Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

58.1°F

Measurement Time: Friday, November 28, 2025, 1:45 AM PST

Temperature Locations

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Local Points of Interest

Don Edwards San Francisco Bay National Wildlife Refuge; Bedwell Bayfront Park; Dumbarton Bridge; Newark, CA; East Palo Alto, CA

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San Francisco Bay

Station Name: SOUTH SAN FRANCISCO BAY AT DUMBARTON BRIDGE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
Dumbarton Bridge
Menlo Park, CA
San Mateo County

GPS Coordinates: 37.5041043, -122.1205192

Nearby Water Temperatures

Redwood Creek, Redwood City, CA (4.9 mi)
Coyote Creek, Alviso, CA (6.0 mi)
San Francisco Bay, San Mateo, CA (11.0 mi)
Coyote Creek, San Jose, CA (12.0 mi)
Arroyo Hondo, San Jose, CA (19.5 mi)
San Francisco Bay, Alameda, CA (20.9 mi)
Arroyo Valle, Livermore, CA (21.5 mi)
San Francisco Bay, San Francisco, CA (25.6 mi)
San Francisco Bay, San Francisco, CA (27.7 mi)
San Francisco Bay, San Francisco, CA (28.2 mi)
Coyote Creek, Coyote, CA (28.7 mi)
Rodeo Pond, Sausalito, CA (31.7 mi)
Rodeo Lagoon, Sausalito, CA (31.7 mi)
Rodeo Lagoon, Sausalito, CA (31.9 mi)
San Francisco Bay, Richmond, CA (33.0 mi)

Weather for Menlo Park, California

Current Weather

50°F
Mist
Conditions: Mist
Humidity: 82%
Feels Like: 50.5°F
Wind: WNW 2.2 mph
Wind Gusts: 6.7 mph
Pressure: 30.18 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 2 mi
UV Index: 1.4

Five Day Weather Forecast

Partly Cloudy
Fri
H: 59°F
L: 44°F
Mist
Sat
H: 63°F
L: 46°F
Mist
Sun
H: 62°F
L: 42°F
Sunny
Mon
H: 61°F
L: 49°F
Sunny
Tue
H: 61°F
L: 50°F

Air Quality

AQI: 2 - Moderate
PM2.5: 15.95 μg/m3
PM10: 18.65 μg/m3
Carbon Monoxide: 302.85 μg/m3
Nitrogen Dioxide: 44.25 μg/m3
Sulphur Dioxide: 7.65 μg/m3
Ozone: 33 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 11:56 AM
Sunset: 4:51 PM
Daylight: 9 hrs 49 mins
Moonrise: 12:58 AM
Moon Transit: 6:48 PM
Moonset: 12:42 AM
Moon Phase: First Quarter
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
6:18 PM - 8:48 PM

Minor Periods

12:28 AM - 1:58 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Beach Hazards Statement issued November 28 at 3:24AM PST until November 30 at 10:00PM PST by NWS San Francisco CA

Effective: Fri November 28, 2025, 3:24 AM
Expires: Fri November 28, 2025, 7:00 PM

* WHAT...Moderate to long period northwesterly swell will result in an increased risk for sneaker waves and rip currents. Breaking waves of 13 to 18 feet are expected. * WHERE...Pacific Coast beaches. * WHEN...Through 10 PM PST Sunday evening. * IMPACTS...Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. Rip currents are typically more frequent and stronger in the vicinity of jetties, inlets, and piers.

Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves. Stay off the rocks and NEVER turn your back on the ocean!
Friday, November 28, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 49.2°F
Average Humidity: 87%
Chance of Rain: 0%
Wind: 4.7 mph
UV Index: 0.5

Air Quality

AQI: 2 - Moderate
PM2.5: 31.23 μg/m3
PM10: 32.72 μg/m3
Carbon Monoxide: 466.41 μg/m3
Nitrogen Dioxide: 42.81 μg/m3
Sulphur Dioxide: 8 μg/m3
Ozone: 18.68 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 11:56 AM
Sunset: 4:51 PM
Daylight: 9 hrs 49 mins
Moonrise: 12:58 AM
Moon Transit: 6:48 PM
Moonset: 12:42 AM
Moon Phase: First Quarter
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
6:18 PM - 8:48 PM

Minor Periods

12:28 AM - 1:58 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, November 29, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 51.7°F
Average Humidity: 80%
Chance of Rain: 0%
Wind: 6.3 mph
UV Index: 0.4

Air Quality

AQI: 2 - Moderate
PM2.5: 28.9 μg/m3
PM10: 31.31 μg/m3
Carbon Monoxide: 372.61 μg/m3
Nitrogen Dioxide: 48.18 μg/m3
Sulphur Dioxide: 9.08 μg/m3
Ozone: 18.08 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 11:57 AM
Sunset: 4:51 PM
Daylight: 9 hrs 48 mins
Moonrise: 1:22 PM
Moon Transit: 6:12 PM
Moonset: 12:49 AM
Moon Phase: First Quarter
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

2:15 AM - 4:45 AM
5:42 PM - 8:12 PM

Minor Periods

12:52 AM - 2:22 PM
12:19 AM - 1:49 AM

Action Rating: 2 out of 5

Sunday, November 30, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 50.1°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 6.9 mph
UV Index: 0.4

Air Quality

AQI: 2 - Moderate
PM2.5: 25.02 μg/m3
PM10: 27.48 μg/m3
Carbon Monoxide: 372.45 μg/m3
Nitrogen Dioxide: 45.54 μg/m3
Sulphur Dioxide: 8.75 μg/m3
Ozone: 18.96 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 11:57 AM
Sunset: 4:51 PM
Daylight: 9 hrs 47 mins
Moonrise: 1:48 PM
Moon Transit: 8:22 PM
Moonset: 1:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:52 PM - 10:22 PM

Minor Periods

1:18 PM - 2:48 PM
1:27 AM - 2:57 AM

Action Rating: 2 out of 5

Monday, December 1, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 54.2°F
Average Humidity: 58%
Chance of Rain: 0%
Wind: 2.7 mph
UV Index: 0.4

Air Quality

AQI: 2 - Moderate
PM2.5: 20.47 μg/m3
PM10: 21.97 μg/m3
Carbon Monoxide: 359.13 μg/m3
Nitrogen Dioxide: 42.12 μg/m3
Sulphur Dioxide: 7.15 μg/m3
Ozone: 19.6 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 11:57 AM
Sunset: 4:51 PM
Daylight: 9 hrs 46 mins
Moonrise: 2:18 PM
Moon Transit: 9:14 PM
Moonset: 3:09 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

3:51 AM - 6:21 AM
8:44 PM - 11:14 PM

Minor Periods

1:48 PM - 3:18 PM
2:39 AM - 4:09 AM

Action Rating: 2 out of 5

Tuesday, December 2, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 54.2°F
Average Humidity: 58%
Chance of Rain: 0%
Wind: 3.6 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 29.32 μg/m3
PM10: 30.9 μg/m3
Carbon Monoxide: 644.54 μg/m3
Nitrogen Dioxide: 40.66 μg/m3
Sulphur Dioxide: 5.87 μg/m3
Ozone: 7.31 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 11:58 AM
Sunset: 4:50 PM
Daylight: 9 hrs 45 mins
Moonrise: 2:52 PM
Moon Transit: 10:11 PM
Moonset: 4:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

4:45 AM - 7:15 AM
12:00 AM - 12:00 AM

Minor Periods

2:22 PM - 3:52 PM
3:55 AM - 5:25 AM

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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