Water Temperature of Humboldt Bay in Eureka, CA

Current Water Temperature

Current temperature data is
not available at this time.

Today's Tides

 High: July 18, 2:53 AM, 6.6 ft
Low: July 18, 9:24 AM, -0.4 ft
 High: July 18, 4:09 PM, 6.5 ft
Low: July 18, 9:58 PM, 1.8 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

Humboldt Bay

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

Elevation Above Sea Level: 0 feet

Sensor Depth: -4 feet

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

61°F
Cloudy
Cloudy
61°F
60.4°F
81%
NNW 8.1 mph
9.3 mph
60.4°F
58°F
0 in
25%
9 mi
1017 mbar
5.1

Five Day Weather Forecast

Overcast
Sat
H: 62°F
L: 55°F
Sunny
Sun
H: 65°F
L: 52°F
Partly Cloudy
Mon
H: 67°F
L: 53°F
Sunny
Tue
H: 66°F
L: 53°F
Patchy rain nearby
Wed
H: 66°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 9.2 μg/m3
PM10: 12.5 μg/m3
Carbon Monoxide: 90 μg/m3
Nitrogen Dioxide: 2.9 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:23 PM
Sunset: 8:45 PM
Daylight: 14 hrs 44 mins
Moonrise: 11:04 AM
Moon Transit: 5:16 PM
Moonset: 11:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:46 PM - 7:16 PM

Minor Periods

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

Action Rating: 2 out of 5

Small Craft Advisory issued July 18 at 3:02AM PDT until July 20 at 3:00PM PDT by NWS Eureka CA

Effective: Sat July 18, 2026, 10:02 AM
Expires: Sat July 18, 2026, 6:15 PM

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 10 feet. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 PM PDT Monday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Saturday, July 18, 2026

Weather Forecast

Overcast
62.1°F
55.2°F
57.7°F
93%
0 in
38%
0%
8.1 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 9.8 μg/m3
PM10: 13.18 μg/m3
Carbon Monoxide: 94.58 μg/m3
Nitrogen Dioxide: 6.66 μg/m3
Sulphur Dioxide: 0.42 μg/m3
Ozone: 49.88 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:23 PM
Sunset: 8:45 PM
Daylight: 14 hrs 44 mins
Moonrise: 11:04 AM
Moon Transit: 5:16 PM
Moonset: 11:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:46 PM - 7:16 PM

Minor Periods

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

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
65.3°F
51.9°F
58.8°F
83%
0 in
16%
0%
7.8 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 12.48 μg/m3
PM10: 16.19 μg/m3
Carbon Monoxide: 96.04 μg/m3
Nitrogen Dioxide: 8.27 μg/m3
Sulphur Dioxide: 0.43 μg/m3
Ozone: 49.42 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:23 PM
Sunset: 8:44 PM
Daylight: 14 hrs 43 mins
Moonrise: 12:11 AM
Moon Transit: 6:00 PM
Moonset: 12:17 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

12:26 AM - 2:56 AM
5:30 PM - 8:00 PM

Minor Periods

11:41 AM - 1:11 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Partly Cloudy
66.5°F
53.1°F
59.4°F
83%
0 in
14%
0%
8.5 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 11.26 μg/m3
PM10: 15.36 μg/m3
Carbon Monoxide: 96.54 μg/m3
Nitrogen Dioxide: 6.37 μg/m3
Sulphur Dioxide: 0.49 μg/m3
Ozone: 52.38 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:23 PM
Sunset: 8:44 PM
Daylight: 14 hrs 41 mins
Moonrise: 1:16 PM
Moon Transit: 6:43 PM
Moonset: 12:38 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

1:09 AM - 3:39 AM
6:13 PM - 8:43 PM

Minor Periods

12:46 AM - 2:16 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
65.7°F
53°F
59.1°F
83%
0 in
13%
0%
6.5 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 7.39 μg/m3
PM10: 10.47 μg/m3
Carbon Monoxide: 96.63 μg/m3
Nitrogen Dioxide: 3.78 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 57.54 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:23 PM
Sunset: 8:43 PM
Daylight: 14 hrs 39 mins
Moonrise: 2:21 PM
Moon Transit: 7:27 PM
Moonset: 12:01 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

1:53 AM - 4:23 AM
6:57 PM - 9:27 PM

Minor Periods

1:51 PM - 3:21 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Patchy rain nearby
66.2°F
51.7°F
58.6°F
83%
0.01 in
27%
0%
6.9 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 8.62 μg/m3
PM10: 11.53 μg/m3
Carbon Monoxide: 128 μg/m3
Nitrogen Dioxide: 6.4 μg/m3
Sulphur Dioxide: 0.62 μg/m3
Ozone: 45 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:23 PM
Sunset: 8:42 PM
Daylight: 14 hrs 38 mins
Moonrise: 3:25 PM
Moon Transit: 8:13 PM
Moonset: 12:27 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

2:37 AM - 5:07 AM
7:43 PM - 10:13 PM

Minor Periods

2:55 PM - 4:25 PM
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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