Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

70.3°F

Measurement Time: Friday, September 4, 2026, 8:45 AM 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

58°F
Clear
Clear
88%
NW 21 mph
55°F

Weather Forecast

Mostly Clear
Tonight
56°F - Mostly Clear
Mostly Sunny
Saturday
62°F - Mostly Sunny
Partly Cloudy
Saturday Night
56°F - Partly Cloudy
Mostly Sunny
Sunday
61°F - Mostly Sunny
Mostly Clear
Sunday Night
55°F - Mostly Clear
Sunny
Labor Day
68°F - Sunny
Mostly Clear
Monday Night
59°F - Mostly Clear
Mostly Sunny
Tuesday
72°F - Mostly Sunny
Slight Chance Light Rain
Tuesday Night
61°F - Slight Chance Light Rain
Slight Chance Light Rain
Wednesday
69°F - Slight Chance Light Rain
Slight Chance Light Rain
Wednesday Night
63°F - Slight Chance Light Rain
Slight Chance Light Rain
Thursday
70°F - Slight Chance Light Rain
Partly Cloudy
Thursday Night
61°F - Partly Cloudy
Mostly Sunny
Friday
67°F - Mostly Sunny

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:07 PM
Sunset: 7:32 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:16 AM
Moon Transit: 7:08 AM
Moonset: 3:03 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:38 AM - 9:08 AM
2:41 PM - 5:11 PM

Minor Periods

2:33 PM - 4:03 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:07 PM
Sunset: 7:32 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:16 AM
Moon Transit: 7:08 AM
Moonset: 3:03 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:38 AM - 9:08 AM
2:41 PM - 5:11 PM

Minor Periods

2:33 PM - 4:03 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:07 PM
Sunset: 7:31 PM
Daylight: 12 hrs 48 mins
Moonrise: 12:15 AM
Moon Transit: 8:11 AM
Moonset: 4:05 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:41 AM - 10:11 AM
3:44 PM - 6:14 PM

Minor Periods

3:35 PM - 5:05 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:07 PM
Sunset: 7:31 PM
Daylight: 12 hrs 48 mins
Moonrise: 12:15 AM
Moon Transit: 8:11 AM
Moonset: 4:05 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:41 AM - 10:11 AM
3:44 PM - 6:14 PM

Minor Periods

3:35 PM - 5:05 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:06 PM
Sunset: 7:29 PM
Daylight: 12 hrs 46 mins
Moonrise: 1:23 AM
Moon Transit: 9:13 AM
Moonset: 4:57 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:43 AM - 11:13 AM
4:46 PM - 7:16 PM

Minor Periods

4:27 PM - 5:57 PM
12:53 AM - 2:23 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:06 PM
Sunset: 7:29 PM
Daylight: 12 hrs 46 mins
Moonrise: 1:23 AM
Moon Transit: 9:13 AM
Moonset: 4:57 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:43 AM - 11:13 AM
4:46 PM - 7:16 PM

Minor Periods

4:27 PM - 5:57 PM
12:53 AM - 2:23 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:06 PM
Sunset: 7:28 PM
Daylight: 12 hrs 44 mins
Moonrise: 2:37 AM
Moon Transit: 10:13 AM
Moonset: 5:39 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

5:44 PM - 8:14 PM
9:43 AM - 12:13 AM

Minor Periods

5:09 PM - 6:39 PM
2:07 AM - 3:37 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:06 PM
Sunset: 7:28 PM
Daylight: 12 hrs 44 mins
Moonrise: 2:37 AM
Moon Transit: 10:13 AM
Moonset: 5:39 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

5:44 PM - 8:14 PM
9:43 AM - 12:13 AM

Minor Periods

5:09 PM - 6:39 PM
2:07 AM - 3:37 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:06 PM
Sunset: 7:26 PM
Daylight: 12 hrs 41 mins
Moonrise: 3:51 AM
Moon Transit: 11:08 AM
Moonset: 6:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

6:38 PM - 9:08 PM
10:38 AM - 1:08 PM

Minor Periods

5:44 PM - 7:14 PM
3:21 AM - 4:51 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:06 PM
Sunset: 7:26 PM
Daylight: 12 hrs 41 mins
Moonrise: 3:51 AM
Moon Transit: 11:08 AM
Moonset: 6:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

6:38 PM - 9:08 PM
10:38 AM - 1:08 PM

Minor Periods

5:44 PM - 7:14 PM
3:21 AM - 4:51 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 1:05 PM
Sunset: 7:25 PM
Daylight: 12 hrs 39 mins
Moonrise: 5:05 AM
Moon Transit: 12:00 AM
Moonset: 6:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

7:28 PM - 9:58 PM
11:30 AM - 2:00 PM

Minor Periods

6:14 PM - 7:44 PM
4:35 AM - 6:05 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 1:05 PM
Sunset: 7:25 PM
Daylight: 12 hrs 39 mins
Moonrise: 5:05 AM
Moon Transit: 12:00 AM
Moonset: 6:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

7:28 PM - 9:58 PM
11:30 AM - 2:00 PM

Minor Periods

6:14 PM - 7:44 PM
4:35 AM - 6:05 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 1:05 PM
Sunset: 7:23 PM
Daylight: 12 hrs 37 mins
Moonrise: 6:16 AM
Moon Transit: 12:48 AM
Moonset: 7:10 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

8:16 PM - 10:46 PM
12:18 AM - 2:48 PM

Minor Periods

6:40 PM - 8:10 PM
5:46 AM - 7:16 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 1:05 PM
Sunset: 7:23 PM
Daylight: 12 hrs 37 mins
Moonrise: 6:16 AM
Moon Transit: 12:48 AM
Moonset: 7:10 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

8:16 PM - 10:46 PM
12:18 AM - 2:48 PM

Minor Periods

6:40 PM - 8:10 PM
5:46 AM - 7:16 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:05 PM
Sunset: 7:22 PM
Daylight: 12 hrs 34 mins
Moonrise: 7:23 AM
Moon Transit: 1:34 PM
Moonset: 7:35 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

9:01 PM - 11:31 PM
1:04 PM - 3:34 PM

Minor Periods

7:05 PM - 8:35 PM
6:53 AM - 8:23 AM

Action Rating: 5 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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