Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

55.9°F

Measurement Time: Monday, February 2, 2026, 2:45 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

57.7°F
Sunny
Sunny
58°F
59.9°F
72%
NNW 3.6 mph
4.1 mph
59.9°F
51.2°F
0 in
0%
9 mi
1023 mbar
3

Five Day Weather Forecast

Sunny
Mon
H: 67°F
L: 45°F
Sunny
Tue
H: 75°F
L: 42°F
Sunny
Wed
H: 77°F
L: 49°F
Partly Cloudy
Thu
H: 70°F
L: 52°F
Partly Cloudy
Fri
H: 68°F
L: 54°F

Air Quality

AQI: 2 - Moderate
PM2.5: 40.65 μg/m3
PM10: 42.45 μg/m3
Carbon Monoxide: 487.85 μg/m3
Nitrogen Dioxide: 70.55 μg/m3
Sulphur Dioxide: 11.05 μg/m3
Ozone: 2 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:22 AM
Sunset: 5:34 PM
Daylight: 10 hrs 23 mins
Moonrise: 6:46 PM
Moon Transit: 12:47 AM
Moonset: 7:49 AM
Moon Phase: Full
Moon Illumination: 99.4%

Best Times for Fishing or Hunting

Major Periods

12:17 AM - 2:47 AM
8:16 AM - 10:46 AM

Minor Periods

6:16 PM - 7:46 PM
7:19 AM - 8:49 AM

Action Rating: 4 out of 5

Beach Hazards Statement issued February 2 at 1:18AM PST until February 2 at 9:00PM PST by NWS San Francisco CA

Effective: Mon February 2, 2026, 1:18 AM
Expires: Mon February 2, 2026, 1:00 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...Through 9 PM PST Monday evening. * 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 February 2 at 8:30AM PST until February 2 at 9:00PM PST by NWS San Francisco CA

Effective: Mon February 2, 2026, 8:30 AM
Expires: Mon February 2, 2026, 4:30 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...Through 9 PM PST this evening. * 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.
Monday, February 2, 2026

Weather Forecast

Sunny
66.9°F
45.3°F
54.5°F
72%
0 in
0%
0%
3.8 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 34.22 μg/m3
PM10: 36.82 μg/m3
Carbon Monoxide: 278.73 μg/m3
Nitrogen Dioxide: 47.53 μg/m3
Sulphur Dioxide: 10.35 μg/m3
Ozone: 26.44 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:22 AM
Sunset: 5:34 PM
Daylight: 10 hrs 23 mins
Moonrise: 6:46 PM
Moon Transit: 12:47 AM
Moonset: 7:49 AM
Moon Phase: Full
Moon Illumination: 99.4%

Best Times for Fishing or Hunting

Major Periods

12:17 AM - 2:47 AM
8:16 AM - 10:46 AM

Minor Periods

6:16 PM - 7:46 PM
7:19 AM - 8:49 AM

Action Rating: 4 out of 5

Tuesday, February 3, 2026

Weather Forecast

Sunny
75.4°F
42.3°F
56°F
75%
0 in
0%
0%
2.9 mph
0.7


Air Quality

AQI: 2 - Moderate
PM2.5: 25.59 μg/m3
PM10: 27.77 μg/m3
Carbon Monoxide: 358.57 μg/m3
Nitrogen Dioxide: 46.57 μg/m3
Sulphur Dioxide: 7.95 μg/m3
Ozone: 29 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:22 AM
Sunset: 5:35 PM
Daylight: 10 hrs 25 mins
Moonrise: 7:53 PM
Moon Transit: 1:36 AM
Moonset: 8:17 AM
Moon Phase: Full
Moon Illumination: 96.3%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
9:04 AM - 11:34 AM

Minor Periods

7:23 PM - 8:53 PM
7:47 AM - 9:17 AM

Action Rating: 3 out of 5

Wednesday, February 4, 2026

Weather Forecast

Sunny
77.4°F
49.3°F
61.5°F
63%
0 in
0%
0%
3.4 mph
0.7


Air Quality

AQI: 2 - Moderate
PM2.5: 23.81 μg/m3
PM10: 27.1 μg/m3
Carbon Monoxide: 462.21 μg/m3
Nitrogen Dioxide: 35.91 μg/m3
Sulphur Dioxide: 5.29 μg/m3
Ozone: 27.12 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:22 AM
Sunset: 5:36 PM
Daylight: 10 hrs 27 mins
Moonrise: 8:58 PM
Moon Transit: 2:22 AM
Moonset: 8:41 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

1:52 AM - 4:22 AM
9:49 AM - 12:19 AM

Minor Periods

8:28 PM - 9:58 PM
8:11 AM - 9:41 AM

Action Rating: 3 out of 5

Thursday, February 5, 2026

Weather Forecast

Partly Cloudy
70.4°F
52°F
59.5°F
62%
0 in
0%
0%
3.4 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 20.65 μg/m3
PM10: 23.23 μg/m3
Carbon Monoxide: 463.72 μg/m3
Nitrogen Dioxide: 34.39 μg/m3
Sulphur Dioxide: 4.73 μg/m3
Ozone: 33.2 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:22 AM
Sunset: 5:37 PM
Daylight: 10 hrs 29 mins
Moonrise: 10:00 PM
Moon Transit: 3:05 AM
Moonset: 9:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

2:35 AM - 5:05 AM
10:32 AM - 1:02 PM

Minor Periods

9:30 PM - 11:00 PM
8:34 AM - 10:04 AM

Action Rating: 2 out of 5

Friday, February 6, 2026

Weather Forecast

Partly Cloudy
67.6°F
53.6°F
59.4°F
57%
0 in
0%
0%
4.9 mph
0


Air Quality

AQI: 2 - Moderate
PM2.5: 33.32 μg/m3
PM10: 36.25 μg/m3
Carbon Monoxide: 591.97 μg/m3
Nitrogen Dioxide: 51.57 μg/m3
Sulphur Dioxide: 7.38 μg/m3
Ozone: 16 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:22 AM
Sunset: 5:38 PM
Daylight: 10 hrs 31 mins
Moonrise: 11:02 PM
Moon Transit: 3:48 AM
Moonset: 9:27 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.1%

Best Times for Fishing or Hunting

Major Periods

3:18 AM - 5:48 AM
11:14 AM - 1:44 PM

Minor Periods

12:00 AM - 12:00 AM
8:57 AM - 10:27 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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