Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

72.3°F

Measurement Time: Tuesday, July 14, 2026, 9:45 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

64.9°F
Clear
Clear
64.9°F
59.7°F
73%
W 3.1 mph
6.6 mph
59.7°F
50.3°F
0 in
0%
8 mi
1014 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 83°F
L: 60°F
Sunny
Thu
H: 78°F
L: 56°F
Sunny
Fri
H: 78°F
L: 55°F
Sunny
Sat
H: 81°F
L: 54°F
Sunny
Sun
H: 79°F
L: 56°F

Air Quality

AQI: 1 - Good
PM2.5: 12.5 μg/m3
PM10: 15.7 μg/m3
Carbon Monoxide: 126 μg/m3
Nitrogen Dioxide: 20.9 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 30 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:14 PM
Sunset: 8:29 PM
Daylight: 14 hrs 30 mins
Moonrise: 7:22 AM
Moon Transit: 2:41 PM
Moonset: 9:48 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:11 PM - 4:41 PM

Minor Periods

9:18 PM - 10:48 PM
6:52 AM - 8:22 AM

Action Rating: 3 out of 5

Small Craft Advisory issued July 14 at 8:31PM PDT until July 16 at 3:00PM PDT by NWS San Francisco CA

Effective: Tue July 14, 2026, 8:31 PM
Expires: Wed July 15, 2026, 4:45 AM

* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt expected. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 NM. * WHEN...From 9 AM Wednesday to 3 PM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Wednesday, July 15, 2026

Weather Forecast

Sunny
82.6°F
59.7°F
68.1°F
56%
0 in
3%
0%
10.1 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 12.35 μg/m3
PM10: 16.41 μg/m3
Carbon Monoxide: 121.96 μg/m3
Nitrogen Dioxide: 13.61 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 61.46 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:14 PM
Sunset: 8:29 PM
Daylight: 14 hrs 30 mins
Moonrise: 7:22 AM
Moon Transit: 2:41 PM
Moonset: 9:48 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:11 PM - 4:41 PM

Minor Periods

9:18 PM - 10:48 PM
6:52 AM - 8:22 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
78°F
55.9°F
65.7°F
57%
0 in
3%
0%
9.8 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 11.24 μg/m3
PM10: 15.25 μg/m3
Carbon Monoxide: 96.88 μg/m3
Nitrogen Dioxide: 8.47 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 55.38 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:14 PM
Sunset: 8:29 PM
Daylight: 14 hrs 29 mins
Moonrise: 8:38 AM
Moon Transit: 3:34 PM
Moonset: 10:19 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:04 PM - 5:34 PM

Minor Periods

9:49 PM - 11:19 PM
8:08 AM - 9:38 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
77.7°F
54.5°F
64.5°F
63%
0 in
4%
0%
9.2 mph
10.2


Air Quality

AQI: 1 - Good
PM2.5: 12.33 μg/m3
PM10: 16.62 μg/m3
Carbon Monoxide: 98.54 μg/m3
Nitrogen Dioxide: 5.9 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 58.92 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:14 PM
Sunset: 8:28 PM
Daylight: 14 hrs 27 mins
Moonrise: 9:49 AM
Moon Transit: 4:22 PM
Moonset: 10:45 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:52 PM - 6:22 PM

Minor Periods

10:15 PM - 11:45 PM
9:19 AM - 10:49 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
80.7°F
53.9°F
66°F
60%
0 in
3%
0%
8.9 mph
10.6


Air Quality

AQI: 1 - Good
PM2.5: 9.97 μg/m3
PM10: 13.63 μg/m3
Carbon Monoxide: 102.75 μg/m3
Nitrogen Dioxide: 5.49 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 59.63 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:14 PM
Sunset: 8:28 PM
Daylight: 14 hrs 26 mins
Moonrise: 10:56 AM
Moon Transit: 5:07 PM
Moonset: 11:09 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:37 PM - 7:07 PM

Minor Periods

12:00 AM - 12:00 AM
10:26 AM - 11:56 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
78.7°F
55.8°F
66°F
62%
0 in
4%
0%
7.6 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 9.55 μg/m3
PM10: 12.75 μg/m3
Carbon Monoxide: 111 μg/m3
Nitrogen Dioxide: 9.05 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 40.33 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:14 PM
Sunset: 8:27 PM
Daylight: 14 hrs 25 mins
Moonrise: 12:00 AM
Moon Transit: 5:51 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

12:34 AM - 3:04 AM
5:21 PM - 7:51 PM

Minor Periods

11:30 AM - 1:00 PM
12:00 AM - 12:00 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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