Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

64.6°F

Measurement Time: Sunday, May 3, 2026, 1:45 PM PDT

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

57.6°F
Partly cloudy
Partly cloudy
57.7°F
54.6°F
67%
SW 3.8 mph
6.2 mph
53.6°F
50°F
0 in
75%
9 mi
1014 mbar
0

Five Day Weather Forecast

Overcast
Sun
H: 62°F
L: 50°F
Partly Cloudy
Mon
H: 65°F
L: 53°F
Patchy rain nearby
Tue
H: 62°F
L: 52°F
Sunny
Wed
H: 71°F
L: 51°F
Sunny
Thu
H: 73°F
L: 51°F

Air Quality

AQI: 1 - Good
PM2.5: 9.65 μg/m3
PM10: 13.05 μg/m3
Carbon Monoxide: 144.85 μg/m3
Nitrogen Dioxide: 10.85 μg/m3
Sulphur Dioxide: 3.75 μg/m3
Ozone: 68 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:05 PM
Sunset: 8:01 PM
Daylight: 13 hrs 50 mins
Moonrise: 10:30 PM
Moon Transit: 2:15 AM
Moonset: 6:57 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:45 AM - 4:15 AM
9:44 AM - 12:14 AM

Minor Periods

10:00 PM - 11:30 PM
6:27 AM - 7:57 AM

Action Rating: 4 out of 5

Beach Hazards Statement issued May 3 at 1:12PM PDT until May 3 at 11:00PM PDT by NWS San Francisco CA

Effective: Sun May 3, 2026, 1:12 PM
Expires: Sun May 3, 2026, 11:00 PM

* WHAT...A long-period northwesterly swell will increase the risk of sneaker waves and strong rip currents. * WHERE...Beaches along the Pacific Coast. * WHEN...Now through Sunday evening. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion can be expected. Sneaker waves can sweep across the shoreline without warning, pulling people into the sea from rocks, jetties and beaches.

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.
Sunday, May 3, 2026

Weather Forecast

Overcast
62.1°F
50.4°F
56.1°F
79%
0 in
0%
0%
11.4 mph
5.2


Air Quality

AQI: 1 - Good
PM2.5: 11.92 μg/m3
PM10: 16.77 μg/m3
Carbon Monoxide: 144.45 μg/m3
Nitrogen Dioxide: 8.89 μg/m3
Sulphur Dioxide: 3.39 μg/m3
Ozone: 82.32 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:05 PM
Sunset: 8:01 PM
Daylight: 13 hrs 50 mins
Moonrise: 10:30 PM
Moon Transit: 2:15 AM
Moonset: 6:57 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:45 AM - 4:15 AM
9:44 AM - 12:14 AM

Minor Periods

10:00 PM - 11:30 PM
6:27 AM - 7:57 AM

Action Rating: 4 out of 5

Monday, May 4, 2026

Weather Forecast

Partly Cloudy
64.7°F
53.4°F
58°F
69%
0 in
0%
0%
9.6 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 10.05 μg/m3
PM10: 14.19 μg/m3
Carbon Monoxide: 141.65 μg/m3
Nitrogen Dioxide: 8.95 μg/m3
Sulphur Dioxide: 3.09 μg/m3
Ozone: 82.64 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:05 PM
Sunset: 8:01 PM
Daylight: 13 hrs 52 mins
Moonrise: 11:25 PM
Moon Transit: 3:05 AM
Moonset: 7:39 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

12:00 AM - 12:00 AM
7:09 AM - 8:39 AM

Action Rating: 2 out of 5

Tuesday, May 5, 2026

Weather Forecast

Patchy rain nearby
61.6°F
51.7°F
54.9°F
81%
0.19 in
86%
0%
6 mph
3.3


Air Quality

AQI: 1 - Good
PM2.5: 8.69 μg/m3
PM10: 11.97 μg/m3
Carbon Monoxide: 139.57 μg/m3
Nitrogen Dioxide: 10.41 μg/m3
Sulphur Dioxide: 3.47 μg/m3
Ozone: 85.16 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:05 PM
Sunset: 8:02 PM
Daylight: 13 hrs 54 mins
Moonrise: 12:25 AM
Moon Transit: 3:57 AM
Moonset: 8:29 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.8%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
11:26 AM - 1:56 PM

Minor Periods

7:59 AM - 9:29 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, May 6, 2026

Weather Forecast

Sunny
71°F
50.5°F
59.3°F
74%
0 in
0%
0%
10.5 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 12.59 μg/m3
PM10: 15.69 μg/m3
Carbon Monoxide: 163.57 μg/m3
Nitrogen Dioxide: 12.57 μg/m3
Sulphur Dioxide: 3.45 μg/m3
Ozone: 79.64 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:05 PM
Sunset: 8:03 PM
Daylight: 13 hrs 56 mins
Moonrise: 12:15 AM
Moon Transit: 4:48 AM
Moonset: 9:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.0%

Best Times for Fishing or Hunting

Major Periods

4:18 AM - 6:48 AM
12:17 AM - 2:47 PM

Minor Periods

8:54 AM - 10:24 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, May 7, 2026

Weather Forecast

Sunny
72.7°F
50.8°F
59.8°F
70%
0 in
0%
0%
10.5 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 15.27 μg/m3
PM10: 17.79 μg/m3
Carbon Monoxide: 181.54 μg/m3
Nitrogen Dioxide: 17.03 μg/m3
Sulphur Dioxide: 3.8 μg/m3
Ozone: 66.62 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:05 PM
Sunset: 8:04 PM
Daylight: 13 hrs 58 mins
Moonrise: 12:58 AM
Moon Transit: 5:38 AM
Moonset: 10:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

5:08 AM - 7:38 AM
1:07 PM - 3:37 PM

Minor Periods

9:54 AM - 11:24 AM
12:28 AM - 1:58 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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