Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

70.9°F

Measurement Time: Friday, July 17, 2026, 10:45 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
Overcast
Overcast
59.5°F
55.8°F
82%
WSW 2.2 mph
3 mph
56.6°F
54.1°F
0 in
100%
9 mi
1017 mbar
0.3

Five Day Weather Forecast

Sunny
Sat
H: 78°F
L: 54°F
Sunny
Sun
H: 80°F
L: 56°F
Partly Cloudy
Mon
H: 82°F
L: 61°F
Sunny
Tue
H: 90°F
L: 63°F
Sunny
Wed
H: 85°F
L: 65°F

Air Quality

AQI: 1 - Good
PM2.5: 8.6 μg/m3
PM10: 11.3 μg/m3
Carbon Monoxide: 100 μg/m3
Nitrogen Dioxide: 7.5 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 45 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

Saturday, July 18, 2026

Weather Forecast

Sunny
77.6°F
54°F
62.1°F
77%
0 in
9%
0%
8.7 mph
10.4


Air Quality

AQI: 1 - Good
PM2.5: 8.72 μg/m3
PM10: 11.82 μg/m3
Carbon Monoxide: 99.79 μg/m3
Nitrogen Dioxide: 6.5 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 58.25 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
80.2°F
56.2°F
66.1°F
61%
0 in
4%
0%
8.3 mph
10.2


Air Quality

AQI: 1 - Good
PM2.5: 9.21 μg/m3
PM10: 12.14 μg/m3
Carbon Monoxide: 100.21 μg/m3
Nitrogen Dioxide: 8.01 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 62.67 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

Monday, July 20, 2026

Weather Forecast

Partly Cloudy
81.9°F
60.9°F
70.3°F
52%
0 in
4%
0%
9.2 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 11.66 μg/m3
PM10: 15.63 μg/m3
Carbon Monoxide: 104.21 μg/m3
Nitrogen Dioxide: 7.45 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 61.71 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:14 PM
Sunset: 8:27 PM
Daylight: 14 hrs 23 mins
Moonrise: 1:03 PM
Moon Transit: 6:34 PM
Moonset: 12:33 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

1:18 AM - 3:48 AM
6:04 PM - 8:34 PM

Minor Periods

12:33 AM - 2:03 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
90.3°F
62.9°F
75.4°F
46%
0 in
2%
0%
8.3 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 9.51 μg/m3
PM10: 12.75 μg/m3
Carbon Monoxide: 106.21 μg/m3
Nitrogen Dioxide: 7.12 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:14 PM
Sunset: 8:26 PM
Daylight: 14 hrs 22 mins
Moonrise: 2:05 PM
Moon Transit: 7:19 PM
Moonset: 12:59 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
6:49 PM - 9:19 PM

Minor Periods

1:35 PM - 3:05 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
84.9°F
65°F
73.6°F
64%
0 in
4%
0%
9.4 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 11.78 μg/m3
PM10: 15.93 μg/m3
Carbon Monoxide: 122 μg/m3
Nitrogen Dioxide: 9.2 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 46.67 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:15 PM
Sunset: 8:25 PM
Daylight: 14 hrs 20 mins
Moonrise: 3:07 PM
Moon Transit: 8:04 PM
Moonset: 12:26 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

2:46 AM - 5:16 AM
7:34 PM - 10:04 PM

Minor Periods

2:37 PM - 4:07 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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