Water Temperature of Humboldt Bay in Eureka, CA

Current Water Temperature

50.5°F

Measurement Time: Wednesday, April 23, 2025, 12:00 AM PDT

Today's Tides

 Low: April 23, 2:39 AM, 2.50 ft
High: April 23, 8:26 AM, 5.59 ft
 Low: April 23, 3:02 PM, 0.18 ft
High: April 23, 9:44 PM, 5.78 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

45°F
Overcast
Conditions: Overcast
Humidity: 90%
Feels Like: 42°F
Wind: NNE 5.4 mph
Wind Gusts: 9.9 mph
Pressure: 29.98 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Mist
Wed
H: 51°F
L: 47°F
Mist
Thu
H: 49°F
L: 48°F
Mist
Fri
H: 50°F
L: 47°F
Patchy rain nearby
Sat
H: 50°F
L: 46°F
Partly Cloudy
Sun
H: 53°F
L: 44°F

Air Quality

PM2.5: 11.29 μg/m3
PM10: 14.8 μg/m3
Carbon Monoxide: 333 μg/m3
Nitrogen Dioxide: 7.59 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 51 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:15 PM
Sunset: 8:05 PM
Daylight: 13 hrs 40 mins
Moonrise: 4:18 AM
Moon Transit: 9:45 AM
Moonset: 3:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.0%

Best Times for Fishing or Hunting

Major Periods

4:57 PM - 7:27 PM
9:15 AM - 11:45 AM

Minor Periods

2:54 PM - 4:24 PM
3:48 AM - 5:18 AM

Action Rating: 2 out of 5

Frost Advisory issued April 22 at 7:44PM PDT until April 23 at 9:00AM PDT by NWS Eureka CA

Effective: Tue April 22, 2025, 7:44 PM
Expires: Wed April 23, 2025, 3:45 AM

* WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Trinity County. * WHEN...From 2 AM to 9 AM PDT Wednesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.
Wednesday, April 23, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 48.9°F
Average Humidity: 95%
Chance of Rain: 0%
Wind: 10.3 mph
UV Index: 1.7

Air Quality

AQI: 1 - Good
PM2.5: 13.18 μg/m3
PM10: 18.93 μg/m3
Carbon Monoxide: 312.28 μg/m3
Nitrogen Dioxide: 5.71 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 71.36 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:15 PM
Sunset: 8:05 PM
Daylight: 13 hrs 40 mins
Moonrise: 4:18 AM
Moon Transit: 9:45 AM
Moonset: 3:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.0%

Best Times for Fishing or Hunting

Major Periods

4:57 PM - 7:27 PM
9:15 AM - 11:45 AM

Minor Periods

2:54 PM - 4:24 PM
3:48 AM - 5:18 AM

Action Rating: 2 out of 5

Thursday, April 24, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 48.1°F
Average Humidity: 97%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 1

Air Quality

AQI: 2 - Moderate
PM2.5: 16.29 μg/m3
PM10: 24.31 μg/m3
Carbon Monoxide: 293.11 μg/m3
Nitrogen Dioxide: 3.89 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 85.92 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 1:14 PM
Sunset: 8:06 PM
Daylight: 13 hrs 42 mins
Moonrise: 4:43 AM
Moon Transit: 10:34 AM
Moonset: 4:39 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:04 AM - 12:34 AM

Minor Periods

4:09 PM - 5:39 PM
4:13 AM - 5:43 AM

Action Rating: 2 out of 5

Friday, April 25, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 48.1°F
Average Humidity: 95%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 11.57 μg/m3
PM10: 18.16 μg/m3
Carbon Monoxide: 283.64 μg/m3
Nitrogen Dioxide: 2.32 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 91.76 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:14 PM
Sunset: 8:08 PM
Daylight: 13 hrs 44 mins
Moonrise: 5:07 AM
Moon Transit: 12:34 AM
Moonset: 5:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:04 AM - 2:34 AM
12:04 AM - 2:34 AM

Minor Periods

5:26 PM - 6:56 PM
4:37 AM - 6:07 AM

Action Rating: 3 out of 5

Saturday, April 26, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 48.3°F
Average Humidity: 88%
Chance of Rain: 89%
Wind: 17.4 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 6.06 μg/m3
PM10: 9.38 μg/m3
Carbon Monoxide: 317.77 μg/m3
Nitrogen Dioxide: 2.87 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 83.15 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:14 PM
Sunset: 8:09 PM
Daylight: 13 hrs 47 mins
Moonrise: 5:31 AM
Moon Transit: 12:16 AM
Moonset: 7:15 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

7:30 PM - 10:00 PM
11:46 AM - 2:16 PM

Minor Periods

6:45 PM - 8:15 PM
5:01 AM - 6:31 AM

Action Rating: 5 out of 5

Sunday, April 27, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 47.4°F
Average Humidity: 79%
Chance of Rain: 0%
Wind: 15.2 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: 6:20 AM
Sun Transit: 1:14 PM
Sunset: 8:10 PM
Daylight: 13 hrs 49 mins
Moonrise: 6:00 AM
Moon Transit: 1:11 PM
Moonset: 8:38 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

8:25 PM - 10:55 PM
12:41 AM - 3:11 PM

Minor Periods

8:08 PM - 9:38 PM
5:30 AM - 7:00 AM

Action Rating: 5 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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