World sea water temperatures

Water temperature in Astoria (OR) in September

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Is it warm enough to swim in Astoria in September? Average water temperature in Astoria in September is 59.7°F and therefore is not suitable for comfortable swimming. The warmest sea in Astoria in September is 68.7°F, and the coldest is 54.7°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Astoria

Changes water temperature in Astoria in September 2025, 2024

To get an accurate forecast for the water temperature in Astoria for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Astoria, 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 163.5°F63.5°F55.9°F66.9°F
September 263.7°F63.1°F55.9°F66.9°F
September 362.6°F63.3°F56.1°F67.3°F
September 461.5°F64°F55.8°F68.7°F
September 5 67.1°F55.8°F67.8°F
September 6 66.4°F55.4°F66.4°F
September 7 64.8°F55.8°F65.7°F
September 8 62.4°F55.9°F67.1°F
September 9 63.7°F55.6°F66.6°F
September 10 64.9°F55.2°F66°F
September 11 65.8°F55°F65.8°F
September 12 64°F54.9°F65.7°F
September 13 64.4°F55.4°F64.9°F
September 14 63.3°F55.4°F65.3°F
September 15 61.9°F55.2°F65.5°F
Day 2025 2024 Min Max
September 16 61.7°F55°F67.3°F
September 17 61°F55°F66°F
September 18 60.4°F54.7°F66.4°F
September 19 60.6°F55.8°F67.1°F
September 20 62.1°F55.9°F65.7°F
September 21 63°F55.8°F64.8°F
September 22 62.4°F55.8°F64°F
September 23 61.3°F56.5°F64.8°F
September 24 62.1°F56.3°F64.4°F
September 25 62.2°F56.8°F65.3°F
September 26 59.7°F56.5°F63.9°F
September 27 61.9°F56.5°F63.7°F
September 28 61.2°F55.6°F62.8°F
September 29 60.3°F55.4°F62.4°F
September 30 60.6°F55°F62.8°F
Astoria water temp chart in September

Average water temperature in Astoria in September over a decade

20152016201720182019
57.9°F57.9°F57.4°F58.8°F65.1°F
20202021202220232024
62.1°F62.6°F61.9°F64.8°F62.8°F

Astoria sea state in September

Chart comparing the height of waves in Astoria 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 Astoria in September

Astoria 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
Chinook59.5°F54.7°F68°F
Ilwaco58.6°F53.8°F65.1°F
Long Beach58.5°F53.8°F64.2°F
Klipsan Beach58.8°F54.7°F63.7°F
Oysterville59.4°F54.7°F64.9°F
Tokeland59.2°F54.1°F65.3°F
Bruceport59.2°F54.1°F65.3°F
Short Sand Beach57.4°F48.7°F61.9°F
Manzanita57.2°F48.9°F62.2°F
Grayland57.9°F52.5°F62.8°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 Astoria 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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