World sea water temperatures

Water temperature in Eureka (CA) in January

Is it warm enough to swim in Eureka in January? Average water temperature in Eureka in January is 51.4°F and therefore is not suitable for comfortable swimming. The warmest sea in Eureka in January is 55.8°F, and the coldest is 48.2°F. Average high air temperature in Eureka in January is 56°F, and average low temperature is 41°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Eureka

Changes water temperature in Eureka in January 2025, 2024

To get an accurate forecast for the water temperature in Eureka for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Eureka, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of January.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
January 153.8°F54.9°F49.6°F55.8°F
January 253.6°F54.7°F49.6°F54.9°F
January 353.8°F54.5°F49.6°F54.7°F
January 453.6°F54.5°F49.1°F54.7°F
January 553.4°F54.3°F49.1°F55°F
January 653.2°F54.3°F49.3°F55°F
January 753.4°F54.3°F49.3°F55°F
January 853.2°F54.5°F49.6°F55.4°F
January 953.1°F54.1°F49.6°F54.9°F
January 1053.1°F54.1°F49.8°F55°F
January 1152.3°F53.6°F49.6°F55.2°F
January 1250.9°F53.8°F49.1°F55.2°F
January 1349.6°F54°F49.1°F55°F
January 1450.4°F54.1°F48.9°F54.7°F
January 1550.4°F53.8°F48.9°F54.3°F
Day 2025 2024 Min Max
January 1650.7°F54°F48.9°F54.9°F
January 1750.7°F54°F48.9°F55°F
January 1850.4°F53.8°F48.7°F55.2°F
January 1950.2°F54°F48.2°F55°F
January 2049.6°F54°F48.2°F54.7°F
January 2149.3°F54°F48.7°F54.7°F
January 2248.9°F54°F48.6°F54.7°F
January 2348.9°F53.6°F48.6°F54.1°F
January 2449.5°F53.8°F48.7°F54.7°F
January 2549.1°F53.8°F48.9°F55.2°F
January 2648.9°F53.8°F48.9°F55°F
January 2748.4°F53.8°F48.4°F55°F
January 2848.7°F54°F48.7°F54.7°F
January 2949.1°F53.8°F49.1°F54.9°F
January 3049.3°F54°F49.1°F54.7°F
January 3149.6°F54°F49.1°F54.7°F
Eureka water temp chart in January

Average water temperature in Eureka in January over a decade

20162017201820192020
53.1°F51.3°F52.7°F52.5°F51.8°F
20212022202320242025
51.3°F50.9°F51.6°F54°F50.9°F

Eureka sea state in January

Chart comparing the height of waves in Eureka in January over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Eureka in January

Weather and climate in Eureka in January

This data display average monthly climate indicators in Eureka in January based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature56°F
  • Average LOW temperature41°F
  • Average rainfall days17 days
  • Average rainfall165mm/6.5''
  • Average sunshine4.5h

Eureka water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in January?

Want to know where the water temperature in January is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Best Beach Resorts in California in January

Places with the warmest average sea water temperature in California in January. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
San Diego59°F55.9°F62.4°F
Santa Monica58.6°F54.7°F62.2°F
La Jolla Cove59°F55.4°F62.1°F
Lake Tahoe43°F40.1°F45.7°F
Los Angeles58.5°F54.5°F62.4°F
Samoa51.4°F48.2°F55.8°F
King Salmon51.4°F48.2°F55.8°F
Humboldt Beach51.4°F48.2°F55.8°F
Manila51.4°F48.2°F55.8°F
McKinleyville51.4°F48.2°F55.9°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Eureka is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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