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Sea Temperature in Marietta in September

Complete information on the sea temperature range in the Salish Sea in Marietta in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Marietta. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Marietta in September

8°C

MINIMUN

11.5°C

AVERAGE

15°C

MAXIMUM

Historical Data of Water Temperature in September in Marietta

Water Temperature Chart for Salish Sea in Marietta in September

Sea Temperature Table in Marietta in September Over the Past Years

Day202420232022Average
Sep 114°C13°C12°C13.0°C
Sep 214°C12°C12°C12.8°C
Sep 313°C13°C13°C12.8°C
Sep 413°C13°C13°C12.8°C
Sep 513°C13°C13°C13.0°C
Sep 614°C13°C13°C13.3°C
Sep 714°C13°C13°C13.3°C
Sep 813°C13°C13°C13.3°C
Sep 913°C13°C13°C12.8°C
Sep 1012°C13°C13°C12.5°C
Sep 1112°C13°C13°C12.5°C
Sep 1213°C14°C13°C13.3°C
Sep 1313°C14°C13°C13.0°C
Sep 1413°C13°C13°C12.8°C
Sep 1512°C13°C13°C12.5°C
Sep 1613°C13°C13°C12.8°C
Sep 1712°C12°C13°C12.0°C
Sep 1812°C12°C13°C12.0°C
Sep 1913°C12°C12°C12.0°C
Sep 2013°C12°C12°C12.0°C
Sep 2112°C12°C12°C11.5°C
Sep 2212°C13°C12°C12.0°C
Sep 2312°C13°C12°C12.0°C
Sep 2413°C12°C12°C12.0°C
Sep 2512°C12°C12°C11.8°C
Sep 2613°C13°C12°C12.3°C
Sep 2712°C12°C12°C11.8°C
Sep 2812°C12°C13°C12.0°C
Sep 2912°C12°C13°C11.8°C
Washington, United StatesWashington, United StatesWashington, United States

Marietta Climate and Swimming Opportunities in September

19°C

Average Day Air Temperature

11°C

Average Night Air Temperature

70 mm

Precipitation Amount per Month

10 days

Number of Rainy Days

12 hrs

Daylight
per Day

6 hrs

Sunshine
per Day

9 km/h

Average Wind Speed

80%

Average
humidity

Marietta lies within the Washington in United States. The average daytime temperature in Marietta in September is 66°F (19°C), while the nighttime average is 51°F (11°C). There are typically 10 rainy days during the month, with a total precipitation of 2.8 inches (70 mm). The daylight duration in September in Marietta is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 6 mph (9 km/h), and the humidity level is around 80%.

The water temperature in Marietta in September ranges from 52°F to 55°F (11°C to 13°C). At the beginning of the month, the average temperature is around 55°F (13°C), shifting to 55°F (13°C) by mid-September and reaching 54°F (12°C) in the last ten days. Overall, the average sea temperature in Marietta for September is 54°F (12°C). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Frequently Asked Questions About Water Temperatures in September in Marietta

What is the sea temperature in Marietta in September?

The water temperature in the Salish Sea in Marietta in September ranges from 52°F to 55°F (11°C to 13°C).

Is it possible to swim in the Salish Sea in Marietta in September?

The average sea temperature in Marietta in September is 54°F (12°C), and the air temperature is 66°F (19°C), so ideal conditions for a refreshing swim, though some may still find it a bit cool.