Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

69.3°F

Measurement Time: Thursday, October 1, 2026, 8:45 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

60°F

Conditions: Cloudy

Humidity: 90%

Wind: NW 2 mph

Dew Point: 57°F

Weather Forecast

Overnight
59°F - Cloudy

Friday
68°F - Mostly Cloudy

Friday Night
61°F - Partly Cloudy

Saturday
78°F - Sunny

Saturday Night
65°F - Mostly Clear

Sunday
76°F - Mostly Sunny

Sunday Night
64°F - Mostly Clear

Monday
71°F - Sunny

Monday Night
63°F - Clear

Tuesday
72°F - Sunny

Tuesday Night
63°F - Clear

Wednesday
74°F - Sunny

Wednesday Night
64°F - Mostly Clear

Thursday
73°F - Sunny

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:57 AM
Sunset: 6:50 PM
Daylight: 11 hrs 45 mins

Moonrise: 11:15 PM
Moon Transit: 6:05 AM
Moonset: 2:00 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
1:38 PM - 4:08 PM

Minor Periods

12:00 AM - 12:00 AM
1:30 PM - 3:00 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:05 AM
Sun Transit: 12:57 AM
Sunset: 6:50 PM
Daylight: 11 hrs 45 mins

Moonrise: 11:15 PM
Moon Transit: 6:05 AM
Moonset: 2:00 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
1:38 PM - 4:08 PM

Minor Periods

12:00 AM - 12:00 AM
1:30 PM - 3:00 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:05 AM
Sun Transit: 12:57 AM
Sunset: 6:50 PM
Daylight: 11 hrs 45 mins

Moonrise: 11:15 PM
Moon Transit: 6:05 AM
Moonset: 2:00 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
1:38 PM - 4:08 PM

Minor Periods

12:00 AM - 12:00 AM
1:30 PM - 3:00 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:05 AM
Sun Transit: 12:57 AM
Sunset: 6:50 PM
Daylight: 11 hrs 45 mins

Moonrise: 11:15 PM
Moon Transit: 6:05 AM
Moonset: 2:00 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
1:38 PM - 4:08 PM

Minor Periods

12:00 AM - 12:00 AM
1:30 PM - 3:00 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:06 AM
Sun Transit: 12:57 AM
Sunset: 6:49 PM
Daylight: 11 hrs 43 mins

Moonrise: 12:15 AM
Moon Transit: 7:07 AM
Moonset: 2:54 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:37 AM - 9:07 AM
2:40 PM - 5:10 PM

Minor Periods

2:24 PM - 3:54 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:06 AM
Sun Transit: 12:57 AM
Sunset: 6:49 PM
Daylight: 11 hrs 43 mins

Moonrise: 12:15 AM
Moon Transit: 7:07 AM
Moonset: 2:54 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:37 AM - 9:07 AM
2:40 PM - 5:10 PM

Minor Periods

2:24 PM - 3:54 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:07 AM
Sun Transit: 12:57 AM
Sunset: 6:47 PM
Daylight: 11 hrs 40 mins

Moonrise: 12:26 AM
Moon Transit: 8:07 AM
Moonset: 3:38 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:37 AM - 10:07 AM
3:38 PM - 6:08 PM

Minor Periods

3:08 PM - 4:38 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:07 AM
Sun Transit: 12:57 AM
Sunset: 6:47 PM
Daylight: 11 hrs 40 mins

Moonrise: 12:26 AM
Moon Transit: 8:07 AM
Moonset: 3:38 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:37 AM - 10:07 AM
3:38 PM - 6:08 PM

Minor Periods

3:08 PM - 4:38 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:08 AM
Sun Transit: 12:56 AM
Sunset: 6:46 PM
Daylight: 11 hrs 38 mins

Moonrise: 1:39 AM
Moon Transit: 9:02 AM
Moonset: 4:15 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:32 AM - 11:02 AM
4:32 PM - 7:02 PM

Minor Periods

3:45 PM - 5:15 PM
1:09 AM - 2:39 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:08 AM
Sun Transit: 12:56 AM
Sunset: 6:46 PM
Daylight: 11 hrs 38 mins

Moonrise: 1:39 AM
Moon Transit: 9:02 AM
Moonset: 4:15 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:32 AM - 11:02 AM
4:32 PM - 7:02 PM

Minor Periods

3:45 PM - 5:15 PM
1:09 AM - 2:39 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:08 AM
Sun Transit: 12:56 AM
Sunset: 6:44 PM
Daylight: 11 hrs 36 mins

Moonrise: 2:51 AM
Moon Transit: 9:53 AM
Moonset: 4:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

5:22 PM - 7:52 PM
9:23 AM - 11:53 AM

Minor Periods

4:15 PM - 5:45 PM
2:21 AM - 3:51 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:08 AM
Sun Transit: 12:56 AM
Sunset: 6:44 PM
Daylight: 11 hrs 36 mins

Moonrise: 2:51 AM
Moon Transit: 9:53 AM
Moonset: 4:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

5:22 PM - 7:52 PM
9:23 AM - 11:53 AM

Minor Periods

4:15 PM - 5:45 PM
2:21 AM - 3:51 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:09 AM
Sun Transit: 12:56 AM
Sunset: 6:43 PM
Daylight: 11 hrs 33 mins

Moonrise: 4:01 AM
Moon Transit: 10:41 AM
Moonset: 5:12 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

6:09 PM - 8:39 PM
10:11 AM - 12:41 AM

Minor Periods

4:42 PM - 6:12 PM
3:31 AM - 5:01 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:09 AM
Sun Transit: 12:56 AM
Sunset: 6:43 PM
Daylight: 11 hrs 33 mins

Moonrise: 4:01 AM
Moon Transit: 10:41 AM
Moonset: 5:12 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

6:09 PM - 8:39 PM
10:11 AM - 12:41 AM

Minor Periods

4:42 PM - 6:12 PM
3:31 AM - 5:01 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 7:10 AM
Sun Transit: 12:55 AM
Sunset: 6:41 PM
Daylight: 11 hrs 31 mins

Moonrise: 5:08 AM
Moon Transit: 11:27 AM
Moonset: 5:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

6:55 PM - 9:25 PM
10:57 AM - 1:27 PM

Minor Periods

5:06 PM - 6:36 PM
4:38 AM - 6:08 AM

Action Rating: 4 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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