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Sea Temperature in Seattle in August
Complete information on the sea temperature range in the Salish Sea in Seattle in August. Historical daily data. Climate details for August. Tips on swimming conditions and beach relaxation in Seattle. 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 Seattle in August
10°C
MINIMUN
12.5°C
AVERAGE
15°C
MAXIMUM
Historical Data of Water Temperature in August in Seattle
Water Temperature Chart for Salish Sea in Seattle in August
Sea Temperature Table in Seattle in August Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Aug 1 | 13°C | 13°C | 12°C | 12.5°C |
| Aug 2 | 13°C | 13°C | 12°C | 12.5°C |
| Aug 3 | 13°C | 13°C | 13°C | 12.8°C |
| Aug 4 | 13°C | 13°C | 15°C | 13.3°C |
| Aug 5 | 13°C | 14°C | 15°C | 13.5°C |
| Aug 6 | 13°C | 13°C | 11°C | 12.0°C |
| Aug 7 | 13°C | 14°C | 13°C | 13.0°C |
| Aug 8 | 13°C | 14°C | 11°C | 12.8°C |
| Aug 9 | 12°C | 14°C | 11°C | 12.3°C |
| Aug 10 | 13°C | 14°C | 14°C | 13.0°C |
| Aug 11 | 13°C | 13°C | 15°C | 13.3°C |
| Aug 12 | 13°C | 13°C | 12°C | 12.5°C |
| Aug 13 | 13°C | 13°C | 11°C | 12.3°C |
| Aug 14 | 13°C | 14°C | 15°C | 13.5°C |
| Aug 15 | 13°C | 14°C | 12°C | 12.5°C |
| Aug 16 | 14°C | 13°C | 13°C | 12.8°C |
| Aug 17 | 13°C | 13°C | 13°C | 12.8°C |
| Aug 18 | 13°C | 14°C | 15°C | 13.5°C |
| Aug 19 | 13°C | 14°C | 12°C | 12.5°C |
| Aug 20 | 12°C | 14°C | 13°C | 12.5°C |
| Aug 21 | 13°C | 14°C | 12°C | 12.8°C |
| Aug 22 | 13°C | 14°C | 11°C | 12.5°C |
| Aug 23 | 13°C | 14°C | 14°C | 13.3°C |
| Aug 24 | 13°C | 14°C | 14°C | 13.3°C |
| Aug 25 | 13°C | 13°C | 11°C | 12.0°C |
| Aug 26 | 12°C | 14°C | 11°C | 12.3°C |
| Aug 27 | 12°C | 14°C | 14°C | 13.0°C |
| Aug 28 | 12°C | 13°C | 13°C | 12.8°C |
| Aug 29 | 13°C | 14°C | 13°C | 13.3°C |
| Aug 30 | 13°C | 13°C | 12°C | 12.8°C |
Seattle Climate and Swimming Opportunities in August
25°C
Average Day Air Temperature
13°C
Average Night Air Temperature
25 mm
Precipitation Amount per Month
5 days
Number of Rainy Days
14 hrs
Daylight
per Day
9 hrs
Sunshine
per Day
11 km/h
Average Wind Speed
69%
Average
humidity
Seattle lies within the Washington in United States. The average daytime temperature in Seattle in August is 77°F (25°C), while the nighttime average is 55°F (13°C). There are typically five rainy days during the month, with a total precipitation of 1.0 inches (25 mm). The daylight duration in August in Seattle is 14 hours, with an average of 9 hours of sunshine per day. The average wind speed in August is 7 mph (11 km/h), and the humidity level is around 69%.
The water temperature in Seattle in August ranges from 54°F to 55°F (12°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-August and reaching 55°F (13°C) in the last ten days. Overall, the average sea temperature in Seattle for August is 55°F (13°C). The contrast between cool water and warm air makes for a refreshing swim. A great choice for those who enjoy invigorating dips.
Sea Temperature in August in Nearby Cities
Frequently Asked Questions About Water Temperatures in August in Seattle
What is the sea temperature in Seattle in August?
The water temperature in the Salish Sea in Seattle in August ranges from 54°F to 55°F (12°C to 13°C).
Is it possible to swim in the Salish Sea in Seattle in August?
The average sea temperature in Seattle in August is 55°F (13°C), and the air temperature is 77°F (25°C), so the contrast between cool water and warm air makes for a refreshing swim. A great choice for those who enjoy invigorating dips.