Water temperature in Seattle
51.2
°F
May 20, 20:44
Trend:
stableYesterday:
52.3°FTomorrow:
51.5°F
Sunrise:
Sunset:
Day Length:
15 h. 20 min.Seattle in May
Minimum:
46.0°FAverage:
47.4°FMaximum:
48.5°FSea water temperature in Seattle today
As of now, in Seattle, the water temperature is 51.2°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 lower 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 rise a bit.Recent sea temperature and forecast
Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 55.5°F on 2023, while the historical minimum was 49.8°F on 2022.
Daily water temperature in Seattle
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| May 6 | 51.1°F | 51.4°F | 51.8°F |
| May 7 | 52.1°F | 51.3°F | 51.9°F |
| May 8 | 52.2°F | 51.3°F | 52.0°F |
| May 9 | 52.4°F | 50.8°F | 52.1°F |
| May 10 | 52.5°F | 51.1°F | 52.2°F |
| May 11 | 52.7°F | 51.4°F | 52.4°F |
| May 12 | 53.1°F | 51.8°F | 52.8°F |
| May 13 | 53.4°F | 51.9°F | 53.0°F |
| May 14 | 52.9°F | 52.2°F | 53.2°F |
| May 15 | 52.6°F | 53.1°F | 53.2°F |
| May 16 | 52.5°F | 53.6°F | 53.2°F |
| May 17 | 52.4°F | 54.1°F | 53.3°F |
| May 18 | 52.3°F | 53.7°F | 53.3°F |
| May 19 | 52.3°F | 53.7°F | 53.3°F |
| May 20 | 51.2°F | 53.3°F | 53.3°F |
| May 21 | 51.5°F | 53.7°F | 53.7°F |
| May 22 | 51.9°F | 54.4°F | 54.0°F |
| May 23 | 51.9°F | 54.4°F | 54.0°F |
| May 24 | 52.0°F | 54.2°F | 54.2°F |
| May 25 | 52.1°F | 54.2°F | 54.2°F |
| May 26 | 51.5°F | 51.8°F | 53.6°F |
| May 27 | 51.3°F | 52.0°F | 53.5°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.