All data are in degrees Fahrenheit

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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.
Sea temperature in Eureka now

52.6

°F

December 21, 09:48

Trend:

stable

Yesterday:

52.6°F

Tomorrow:

52.6°F

Sunrise:

07:38

Sunset:

16:53

Day Length:

9 h. 15 min.

Eureka in December

Minimum:

50.5°F

Average:

52.1°F

Maximum:

55.1°F

Sea water temperature in Eureka today

As of now, in Eureka, the water temperature is 52.6°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 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 stay about the same.

Recent sea temperature and forecast

Today's water temperature slightly varies from the average of the past two weeks. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 58.3°F on 2014, while the historical minimum was 49.8°F on 2022.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 52.5°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Eureka

Date Current Year

actual* / forecast**

last year 10 years average
Dec 7 53.4°F 54.1°F 53.5°F
Dec 8 53.5°F 53.9°F 53.4°F
Dec 9 53.4°F 54.3°F 53.7°F
Dec 10 53.1°F 54.4°F 53.7°F
Dec 11 52.8°F 54.6°F 53.6°F
Dec 12 52.7°F 54.6°F 53.6°F
Dec 13 52.6°F 54.6°F 53.6°F
Dec 14 52.2°F 54.9°F 53.6°F
Dec 15 52.0°F 54.9°F 53.6°F
Dec 16 51.9°F 54.7°F 53.5°F
Dec 17 52.3°F 54.4°F 53.3°F
Dec 18 52.0°F 54.0°F 53.0°F
Dec 19 52.4°F 54.8°F 53.0°F
Dec 20 52.6°F 54.7°F 52.9°F
Dec 21 52.6°F 54.9°F 53.2°F
Dec 22 52.6°F 54.8°F 53.1°F
Dec 23 52.6°F 55.3°F 53.1°F
Dec 24 52.6°F 55.3°F 53.1°F
Dec 25 52.5°F 54.9°F 53.0°F
Dec 26 52.5°F 54.9°F 53.0°F
Dec 27 52.3°F 54.9°F 52.8°F
Dec 28 52.2°F 54.8°F 52.8°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 52.3°F in Winter, 51.4°F in Spring, 54.1°F in Summer, and 54.5°F in Autumn.