Water Temperature of Humboldt Bay in Eureka, CA

Current Water Temperature

50.4°F

Measurement Time: Thursday, May 21, 2026, 7:12 PM PDT

Today's Tides

 High: May 21, 3:17 AM, 7.0 ft
Low: May 21, 10:26 AM, -1.3 ft
 High: May 21, 5:33 PM, 5.4 ft
Low: May 21, 10:32 PM, 2.9 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

53.1°F
Partly cloudy
Partly cloudy
50.6°F
55.3°F
86%
N 7.6 mph
10.1 mph
54°F
50.1°F
0 in
50%
6 mi
1012 mbar
4

Five Day Weather Forecast

Sunny
Thu
H: 61°F
L: 46°F
Patchy rain nearby
Fri
H: 60°F
L: 48°F
Sunny
Sat
H: 60°F
L: 50°F
Sunny
Sun
H: 59°F
L: 47°F
Patchy rain nearby
Mon
H: 59°F
L: 45°F

Air Quality

AQI: 1 - Good
PM2.5: 15.75 μg/m3
PM10: 21.65 μg/m3
Carbon Monoxide: 132.85 μg/m3
Nitrogen Dioxide: 16.15 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 46 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:13 PM
Sunset: 8:34 PM
Daylight: 14 hrs 39 mins
Moonrise: 10:54 AM
Moon Transit: 6:23 PM
Moonset: 1:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
5:53 PM - 8:23 PM

Minor Periods

10:24 AM - 11:54 AM
12:36 AM - 2:06 AM

Action Rating: 3 out of 5

Thursday, May 21, 2026

Weather Forecast

Sunny
61°F
46.2°F
53.5°F
85%
0 in
0%
0%
10.1 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 13.05 μg/m3
PM10: 19.24 μg/m3
Carbon Monoxide: 132.61 μg/m3
Nitrogen Dioxide: 6.13 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 67.72 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:13 PM
Sunset: 8:34 PM
Daylight: 14 hrs 39 mins
Moonrise: 10:54 AM
Moon Transit: 6:23 PM
Moonset: 1:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
5:53 PM - 8:23 PM

Minor Periods

10:24 AM - 11:54 AM
12:36 AM - 2:06 AM

Action Rating: 3 out of 5

Friday, May 22, 2026

Weather Forecast

Patchy rain nearby
59.6°F
48.3°F
53.8°F
85%
0.01 in
89%
0%
11.2 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 12.99 μg/m3
PM10: 18.48 μg/m3
Carbon Monoxide: 127.05 μg/m3
Nitrogen Dioxide: 8.57 μg/m3
Sulphur Dioxide: 1.52 μg/m3
Ozone: 65.56 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:13 PM
Sunset: 8:34 PM
Daylight: 14 hrs 41 mins
Moonrise: 12:08 AM
Moon Transit: 7:13 PM
Moonset: 1:39 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

1:35 AM - 4:05 AM
6:43 PM - 9:13 PM

Minor Periods

11:38 AM - 1:08 PM
1:09 AM - 2:39 AM

Action Rating: 2 out of 5

Saturday, May 23, 2026

Weather Forecast

Sunny
60°F
49.6°F
54.6°F
85%
0 in
0%
0%
6.9 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 11.68 μg/m3
PM10: 16.97 μg/m3
Carbon Monoxide: 108.85 μg/m3
Nitrogen Dioxide: 5.21 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 56.68 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:13 PM
Sunset: 8:35 PM
Daylight: 14 hrs 43 mins
Moonrise: 1:18 PM
Moon Transit: 8:00 PM
Moonset: 2:05 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

2:24 AM - 4:54 AM
7:30 PM - 10:00 PM

Minor Periods

12:48 AM - 2:18 PM
1:35 AM - 3:05 AM

Action Rating: 2 out of 5

Sunday, May 24, 2026

Weather Forecast

Sunny
59.3°F
47.4°F
53.2°F
85%
0 in
0%
0%
9.2 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 12.34 μg/m3
PM10: 16.43 μg/m3
Carbon Monoxide: 117.93 μg/m3
Nitrogen Dioxide: 7.86 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 52.48 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:13 PM
Sunset: 8:36 PM
Daylight: 14 hrs 44 mins
Moonrise: 2:24 PM
Moon Transit: 8:42 PM
Moonset: 2:28 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

3:08 AM - 5:38 AM
8:12 PM - 10:42 PM

Minor Periods

1:54 PM - 3:24 PM
1:58 AM - 3:28 AM

Action Rating: 4 out of 5

Monday, May 25, 2026

Weather Forecast

Patchy rain nearby
59.3°F
44.6°F
51.2°F
83%
0.03 in
84%
0%
11 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 10.93 μg/m3
PM10: 14.36 μg/m3
Carbon Monoxide: 151.8 μg/m3
Nitrogen Dioxide: 8.02 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 56.23 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:13 PM
Sunset: 8:37 PM
Daylight: 14 hrs 46 mins
Moonrise: 3:28 PM
Moon Transit: 9:24 PM
Moonset: 2:49 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%

Best Times for Fishing or Hunting

Major Periods

3:51 AM - 6:21 AM
8:54 PM - 11:24 PM

Minor Periods

2:58 PM - 4:28 PM
2:19 AM - 3:49 AM

Action Rating: 4 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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