge Island in September over a decade

20152016201720182019
56.8°F56.3°F57.2°F56.5°F57.4°F
20202021202220232024
57°F56.5°F57.2°F56.8°F57.2°F

Bainbridge Island sea state in September

Chart comparing the height of waves in Bainbridge Island in September 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 Bainbridge Island in September

Bainbridge Island 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 September?

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

AvrMinMax
Golden Gardens56.1°F51.6°F60.6°F
Indianola56.1°F51.6°F60.6°F
Shoreline56.1°F51.6°F60.4°F
Enetai56.3°F52°F61.5°F
Suquamish56.1°F51.6°F60.8°F
Kingston55.9°F51.6°F60.4°F
Manchester56.1°F52°F60.8°F
Poulsbo56.5°F51.8°F62.8°F
Rocky Point56.3°F52°F62.1°F
Silverdale56.3°F52°F62.1°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 Bainbridge Island 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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