Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

56.3°F

Measurement Time: Wednesday, January 28, 2026, 12:45 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

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

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 mi)
San Francisco Bay, San Mateo, CA (11 mi)
Coyote Creek, San Jose, CA (12 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 mi)

Weather for Menlo Park, California

Current Weather

62.8°F
Sunny
Sunny
62.8°F
62.7°F
63%
N 5.4 mph
6.9 mph
62.7°F
52.1°F
0 in
0%
9 mi
1027 mbar
0.4

Five Day Weather Forecast

Sunny
Wed
H: 64°F
L: 48°F
Partly Cloudy
Thu
H: 69°F
L: 42°F
Cloudy
Fri
H: 67°F
L: 41°F
Cloudy
Sat
H: 77°F
L: 48°F
Overcast
Sun
H: 63°F
L: 50°F

Air Quality

AQI: 2 - Moderate
PM2.5: 28.55 μg/m3
PM10: 31.05 μg/m3
Carbon Monoxide: 299.85 μg/m3
Nitrogen Dioxide: 57.15 μg/m3
Sulphur Dioxide: 8.45 μg/m3
Ozone: 6 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:21 AM
Sunset: 5:28 PM
Daylight: 10 hrs 13 mins
Moonrise: 12:52 AM
Moon Transit: 8:45 PM
Moonset: 3:33 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

3:15 AM - 5:45 AM
8:15 PM - 10:45 PM

Minor Periods

12:22 AM - 1:52 PM
3:03 AM - 4:33 AM

Action Rating: 2 out of 5

Beach Hazards Statement issued January 28 at 4:40AM PST until January 30 at 9:00AM PST by NWS San Francisco CA

Effective: Wed January 28, 2026, 4:40 AM
Expires: Wed January 28, 2026, 2:00 PM

* WHAT...An increased risk of sneaker waves and strong rip currents with breaking waves of 14 to 19 feet. * WHERE...Pacific Coast beaches. * WHEN...9 PM PST Wednesday evening through 9 AM PST Friday morning. * IMPACTS...Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves.

Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.


Beach Hazards Statement issued January 28 at 11:07AM PST until January 30 at 9:00AM PST by NWS San Francisco CA

Effective: Wed January 28, 2026, 11:07 AM
Expires: Wed January 28, 2026, 9:00 PM

* WHAT...An increased risk of sneaker waves and strong rip currents with breaking waves of 14 to 19 feet. * WHERE...Pacific Coast beaches. * WHEN...From 9 PM PST this evening through Friday morning. * IMPACTS...Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves.

Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.
Wednesday, January 28, 2026

Weather Forecast

Sunny
64.4°F
48.2°F
54.7°F
83%
0 in
0%
0%
5.8 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 20.67 μg/m3
PM10: 24.47 μg/m3
Carbon Monoxide: 326.49 μg/m3
Nitrogen Dioxide: 40.28 μg/m3
Sulphur Dioxide: 6.12 μg/m3
Ozone: 27.44 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:21 AM
Sunset: 5:28 PM
Daylight: 10 hrs 13 mins
Moonrise: 12:52 AM
Moon Transit: 8:45 PM
Moonset: 3:33 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

3:15 AM - 5:45 AM
8:15 PM - 10:45 PM

Minor Periods

12:22 AM - 1:52 PM
3:03 AM - 4:33 AM

Action Rating: 2 out of 5

Thursday, January 29, 2026

Weather Forecast

Partly Cloudy
68.7°F
42.3°F
53.4°F
76%
0 in
0%
0%
3.8 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 18.81 μg/m3
PM10: 21.73 μg/m3
Carbon Monoxide: 280.17 μg/m3
Nitrogen Dioxide: 41.81 μg/m3
Sulphur Dioxide: 6.45 μg/m3
Ozone: 25.92 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:21 AM
Sunset: 5:29 PM
Daylight: 10 hrs 15 mins
Moonrise: 1:53 PM
Moon Transit: 9:50 PM
Moonset: 4:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
9:20 PM - 11:50 PM

Minor Periods

1:23 PM - 2:53 PM
4:13 AM - 5:43 AM

Action Rating: 3 out of 5

Friday, January 30, 2026

Weather Forecast

Cloudy
67.1°F
41.4°F
53.3°F
74%
0 in
0%
0%
2.9 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 21.54 μg/m3
PM10: 24.91 μg/m3
Carbon Monoxide: 398.09 μg/m3
Nitrogen Dioxide: 42.35 μg/m3
Sulphur Dioxide: 6.27 μg/m3
Ozone: 24.24 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:21 AM
Sunset: 5:30 PM
Daylight: 10 hrs 17 mins
Moonrise: 3:04 PM
Moon Transit: 10:53 PM
Moonset: 5:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
12:00 AM - 12:00 AM

Minor Periods

2:34 PM - 4:04 PM
5:14 AM - 6:44 AM

Action Rating: 3 out of 5

Saturday, January 31, 2026

Weather Forecast

Cloudy
76.8°F
47.7°F
57.7°F
60%
0 in
0%
0%
4.3 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 19.99 μg/m3
PM10: 22.22 μg/m3
Carbon Monoxide: 449.01 μg/m3
Nitrogen Dioxide: 35.3 μg/m3
Sulphur Dioxide: 5.35 μg/m3
Ozone: 26.64 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:21 AM
Sunset: 5:32 PM
Daylight: 10 hrs 19 mins
Moonrise: 4:19 PM
Moon Transit: 11:53 PM
Moonset: 6:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%

Best Times for Fishing or Hunting

Major Periods

6:26 AM - 8:56 AM
12:00 AM - 12:00 AM

Minor Periods

3:49 PM - 5:19 PM
6:05 AM - 7:35 AM

Action Rating: 4 out of 5

Sunday, February 1, 2026

Weather Forecast

Overcast
62.5°F
50.4°F
55°F
66%
0 in
0%
0%
8.1 mph
0


Air Quality

AQI: 2 - Moderate
PM2.5: 37.76 μg/m3
PM10: 39.89 μg/m3
Carbon Monoxide: 645.93 μg/m3
Nitrogen Dioxide: 59.85 μg/m3
Sulphur Dioxide: 10.16 μg/m3
Ozone: 15.77 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:22 AM
Sunset: 5:33 PM
Daylight: 10 hrs 21 mins
Moonrise: 5:34 PM
Moon Transit: 12:00 AM
Moonset: 7:16 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:24 AM - 9:54 AM

Minor Periods

5:04 PM - 6:34 PM
6:46 AM - 8:16 AM

Action Rating: 6 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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