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 12.06°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.

53.7

°F

May 19, 23:40

Trend:

stable

Yesterday:

53.7°F

Tomorrow:

53.7°F

Sunrise:

05:26

Sunset:

20:46

Day Length:

15 h. 20 min.

Seattle in May

Minimum:

45.3°F

Average:

47.2°F

Maximum:

48.5°F

Sea water temperature in Seattle today

As of now, in Seattle, the water temperature is 53.7°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 stay about the same.

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 57.0°F on 2023, while the historical minimum was 49.6°F on 2022.

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 minimum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 54.3°F, with minimum temperature starting at 53.7°F, while the maximum might reach 54.8°F.

Daily water temperature in Seattle

Date	Current Year actual* / forecast**	last year	10 years average
May 5	51.5°F	50.5°F	51.7°F
May 6	51.4°F	50.9°F	51.9°F
May 7	51.3°F	50.4°F	51.9°F
May 8	51.3°F	50.5°F	51.9°F
May 9	50.8°F	50.7°F	52.1°F
May 10	51.1°F	51.2°F	52.1°F
May 11	51.4°F	51.5°F	52.4°F
May 12	51.7°F	52.0°F	52.6°F
May 13	51.8°F	52.7°F	52.8°F
May 14	52.2°F	54.5°F	53.2°F
May 15	53.1°F	54.0°F	53.2°F
May 16	53.6°F	56.0°F	53.3°F
May 17	54.1°F	56.4°F	53.3°F
May 18	53.7°F	57.7°F	53.4°F
May 19	53.7°F	57.0°F	53.2°F
May 20	53.7°F	55.5°F	53.2°F
May 21	54.1°F	55.3°F	53.6°F
May 22	54.4°F	55.2°F	53.9°F
May 23	54.5°F	55.3°F	54.0°F
May 24	54.7°F	55.1°F	54.2°F
May 25	54.8°F	55.1°F	54.3°F
May 26	54.2°F	54.2°F	53.7°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 February 5, 2014, dipping to 44.4°F. The average readings by season are 47.6°F in Winter, 49.6°F in Spring, 57.1°F in Summer, and 54.3°F in Autumn.