Water Temperature of Humboldt Bay in Eureka, CA

Current Water Temperature

Current temperature data is
not available at this time.

Today's Tides

High: August 25, 1:23 AM, 6.65 ft
 Low: August 25, 7:42 AM, 0.27 ft
High: August 25, 2:11 PM, 6.39 ft
 Low: August 25, 8:04 PM, 1.39 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

57.9°F
Overcast
Conditions: Overcast
Humidity: 93%
Feels Like: 57°F
Wind: NNE 6.3 mph
Wind Gusts: 12.4 mph
Pressure: 29.9 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Partly Cloudy
Mon
H: 65°F
L: 57°F
Thundery outbreaks in nearby
Tue
H: 64°F
L: 56°F
Cloudy
Wed
H: 60°F
L: 57°F
Partly Cloudy
Thu
H: 64°F
L: 54°F
Patchy rain nearby
Fri
H: 66°F
L: 53°F

Air Quality

AQI: 2 - Moderate
PM2.5: 24.98 μg/m3
PM10: 30.16 μg/m3
Carbon Monoxide: 214.6 μg/m3
Nitrogen Dioxide: 44.4 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 33 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:18 PM
Sunset: 8:00 PM
Daylight: 13 hrs 22 mins
Moonrise: 9:08 AM
Moon Transit: 3:12 PM
Moonset: 9:06 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:42 PM - 5:12 PM

Minor Periods

8:36 PM - 10:06 PM
8:38 AM - 10:08 AM

Action Rating: 3 out of 5

Red Flag Warning issued August 25 at 1:32PM PDT until August 25 at 11:00PM PDT by NWS Eureka CA

Effective: Mon August 25, 2025, 8:32 PM
Expires: Tue August 26, 2025, 6:00 AM

...SCATTERED DRY THUNDERSTORMS EACH AFTERNOON THROUGH TUESDAY... .Scattered dry thunderstorms expected over high terrain in Trinity County each afternoon Monday and Tuesday. Some isolated thunderstorms as far south as northern Lake County and as far west as Highway 96 with increasing storm coverage through Tuesday. Though storms will drop rain in their cores, fuels are very dry on the heels of high heat. * AFFECTED AREA...Fire weather zone 283. * THUNDERSTORMS...Partially dry scattered storms over high terrain in the late afternoon and evening. * OUTFLOW WINDS...Gusty and erratic outflow winds over 50 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.


Special Weather Statement issued August 25 at 5:20PM PDT by NWS Eureka CA

Effective: Tue August 26, 2025, 12:20 AM
Expires: Tue August 26, 2025, 12:45 AM

At 520 PM PDT, Doppler radar was tracking a strong thunderstorm 7 miles north of Helena, or 13 miles northwest of Weaverville, moving northwest at 5 mph. HAZARD...Wind gusts up to 30 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Mainly rural areas of Northern Trinity County.

Monitor the weather situation closely and be alert for threatening weather conditions.


Flood Advisory issued August 25 at 4:47PM PDT until August 25 at 7:45PM PDT by NWS Eureka CA

Effective: Mon August 25, 2025, 11:47 PM
Expires: Tue August 26, 2025, 2:45 AM

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northwest California, including the following county, central Trinity. * WHEN...Until 745 PM PDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Dangerous flows over low-water crossings. * ADDITIONAL DETAILS... - At 447 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.5 and 1 inch of rain has fallen. - Additional rainfall amounts up to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Hayfork. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.


Flood Advisory issued August 25 at 4:43PM PDT until August 25 at 7:45PM PDT by NWS Eureka CA

Effective: Mon August 25, 2025, 11:43 PM
Expires: Tue August 26, 2025, 2:45 AM

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northwest California, including the following county, central Trinity. * WHEN...Until 745 PM PDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Dangerous flows over low-water crossings. * ADDITIONAL DETAILS... - At 443 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 1.5 inches of rain have fallen. - Some locations that will experience flooding include... Weaverville. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.


Red Flag Warning issued August 25 at 1:32PM PDT until August 25 at 11:00PM PDT by NWS Eureka CA

Effective: Mon August 25, 2025, 8:32 PM
Expires: Tue August 26, 2025, 6:00 AM

...SCATTERED DRY THUNDERSTORMS EACH AFTERNOON THROUGH TUESDAY... .Scattered dry thunderstorms expected over high terrain in Trinity County each afternoon Monday and Tuesday. Some isolated thunderstorms as far south as northern Lake County and as far west as Highway 96 with increasing storm coverage through Tuesday. Though storms will drop rain in their cores, fuels are very dry on the heels of high heat. * AFFECTED AREA...Fire weather zone 283. * THUNDERSTORMS...Partially dry scattered storms over high terrain in the late afternoon and evening. * OUTFLOW WINDS...Gusty and erratic outflow winds over 50 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.


Monday, August 25, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 60.1°F
Average Humidity: 90%
Chance of Rain: 0%
Wind: 8.7 mph
UV Index: 1.8

Air Quality

AQI: 2 - Moderate
PM2.5: 24.54 μg/m3
PM10: 31.01 μg/m3
Carbon Monoxide: 225.33 μg/m3
Nitrogen Dioxide: 34.3 μg/m3
Sulphur Dioxide: 0.82 μg/m3
Ozone: 58.6 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:18 PM
Sunset: 8:00 PM
Daylight: 13 hrs 22 mins
Moonrise: 9:08 AM
Moon Transit: 3:12 PM
Moonset: 9:06 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:42 PM - 5:12 PM

Minor Periods

8:36 PM - 10:06 PM
8:38 AM - 10:08 AM

Action Rating: 3 out of 5

Tuesday, August 26, 2025

Weather Forecast

Conditions: Thundery outbreaks in nearby
Average Temperature: 59.4°F
Average Humidity: 92%
Chance of Rain: 0%
Wind: 7.4 mph
UV Index: 1.6

Air Quality

AQI: 2 - Moderate
PM2.5: 21.52 μg/m3
PM10: 27.42 μg/m3
Carbon Monoxide: 217.34 μg/m3
Nitrogen Dioxide: 26.63 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 56.96 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 1:18 PM
Sunset: 7:58 PM
Daylight: 13 hrs 19 mins
Moonrise: 10:10 AM
Moon Transit: 3:52 PM
Moonset: 9:25 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:22 PM - 5:52 PM

Minor Periods

8:55 PM - 10:25 PM
9:40 AM - 11:10 AM

Action Rating: 2 out of 5

Wednesday, August 27, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 58.3°F
Average Humidity: 94%
Chance of Rain: 0%
Wind: 6 mph
UV Index: 1.8

Air Quality

AQI: 2 - Moderate
PM2.5: 15.72 μg/m3
PM10: 20.54 μg/m3
Carbon Monoxide: 215.64 μg/m3
Nitrogen Dioxide: 15.65 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 47.32 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 1:18 PM
Sunset: 7:56 PM
Daylight: 13 hrs 17 mins
Moonrise: 11:12 AM
Moon Transit: 4:33 PM
Moonset: 9:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

9:17 PM - 10:47 PM
10:42 AM - 12:12 AM

Action Rating: 2 out of 5

Thursday, August 28, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 58°F
Average Humidity: 92%
Chance of Rain: 0%
Wind: 7.4 mph
UV Index: 1.8

Air Quality

AQI: 2 - Moderate
PM2.5: 20 μg/m3
PM10: 25.95 μg/m3
Carbon Monoxide: 219.11 μg/m3
Nitrogen Dioxide: 16.68 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 48.96 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 1:17 PM
Sunset: 7:55 PM
Daylight: 13 hrs 14 mins
Moonrise: 12:15 AM
Moon Transit: 5:16 PM
Moonset: 10:11 PM
Moon Phase: Waxing Crescent
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

9:41 PM - 11:11 PM
11:45 AM - 1:15 PM

Action Rating: 2 out of 5

Friday, August 29, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 58.5°F
Average Humidity: 77%
Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 1.7

Air Quality

AQI: 2 - Moderate
PM2.5: 21.4 μg/m3
PM10: 28.13 μg/m3
Carbon Monoxide: 330.58 μg/m3
Nitrogen Dioxide: 28.25 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 39.92 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:17 PM
Sunset: 7:53 PM
Daylight: 13 hrs 12 mins
Moonrise: 1:18 PM
Moon Transit: 6:02 PM
Moonset: 10:40 PM
Moon Phase: Waxing Crescent
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

12:26 AM - 2:56 AM
5:32 PM - 8:02 PM

Minor Periods

10:10 PM - 11:40 PM
12:48 AM - 2:18 PM

Action Rating: 3 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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