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 14.78°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.

58.6

°F

July 27, 07:39

Trend:

decreasing

Yesterday:

59.0°F

Tomorrow:

58.4°F

Sunrise:

05:40

Sunset:

20:51

Day Length:

15 h. 11 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 58.6°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 0.5°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall 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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 60.5°F on 2022, while the historical minimum was 56.7°F on 2024.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 58.7°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Seattle

Date	Current Year actual* / forecast**	last year	10 years average
Jul 13	57.1°F	57.5°F	57.5°F
Jul 14	57.5°F	58.2°F	57.9°F
Jul 15	57.4°F	58.9°F	57.7°F
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	58.4°F	56.4°F	57.9°F
Jul 29	58.2°F	57.3°F	57.7°F
Jul 30	58.2°F	58.0°F	57.7°F
Jul 31	58.9°F	58.6°F	58.4°F
Aug 1	58.9°F	58.2°F	58.3°F
Aug 2	59.2°F	58.7°F	58.7°F
Aug 3	58.9°F	58.2°F	58.4°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.