Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

70.3°F

Measurement Time: Saturday, July 11, 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

63.3°F
Partly cloudy
Partly cloudy
63.3°F
57.2°F
83%
SW 2.2 mph
2.3 mph
58.4°F
54.7°F
0 in
75%
8 mi
1014 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 85°F
L: 56°F
Partly Cloudy
Mon
H: 80°F
L: 62°F
Sunny
Tue
H: 86°F
L: 58°F
Sunny
Wed
H: 84°F
L: 56°F
Sunny
Thu
H: 80°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 7.5 μg/m3
PM10: 9 μg/m3
Carbon Monoxide: 108 μg/m3
Nitrogen Dioxide: 15.5 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 16 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:14 PM
Sunset: 8:31 PM
Daylight: 14 hrs 33 mins
Moonrise: 3:37 AM
Moon Transit: 11:33 AM
Moonset: 7:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

7:08 PM - 9:38 PM
11:03 AM - 1:33 PM

Minor Periods

6:59 PM - 8:29 PM
3:07 AM - 4:37 AM

Action Rating: 3 out of 5

Small Craft Advisory issued July 11 at 8:02PM PDT until July 13 at 9:00AM PDT by NWS San Francisco CA

Effective: Sat July 11, 2026, 8:02 PM
Expires: Sun July 12, 2026, 4:15 AM

* WHAT...Northwest winds 10 to 20 kt. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 9 AM PDT Monday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Sunday, July 12, 2026

Weather Forecast

Sunny
84.8°F
56.1°F
66.5°F
66%
0 in
5%
0%
8.7 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 10.89 μg/m3
PM10: 14.18 μg/m3
Carbon Monoxide: 119.33 μg/m3
Nitrogen Dioxide: 12.75 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 53.25 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:14 PM
Sunset: 8:31 PM
Daylight: 14 hrs 33 mins
Moonrise: 3:37 AM
Moon Transit: 11:33 AM
Moonset: 7:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

7:08 PM - 9:38 PM
11:03 AM - 1:33 PM

Minor Periods

6:59 PM - 8:29 PM
3:07 AM - 4:37 AM

Action Rating: 3 out of 5

Monday, July 13, 2026

Weather Forecast

Partly Cloudy
79.8°F
62.2°F
68.9°F
49%
0 in
4%
0%
6.5 mph
9.2


Air Quality

AQI: 2 - Moderate
PM2.5: 15.55 μg/m3
PM10: 19.42 μg/m3
Carbon Monoxide: 141.38 μg/m3
Nitrogen Dioxide: 24.44 μg/m3
Sulphur Dioxide: 2.13 μg/m3
Ozone: 62.75 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:14 PM
Sunset: 8:30 PM
Daylight: 14 hrs 32 mins
Moonrise: 4:48 AM
Moon Transit: 12:40 AM
Moonset: 8:27 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

8:14 PM - 10:44 PM
12:10 AM - 2:40 PM

Minor Periods

7:57 PM - 9:27 PM
4:18 AM - 5:48 AM

Action Rating: 5 out of 5

Tuesday, July 14, 2026

Weather Forecast

Sunny
85.9°F
58.4°F
71.2°F
45%
0 in
1%
0%
9.2 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 15.35 μg/m3
PM10: 20.4 μg/m3
Carbon Monoxide: 134.29 μg/m3
Nitrogen Dioxide: 20.03 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 63.21 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:14 PM
Sunset: 8:30 PM
Daylight: 14 hrs 31 mins
Moonrise: 6:05 AM
Moon Transit: 1:43 PM
Moonset: 9:12 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

9:16 PM - 11:46 PM
1:13 PM - 3:43 PM

Minor Periods

8:42 PM - 10:12 PM
5:35 AM - 7:05 AM

Action Rating: 5 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
83.7°F
56.3°F
68.2°F
52%
0 in
2%
0%
9.4 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 14.07 μg/m3
PM10: 18.8 μg/m3
Carbon Monoxide: 116.47 μg/m3
Nitrogen Dioxide: 14.11 μg/m3
Sulphur Dioxide: 1.81 μg/m3
Ozone: 55 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
79.9°F
55.1°F
65.3°F
62%
0 in
4%
0%
9.6 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 11.4 μg/m3
PM10: 15.28 μg/m3
Carbon Monoxide: 123 μg/m3
Nitrogen Dioxide: 11.33 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 39.67 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

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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