Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

70.3°F

Measurement Time: Monday, June 29, 2026, 5:45 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

59.5°F
Clear
Clear
59.5°F
55.8°F
82%
SW 3.6 mph
6.3 mph
55.8°F
51.4°F
0 in
0%
9 mi
1012 mbar
0

Five Day Weather Forecast

Sunny
Tue
H: 80°F
L: 54°F
Sunny
Wed
H: 78°F
L: 54°F
Sunny
Thu
H: 79°F
L: 53°F
Sunny
Fri
H: 80°F
L: 55°F
Sunny
Sat
H: 78°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 11.7 μg/m3
PM10: 14.5 μg/m3
Carbon Monoxide: 103 μg/m3
Nitrogen Dioxide: 24.4 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 20 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:12 PM
Sunset: 8:34 PM
Daylight: 14 hrs 43 mins
Moonrise: 9:34 PM
Moon Transit: 1:30 AM
Moonset: 6:10 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

1:00 AM - 3:30 AM
8:59 AM - 11:29 AM

Minor Periods

9:04 PM - 10:34 PM
5:40 AM - 7:10 AM

Action Rating: 4 out of 5

Small Craft Advisory issued June 29 at 2:31PM PDT until June 30 at 3:00AM PDT by NWS San Francisco CA

Effective: Mon June 29, 2026, 2:31 PM
Expires: Mon June 29, 2026, 10:45 PM

* WHAT...Northwest winds 10 to 20 kt. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 NM. * WHEN...Until 3 AM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued June 29 at 8:16PM PDT until June 30 at 3:00AM PDT by NWS San Francisco CA

Effective: Mon June 29, 2026, 8:16 PM
Expires: Tue June 30, 2026, 3:00 AM

* WHAT...Northwest winds 10 to 20 kt. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 NM. * WHEN...Until 3 AM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Tuesday, June 30, 2026

Weather Forecast

Sunny
80.3°F
54.3°F
63.7°F
69%
0 in
5%
0%
8.5 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 12.43 μg/m3
PM10: 16.96 μg/m3
Carbon Monoxide: 111.63 μg/m3
Nitrogen Dioxide: 11.17 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 59 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:12 PM
Sunset: 8:34 PM
Daylight: 14 hrs 43 mins
Moonrise: 9:34 PM
Moon Transit: 1:30 AM
Moonset: 6:10 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

1:00 AM - 3:30 AM
8:59 AM - 11:29 AM

Minor Periods

9:04 PM - 10:34 PM
5:40 AM - 7:10 AM

Action Rating: 4 out of 5

Wednesday, July 1, 2026

Weather Forecast

Sunny
77.6°F
53.9°F
64.1°F
64%
0 in
5%
0%
8.1 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 11.75 μg/m3
PM10: 17.02 μg/m3
Carbon Monoxide: 99.08 μg/m3
Nitrogen Dioxide: 5.63 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 62.79 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:12 PM
Sunset: 8:34 PM
Daylight: 14 hrs 43 mins
Moonrise: 10:09 PM
Moon Transit: 2:20 AM
Moonset: 7:11 AM
Moon Phase: Full
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

1:50 AM - 4:20 AM
9:48 AM - 12:18 AM

Minor Periods

9:39 PM - 11:09 PM
6:41 AM - 8:11 AM

Action Rating: 3 out of 5

Thursday, July 2, 2026

Weather Forecast

Sunny
78.7°F
52.8°F
63.6°F
66%
0 in
4%
0%
8.9 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 11.04 μg/m3
PM10: 15.9 μg/m3
Carbon Monoxide: 93.75 μg/m3
Nitrogen Dioxide: 5.06 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 61.58 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:12 PM
Sunset: 8:34 PM
Daylight: 14 hrs 42 mins
Moonrise: 10:38 PM
Moon Transit: 3:07 AM
Moonset: 8:13 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:37 AM - 5:07 AM
10:35 AM - 1:05 PM

Minor Periods

10:08 PM - 11:38 PM
7:43 AM - 9:13 AM

Action Rating: 2 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
79.5°F
55.2°F
65.5°F
64%
0 in
4%
0%
8.7 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 10.38 μg/m3
PM10: 14.35 μg/m3
Carbon Monoxide: 111.13 μg/m3
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 48.5 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:12 PM
Sunset: 8:34 PM
Daylight: 14 hrs 42 mins
Moonrise: 11:04 PM
Moon Transit: 3:53 AM
Moonset: 9:15 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:23 AM - 5:53 AM
11:20 AM - 1:50 PM

Minor Periods

12:00 AM - 12:00 AM
8:45 AM - 10:15 AM

Action Rating: 3 out of 5

Saturday, July 4, 2026

Weather Forecast

Sunny
77.5°F
55.4°F
64.9°F
67%
0 in
5%
0%
9.8 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 12.2 μg/m3
PM10: 16.1 μg/m3
Carbon Monoxide: 118.33 μg/m3
Nitrogen Dioxide: 12.85 μg/m3
Sulphur Dioxide: 1.98 μg/m3
Ozone: 31.83 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:13 PM
Sunset: 8:33 PM
Daylight: 14 hrs 41 mins
Moonrise: 12:04 AM
Moon Transit: 4:36 AM
Moonset: 10:18 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

4:06 AM - 6:36 AM
12:03 AM - 2:33 PM

Minor Periods

9:48 AM - 11:18 AM
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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