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 10.33°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.

50.6

°F

April 14, 00:01

Trend:

stable

Yesterday:

50.6°F

Tomorrow:

50.7°F

Sunrise:

06:23

Sunset:

19:57

Day Length:

13 h. 34 min.

Seattle in April

Minimum:

45.9°F

Average:

47.3°F

Maximum:

48.7°F

Sea water temperature in Seattle today

As of now, in Seattle, the water temperature is 50.6°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 2.1°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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 51.3°F on 2016, while the historical minimum was 46.9°F on 2023.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 51.1°F, with minimum temperature starting at 50.7°F, while the maximum might reach 51.7°F.

Daily water temperature in Seattle

Date	Current Year actual* / forecast**	last year	10 years average
Mar 31	47.9°F	49.7°F	47.8°F
Apr 1	48.1°F	51.3°F	47.9°F
Apr 2	48.3°F	49.6°F	48.1°F
Apr 3	48.7°F	49.2°F	48.1°F
Apr 4	48.7°F	49.3°F	47.9°F
Apr 5	49.6°F	49.2°F	48.0°F
Apr 6	48.9°F	50.3°F	47.8°F
Apr 7	49.3°F	50.1°F	48.1°F
Apr 8	50.0°F	52.4°F	48.6°F
Apr 9	50.4°F	50.8°F	48.6°F
Apr 10	50.5°F	50.1°F	48.7°F
Apr 11	50.9°F	51.6°F	49.2°F
Apr 12	50.6°F	49.6°F	48.9°F
Apr 13	50.6°F	49.2°F	48.5°F
Apr 14	50.6°F	49.2°F	48.5°F
Apr 15	50.7°F	49.8°F	48.6°F
Apr 16	50.9°F	49.9°F	48.8°F
Apr 17	51.0°F	50.2°F	48.9°F
Apr 18	51.0°F	50.2°F	48.9°F
Apr 19	51.2°F	50.5°F	49.2°F
Apr 20	51.5°F	50.4°F	49.4°F
Apr 21	51.7°F	50.1°F	49.6°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.