Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

63.0°F

Measurement Time: Monday, April 20, 2026, 10:45 AM 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

57.7°F
Light rain
Light rain
55.7°F
56.8°F
88%
SSW 9.6 mph
12.9 mph
55.3°F
51°F
0 in
75%
9 mi
1012 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Mon
H: 70°F
L: 52°F
Moderate rain
Tue
H: 60°F
L: 49°F
Patchy rain nearby
Wed
H: 62°F
L: 46°F
Partly Cloudy
Thu
H: 65°F
L: 48°F
Partly Cloudy
Fri
H: 66°F
L: 50°F

Air Quality

AQI: 1 - Good
PM2.5: 4.25 μg/m3
PM10: 5.05 μg/m3
Carbon Monoxide: 186.85 μg/m3
Nitrogen Dioxide: 11.25 μg/m3
Sulphur Dioxide: 2.95 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 1:07 PM
Sunset: 7:49 PM
Daylight: 13 hrs 22 mins
Moonrise: 8:30 AM
Moon Transit: 4:23 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:53 PM - 6:23 PM

Minor Periods

8:00 AM - 9:30 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, April 20, 2026

Weather Forecast

Patchy rain nearby
69.6°F
51.8°F
58.1°F
70%
0.15 in
84%
0%
13 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 7.41 μg/m3
PM10: 10.4 μg/m3
Carbon Monoxide: 178.09 μg/m3
Nitrogen Dioxide: 16.71 μg/m3
Sulphur Dioxide: 3.37 μg/m3
Ozone: 72.84 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 1:07 PM
Sunset: 7:49 PM
Daylight: 13 hrs 22 mins
Moonrise: 8:30 AM
Moon Transit: 4:23 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:53 PM - 6:23 PM

Minor Periods

8:00 AM - 9:30 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, April 21, 2026

Weather Forecast

Moderate rain
59.5°F
48.8°F
54.3°F
83%
0.43 in
91%
0%
12.8 mph
3.6


Air Quality

AQI: 1 - Good
PM2.5: 4.65 μg/m3
PM10: 5.96 μg/m3
Carbon Monoxide: 169.53 μg/m3
Nitrogen Dioxide: 8.91 μg/m3
Sulphur Dioxide: 2.46 μg/m3
Ozone: 75.08 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:07 PM
Sunset: 7:49 PM
Daylight: 13 hrs 24 mins
Moonrise: 9:32 AM
Moon Transit: 5:28 PM
Moonset: 12:21 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:58 PM - 7:28 PM

Minor Periods

9:02 AM - 10:32 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, April 22, 2026

Weather Forecast

Patchy rain nearby
61.9°F
45.8°F
53.7°F
74%
0.06 in
88%
0%
10.1 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 5.85 μg/m3
PM10: 7.51 μg/m3
Carbon Monoxide: 173.61 μg/m3
Nitrogen Dioxide: 9.69 μg/m3
Sulphur Dioxide: 2.71 μg/m3
Ozone: 79.04 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 1:06 PM
Sunset: 7:50 PM
Daylight: 13 hrs 26 mins
Moonrise: 10:42 AM
Moon Transit: 6:30 PM
Moonset: 1:21 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

1:01 AM - 3:31 AM
6:00 PM - 8:30 PM

Minor Periods

10:12 AM - 11:42 AM
12:51 AM - 2:21 AM

Action Rating: 2 out of 5

Thursday, April 23, 2026

Weather Forecast

Partly Cloudy
65.1°F
48.3°F
55.9°F
70%
0 in
0%
0%
9.8 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 10.23 μg/m3
PM10: 12.34 μg/m3
Carbon Monoxide: 175.3 μg/m3
Nitrogen Dioxide: 16.71 μg/m3
Sulphur Dioxide: 3.63 μg/m3
Ozone: 69.76 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:06 PM
Sunset: 7:51 PM
Daylight: 13 hrs 28 mins
Moonrise: 11:54 AM
Moon Transit: 7:27 PM
Moonset: 2:11 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

2:02 AM - 4:32 AM
6:57 PM - 9:27 PM

Minor Periods

11:24 AM - 12:54 AM
1:41 AM - 3:11 AM

Action Rating: 2 out of 5

Friday, April 24, 2026

Weather Forecast

Partly Cloudy
65.5°F
50.4°F
56.6°F
71%
0 in
0%
0%
10.1 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 10.79 μg/m3
PM10: 12.49 μg/m3
Carbon Monoxide: 223.16 μg/m3
Nitrogen Dioxide: 28.46 μg/m3
Sulphur Dioxide: 4.04 μg/m3
Ozone: 48 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:06 PM
Sunset: 7:52 PM
Daylight: 13 hrs 31 mins
Moonrise: 1:06 PM
Moon Transit: 8:19 PM
Moonset: 2:50 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

2:57 AM - 5:27 AM
7:49 PM - 10:19 PM

Minor Periods

12:36 AM - 2:06 PM
2:20 AM - 3:50 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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