World sea water temperatures

Water temperature in Suquamish (WA) in September

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Is it warm enough to swim in Suquamish in September? Average water temperature in Suquamish in September is 56.1°F and therefore is not suitable for comfortable swimming. The warmest sea in Suquamish in September is 60.8°F, and the coldest is 51.6°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Suquamish

Changes water temperature in Suquamish in September 2025, 2024

To get an accurate forecast for the water temperature in Suquamish for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Suquamish, 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 160.8°F58.8°F54.9°F60.8°F
September 260.3°F58.5°F54.5°F60.3°F
September 360.3°F58.8°F54.5°F60.3°F
September 460.6°F58.1°F54.1°F60.6°F
September 560.1°F57.9°F54°F60.1°F
September 659°F59.4°F54°F59.4°F
September 758.1°F59.4°F53.6°F59.5°F
September 858.5°F58.8°F53.6°F59.2°F
September 958.6°F59.5°F53.2°F59.5°F
September 1057.7°F58.6°F53.2°F58.8°F
September 1157.6°F57.9°F53.2°F59°F
September 1257.7°F57.4°F53.4°F58.8°F
September 1357.4°F57.4°F53.4°F59°F
September 1457.2°F57°F53.6°F58.6°F
September 1558.1°F55.4°F53.6°F58.1°F
Day 2025 2024 Min Max
September 1657.2°F56.1°F53.6°F57.6°F
September 1758.3°F56.3°F53.6°F58.3°F
September 1857.9°F57°F53.4°F57.9°F
September 1957°F55.6°F52.9°F57°F
September 2056.7°F55.6°F52.7°F56.8°F
September 2156.7°F56.3°F52.9°F57.4°F
September 2256.1°F55.9°F52.9°F57°F
September 2356.5°F55.8°F52.9°F57°F
September 2455.9°F57.2°F52.9°F57.2°F
September 2555.6°F57°F53.1°F57°F
September 26 54.9°F53.1°F57°F
September 27 55.2°F53.1°F57°F
September 28 55.9°F52.5°F57.9°F
September 29 55.2°F52.3°F57.7°F
September 30 55°F51.6°F57°F
Suquamish water temp chart in September

Average water temperature in Suquamish in September over a decade

20152016201720182019
56.8°F56.3°F57°F56.3°F57.4°F
20202021202220232024
57.2°F56.7°F57.2°F56.8°F57°F

Suquamish sea state in September

Chart comparing the height of waves in Suquamish 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 Suquamish in September

Suquamish 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
Indianola56.1°F51.6°F60.6°F
Kingston55.9°F51.6°F60.4°F
Edmonds55.9°F51.6°F60.3°F
Shoreline56.1°F51.6°F60.4°F
Golden Gardens56.1°F51.6°F60.6°F
Enetai56.3°F52°F61.5°F
Seattle55.9°F51.4°F60.4°F
Whidbey Island55.9°F51.4°F60.4°F
Tracyton56.3°F52°F62.1°F
Quilcene56.7°F51.4°F66.4°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 Suquamish 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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