Water Temperature of Humboldt Bay in Eureka, CA

Current Water Temperature

51.1°F

Measurement Time: Wednesday, June 25, 2025, 2:42 AM PDT

Today's Tides

 Low: June 25, 6:32 AM, -2.09 ft
High: June 25, 1:32 PM, 5.47 ft
 Low: June 25, 6:06 PM, 3.02 ft

Temperature Locations

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Local Points of Interest

Samoa Dunes Recreational Area; Mike Thompson Wildlife Area; South Bay; Rosewood, CA; Elk River, CA

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Humboldt Bay

Station Name: North Spit
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 0 feet / 0 meters

Sensor Depth: -3.8 feet / -1.2 meters

Nearest Address:
New Navy Base Rd
Eureka, CA 95521
Humboldt County

GPS Coordinates: 40.76630, -124.21720

Nearby Water Temperatures

Pacific Ocean, Manila, CA (11.6 mi)
Pacific Ocean, Eureka, CA (16.3 mi)
Trinity River, Hoopa, CA (34.5 mi)
Pacific Ocean, Petrolia, CA (42.3 mi)
Klamath River, Orleans, CA (51.4 mi)
Klamath River, Klamath, CA (52.9 mi)
Trinity River, Helena, CA (57.7 mi)
Trinity River, Douglas City, CA (66.5 mi)
Crescent Harbor, Crescent City, CA (67.7 mi)
Trinity River, Lewiston, CA (74.2 mi)
Elder Creek, Branscomb, CA (77.7 mi)
East Fork Russian River, Ukiah, CA (119.7 mi)
Mill Creek, Los Milinos, CA (125.4 mi)
Deer Creek, Vina, CA (130.2 mi)
Arena Cove, Point Arena, CA (130.7 mi)

Weather for Eureka, California

Current Weather

55°F
Overcast
Conditions: Overcast
Humidity: 86%
Feels Like: 54.5°F
Wind: NNE 4.3 mph
Wind Gusts: 7.4 mph
Pressure: 30.07 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Overcast
Wed
H: 56°F
L: 50°F
Cloudy
Thu
H: 56°F
L: 52°F
Cloudy
Fri
H: 56°F
L: 50°F
Sunny
Sat
H: 61°F
L: 51°F
Sunny
Sun
H: 64°F
L: 52°F

Air Quality

PM2.5: 20.91 μg/m3
PM10: 27.38 μg/m3
Carbon Monoxide: 233.1 μg/m3
Nitrogen Dioxide: 6.11 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 58 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:19 PM
Sunset: 8:53 PM
Daylight: 15 hrs 6 mins
Moonrise: 5:36 AM
Moon Transit: 1:46 PM
Moonset: 9:51 PM
Moon Phase: New
Moon Illumination: 1.6%

Best Times for Fishing or Hunting

Major Periods

9:02 PM - 11:32 PM
1:16 PM - 3:46 PM

Minor Periods

9:21 PM - 10:51 PM
5:06 AM - 6:36 AM

Action Rating: 5 out of 5

Coastal Flood Advisory issued June 24 at 10:35PM PDT until June 25 at 1:00AM PDT by NWS Eureka CA

Effective: Tue June 24, 2025, 10:35 PM
Expires: Wed June 25, 2025, 1:00 AM

* WHAT...High astronomical tides will cause minor flooding in low lying areas around Humboldt Bay. Up to one quarter foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.6 and 8.9 feet MLLW at the North Spit tide gauge is predicted. * WHERE...Northern Humboldt Coast County. * WHEN...From 9 PM this evening to 1 AM PDT Wednesday. High tide is at 11:06 PM at the Humboldt Bay North Spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Flooding of low lying areas around Humboldt Bay including parks and roads with only isolated closures expected. Flooding could impact Jackson Ranch Road in the Arcata Bottoms and several roads in King Salmon.

A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT.
Wednesday, June 25, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 54.4°F
Average Humidity: 96%
Chance of Rain: 0%
Wind: 9.8 mph
UV Index: 2.4

Air Quality

AQI: 2 - Moderate
PM2.5: 22.44 μg/m3
PM10: 29.42 μg/m3
Carbon Monoxide: 210.01 μg/m3
Nitrogen Dioxide: 7.92 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 60.96 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:19 PM
Sunset: 8:53 PM
Daylight: 15 hrs 6 mins
Moonrise: 5:36 AM
Moon Transit: 1:46 PM
Moonset: 9:51 PM
Moon Phase: New
Moon Illumination: 1.6%

Best Times for Fishing or Hunting

Major Periods

9:02 PM - 11:32 PM
1:16 PM - 3:46 PM

Minor Periods

9:21 PM - 10:51 PM
5:06 AM - 6:36 AM

Action Rating: 5 out of 5

Thursday, June 26, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 53.5°F
Average Humidity: 95%
Chance of Rain: 0%
Wind: 11.6 mph
UV Index: 2.5

Air Quality

AQI: 1 - Good
PM2.5: 13.58 μg/m3
PM10: 19.77 μg/m3
Carbon Monoxide: 192.47 μg/m3
Nitrogen Dioxide: 5.96 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 44.12 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:19 PM
Sunset: 8:53 PM
Daylight: 15 hrs 5 mins
Moonrise: 6:49 AM
Moon Transit: 2:47 PM
Moonset: 10:36 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:17 PM - 4:47 PM

Minor Periods

10:06 PM - 11:36 PM
6:19 AM - 7:49 AM

Action Rating: 3 out of 5

Friday, June 27, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 52.9°F
Average Humidity: 95%
Chance of Rain: 0%
Wind: 11.4 mph
UV Index: 2.5

Air Quality

AQI: 1 - Good
PM2.5: 12.73 μg/m3
PM10: 18.38 μg/m3
Carbon Monoxide: 206.02 μg/m3
Nitrogen Dioxide: 3.97 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 48.6 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:20 PM
Sunset: 8:53 PM
Daylight: 15 hrs 5 mins
Moonrise: 8:04 AM
Moon Transit: 3:43 PM
Moonset: 11:10 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:13 PM - 5:43 PM

Minor Periods

12:00 AM - 12:00 AM
7:34 AM - 9:04 AM

Action Rating: 3 out of 5

Saturday, June 28, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 55.7°F
Average Humidity: 82%
Chance of Rain: 0%
Wind: 8.5 mph
UV Index: 2.5

Air Quality

AQI: 1 - Good
PM2.5: 12.35 μg/m3
PM10: 17.87 μg/m3
Carbon Monoxide: 238.22 μg/m3
Nitrogen Dioxide: 6.96 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 55.77 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:20 PM
Sunset: 8:53 PM
Daylight: 15 hrs 5 mins
Moonrise: 9:17 AM
Moon Transit: 4:33 PM
Moonset: 12:10 AM
Moon Phase: Waxing Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:03 PM - 6:33 PM

Minor Periods

8:47 AM - 10:17 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, June 29, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 56.2°F
Average Humidity: 83%
Chance of Rain: 0%
Wind: 6.7 mph
UV Index: 0

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:20 PM
Sunset: 8:52 PM
Daylight: 15 hrs 4 mins
Moonrise: 10:26 AM
Moon Transit: 5:19 PM
Moonset: 12:37 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:49 PM - 7:19 PM

Minor Periods

9:56 AM - 11:26 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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