Water Temperature of San Francisco Bay in Menlo Park, CA
Current Water Temperature
Measurement Time: Tuesday, September 16, 2025, 11:00 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, CASponsored Content
Station Name: SOUTH SAN FRANCISCO BAY AT DUMBARTON BRIDGE CA
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
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 (6.0 mi)
San Francisco Bay, San Mateo, CA (11.0 mi)
Coyote Creek, San Jose, CA (12.0 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 (33.0 mi)
Weather for Menlo Park, California
Current Weather

Humidity: 88%
Feels Like: 62.6°F
Wind: NNW 2.2 mph
Wind Gusts: 6.7 mph
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Wed
H: 92°F
L: 63°F

Thu
H: 75°F
L: 63°F

Fri
H: 87°F
L: 62°F

Sat
H: 80°F
L: 61°F

Sun
H: 84°F
L: 62°F
Air Quality
Nitrogen Dioxide: 21.83 μg/m3
Sulphur Dioxide: 12.58 μg/m3
Ozone: 125 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 7:12 PM
Daylight: 12 hrs 20 mins
Moon Transit: 10:00 AM
Moonset: 5:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%
Best Times for Fishing or Hunting
Major Periods
5:30 PM - 8:00 PM9:30 AM - 12:00 AM
Minor Periods
4:52 PM - 6:22 PM1:58 AM - 3:28 AM
Action Rating: 2 out of 5
Dense Fog Advisory issued September 17 at 3:39AM PDT until September 17 at 10:00AM PDT by NWS San Francisco CA
Effective: Wed September 17, 2025, 3:39 AM
Expires: Wed September 17, 2025, 10:00 AM
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Monterey Bay and the Big Sur Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, and San Francisco Peninsula Coast. * WHEN...Until 10 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Dense Fog Advisory issued September 17 at 3:39AM PDT until September 17 at 10:00AM PDT by NWS San Francisco CA
Effective: Wed September 17, 2025, 3:39 AM
Expires: Wed September 17, 2025, 10:00 AM
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Monterey Bay and the Big Sur Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, and San Francisco Peninsula Coast. * WHEN...Until 10 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Dense Fog Advisory issued September 17 at 3:39AM PDT until September 17 at 10:00AM PDT by NWS San Francisco CA
Effective: Wed September 17, 2025, 3:39 AM
Expires: Wed September 17, 2025, 10:00 AM
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Monterey Bay and the Big Sur Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, and San Francisco Peninsula Coast. * WHEN...Until 10 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Dense Fog Advisory issued September 17 at 3:39AM PDT until September 17 at 10:00AM PDT by NWS San Francisco CA
Effective: Wed September 17, 2025, 3:39 AM
Expires: Wed September 17, 2025, 10:00 AM
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Monterey Bay and the Big Sur Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, and San Francisco Peninsula Coast. * WHEN...Until 10 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Weather Forecast
Average Temperature: 74.7°F
Average Humidity: 56%
Wind: 7.4 mph
UV Index: 1.6
Air Quality
Nitrogen Dioxide: 66.92 μg/m3
Sulphur Dioxide: 13.07 μg/m3
Ozone: 68.04 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 7:12 PM
Daylight: 12 hrs 20 mins
Moon Transit: 10:00 AM
Moonset: 5:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%
Best Times for Fishing or Hunting
Major Periods
5:30 PM - 8:00 PM9:30 AM - 12:00 AM
Minor Periods
4:52 PM - 6:22 PM1:58 AM - 3:28 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 69.1°F
Average Humidity: 63%
Wind: 7.4 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 40.56 μg/m3
Sulphur Dioxide: 9.09 μg/m3
Ozone: 61.84 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 7:11 PM
Daylight: 12 hrs 17 mins
Moon Transit: 10:49 AM
Moonset: 5:52 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%
Best Times for Fishing or Hunting
Major Periods
6:18 PM - 8:48 PM10:19 AM - 12:49 AM
Minor Periods
5:22 PM - 6:52 PM3:06 AM - 4:36 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 72.4°F
Average Humidity: 63%
Wind: 7.8 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 34.82 μg/m3
Sulphur Dioxide: 8.29 μg/m3
Ozone: 60.12 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 7:09 PM
Daylight: 12 hrs 15 mins
Moon Transit: 11:35 AM
Moonset: 6:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.8%
Best Times for Fishing or Hunting
Major Periods
7:02 PM - 9:32 PM11:05 AM - 1:35 PM
Minor Periods
5:48 PM - 7:18 PM4:13 AM - 5:43 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 68.6°F
Average Humidity: 63%
Wind: 8.9 mph
UV Index: 1.6
Air Quality
Nitrogen Dioxide: 54.51 μg/m3
Sulphur Dioxide: 10.18 μg/m3
Ozone: 51.8 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 7:08 PM
Daylight: 12 hrs 13 mins
Moon Transit: 12:18 AM
Moonset: 6:41 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.3%
Best Times for Fishing or Hunting
Major Periods
7:45 PM - 10:15 PM11:48 AM - 2:18 PM
Minor Periods
6:11 PM - 7:41 PM5:16 AM - 6:46 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 70.6°F
Average Humidity: 56%
Wind: 8.1 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 36.64 μg/m3
Sulphur Dioxide: 8.05 μg/m3
Ozone: 52.31 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 7:06 PM
Daylight: 12 hrs 10 mins
Moon Transit: 1:00 PM
Moonset: 7:03 PM
Moon Phase: New
Moon Illumination: 0.3%
Best Times for Fishing or Hunting
Major Periods
8:26 PM - 10:56 PM12:30 AM - 3:00 PM
Minor Periods
6:33 PM - 8:03 PM6:18 AM - 7:48 AM
Action Rating: 3 out of 5