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Sea Temperature in Seattle in March
Complete information on the sea temperature range in the Salish Sea in Seattle in March. Historical daily data. Climate details for March. 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 March
6°C
MINIMUN
8.5°C
AVERAGE
11°C
MAXIMUM
Historical Data of Water Temperature in March in Seattle
Water Temperature Chart for Salish Sea in Seattle in March
Sea Temperature Table in Seattle in March Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Mar 1 | 9°C | 8°C | 7°C | 7.8°C |
| Mar 2 | 9°C | 8°C | 8°C | 8.3°C |
| Mar 3 | 8°C | 9°C | 7°C | 8.0°C |
| Mar 4 | 8°C | 9°C | 11°C | 9.0°C |
| Mar 5 | 8°C | 9°C | 9°C | 8.5°C |
| Mar 6 | 8°C | 9°C | 7°C | 8.3°C |
| Mar 7 | 8°C | 9°C | 10°C | 8.8°C |
| Mar 8 | 8°C | 9°C | 9°C | 8.5°C |
| Mar 9 | 9°C | 8°C | 9°C | 8.5°C |
| Mar 10 | 9°C | 8°C | 11°C | 9.3°C |
| Mar 11 | 9°C | 9°C | 8°C | 8.8°C |
| Mar 12 | 9°C | 9°C | 10°C | 9.0°C |
| Mar 13 | 9°C | 8°C | 10°C | 8.8°C |
| Mar 14 | 9°C | 8°C | 11°C | 9.3°C |
| Mar 15 | 9°C | 8°C | 7°C | 8.3°C |
| Mar 16 | 9°C | 8°C | 7°C | 8.3°C |
| Mar 17 | 9°C | 8°C | 9°C | 8.8°C |
| Mar 18 | 8°C | 8°C | 8°C | 8.0°C |
| Mar 19 | 8°C | 9°C | 10°C | 8.8°C |
| Mar 20 | 9°C | 9°C | 7°C | 8.5°C |
| Mar 21 | 8°C | 9°C | 9°C | 8.5°C |
| Mar 22 | 8°C | 9°C | 9°C | 8.8°C |
| Mar 23 | 9°C | 9°C | 8°C | 8.5°C |
| Mar 24 | 9°C | 9°C | 7°C | 8.5°C |
| Mar 25 | 9°C | 9°C | 10°C | 9.3°C |
| Mar 26 | 9°C | 9°C | 9°C | 9.3°C |
| Mar 27 | 9°C | 9°C | 8°C | 8.8°C |
| Mar 28 | 9°C | 9°C | 8°C | 9.0°C |
| Mar 29 | 8°C | 9°C | 7°C | 8.5°C |
| Mar 30 | 8°C | 9°C | 9°C | 9.0°C |
Seattle Climate and Swimming Opportunities in March
12°C
Average Day Air Temperature
4°C
Average Night Air Temperature
105 mm
Precipitation Amount per Month
17 days
Number of Rainy Days
12 hrs
Daylight
per Day
5 hrs
Sunshine
per Day
13 km/h
Average Wind Speed
75%
Average
humidity
Seattle lies within the Washington in United States. The average daytime temperature in Seattle in March is 54°F (12°C), while the nighttime average is 38°F (4°C). There are typically 17 rainy days during the month, with a total precipitation of 4.1 inches (105 mm). The daylight duration in March in Seattle is 12 hours, with an average of 5 hours of sunshine per day. The average wind speed in March is 8 mph (13 km/h), and the humidity level is around 75%.
The water temperature in Seattle in March ranges from 46°F to 48°F (8°C to 9°C). At the beginning of the month, the average temperature is around 48°F (9°C), shifting to 48°F (9°C) by mid-March and reaching 48°F (9°C) in the last ten days. Overall, the average sea temperature in Seattle for March is 48°F (9°C). The water is frigid, but with warmer air, it might be tolerable for a quick swim. Wetsuits are recommended.
Sea Temperature in March in Nearby Cities
Frequently Asked Questions About Water Temperatures in March in Seattle
What is the sea temperature in Seattle in March?
The water temperature in the Salish Sea in Seattle in March ranges from 46°F to 48°F (8°C to 9°C).
Is it possible to swim in the Salish Sea in Seattle in March?
The average sea temperature in Seattle in March is 48°F (9°C), and the air temperature is 54°F (12°C), so the water is frigid, but with warmer air, it might be tolerable for a quick swim. Wetsuits are recommended.