What is the current water temperature in Seattle?

Q: What is the current water temperature in Seattle?

As of now, in Seattle, the water temperature is 15.02°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

United States > Seattle

Water temperature in Seattle

Detailed information about the current water temperature in Seattle. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

59.0

°F

July 30, 08:23

Trend:

increasing

Yesterday:

58.8°F

Tomorrow:

59.7°F

Sunrise:

05:44

Sunset:

20:47

Day Length:

15 h. 3 min.

Seattle in August

Minimum:

45.7°F

Average:

47.5°F

Maximum:

48.9°F

Sea water temperature in Seattle today

As of now, in Seattle, the water temperature is 59.0°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 1.4°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 59.4°F on 2018, while the historical minimum was 55.4°F on 2021.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 59.7°F, with minimum temperature starting at 59.5°F, while the maximum might reach 60.0°F.

Daily water temperature in Seattle

Date	Current Year actual* / forecast**	last year	10 years average
Jul 16	57.1°F	57.4°F	58.1°F
Jul 17	57.5°F	57.5°F	58.3°F
Jul 18	57.1°F	57.7°F	57.9°F
Jul 19	56.1°F	59.0°F	58.1°F
Jul 20	57.2°F	59.2°F	58.2°F
Jul 21	56.7°F	57.8°F	58.2°F
Jul 22	57.8°F	57.3°F	58.2°F
Jul 23	57.5°F	58.5°F	58.3°F
Jul 24	60.4°F	58.2°F	58.3°F
Jul 25	59.0°F	58.2°F	58.3°F
Jul 26	59.0°F	59.5°F	58.5°F
Jul 27	58.6°F	57.1°F	58.1°F
Jul 28	58.7°F	56.4°F	58.0°F
Jul 29	58.8°F	57.3°F	57.8°F
Jul 30	59.0°F	58.0°F	57.7°F
Jul 31	59.7°F	58.6°F	58.4°F
Aug 1	59.7°F	58.2°F	58.3°F
Aug 2	60.0°F	58.7°F	58.7°F
Aug 3	59.8°F	58.2°F	58.4°F
Aug 4	59.9°F	57.6°F	58.6°F
Aug 5	59.6°F	57.4°F	58.2°F
Aug 6	59.5°F	57.8°F	58.2°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Seattle by month

In an average year, Seattle offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Seattle was recorded on July 6, 2021, reaching a 63.4°F. While the coldest temperature occurred on January 29, 2022, dipping to 44.4°F. The average readings by season are 47.9°F in Winter, 49.6°F in Spring, 57.0°F in Summer, and 54.4°F in Autumn.