What is the current water temperature in Eureka?

Q: What is the current water temperature in Eureka?

As of now, in Eureka, the water temperature is 9.54°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 > Eureka

Water temperature in Eureka

Detailed information about the current water temperature in Eureka. 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.

49.2

°F

May 20, 20:34

Trend:

decreasing

Yesterday:

50.3°F

Tomorrow:

48.9°F

Sunrise:

05:55

Sunset:

20:32

Day Length:

14 h. 37 min.

Eureka in May

Minimum:

50.4°F

Average:

52.2°F

Maximum:

54.8°F

Sea water temperature in Eureka today

As of now, in Eureka, the water temperature is 49.2°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 2.8°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is slightly 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 55.3°F on 2020, while the historical minimum was 49.9°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 minimum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 48.6°F, the minimum temperature may reach 48.4°F, and the maximum might stay at 48.9°F.

Daily water temperature in Eureka

Date	Current Year actual* / forecast**	last year	10 years average
May 6	47.8°F	51.6°F	51.1°F
May 7	48.3°F	52.1°F	51.2°F
May 8	48.2°F	51.7°F	50.9°F
May 9	48.6°F	51.4°F	50.7°F
May 10	48.8°F	49.2°F	51.0°F
May 11	49.0°F	49.4°F	51.2°F
May 12	49.2°F	49.6°F	51.3°F
May 13	49.9°F	49.3°F	51.1°F
May 14	50.5°F	49.7°F	51.4°F
May 15	50.7°F	50.3°F	51.7°F
May 16	50.4°F	50.5°F	51.8°F
May 17	50.6°F	51.8°F	52.1°F
May 18	50.8°F	51.1°F	52.0°F
May 19	50.3°F	50.6°F	51.9°F
May 20	49.2°F	50.0°F	52.0°F
May 21	48.9°F	49.0°F	51.7°F
May 22	48.6°F	48.2°F	51.4°F
May 23	48.6°F	47.9°F	51.4°F
May 24	48.4°F	47.7°F	51.2°F
May 25	48.8°F	48.8°F	51.6°F
May 26	48.6°F	49.3°F	51.4°F
May 27	48.6°F	49.5°F	51.4°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 Eureka by month

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

The warmest water in Eureka was recorded on August 12, 2022, reaching a 61.8°F. While the coldest temperature occurred on July 15, 2021, dipping to 44.7°F. The average readings by season are 52.1°F in Winter, 51.3°F in Spring, 54.0°F in Summer, and 54.2°F in Autumn.