Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

68.9°F

Measurement Time: Saturday, September 19, 2026, 2:45 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: Mostly Cloudy

Humidity: 92%

Wind: NW 8 mph

Dew Point: 57°F

Weather Forecast

Tonight
58°F - Mostly Cloudy

Sunday
62°F - Mostly Cloudy

Sunday Night
58°F - Mostly Cloudy

Monday
63°F - Mostly Sunny

Monday Night
58°F - Partly Cloudy

Tuesday
66°F - Mostly Sunny

Tuesday Night
57°F - Mostly Clear

Wednesday
73°F - Sunny

Wednesday Night
60°F - Mostly Clear

Thursday
76°F - Sunny

Thursday Night
60°F - Mostly Clear

Friday
71°F - Mostly Sunny

Friday Night
58°F - Partly Cloudy

Saturday
68°F - Mostly Sunny

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:02 PM
Sunset: 7:10 PM
Daylight: 12 hrs 16 mins

Moonrise: 3:26 PM
Moon Transit: 8:01 PM
Moonset: 12:43 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

2:39 AM - 5:09 AM
7:31 PM - 10:01 PM

Minor Periods

2:56 PM - 4:26 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: 6:54 AM
Sun Transit: 1:02 PM
Sunset: 7:10 PM
Daylight: 12 hrs 16 mins

Moonrise: 3:26 PM
Moon Transit: 8:01 PM
Moonset: 12:43 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

2:39 AM - 5:09 AM
7:31 PM - 10:01 PM

Minor Periods

2:56 PM - 4:26 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: 6:55 AM
Sun Transit: 1:01 PM
Sunset: 7:08 PM
Daylight: 12 hrs 13 mins

Moonrise: 4:07 PM
Moon Transit: 8:51 PM
Moonset: 12:40 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
8:21 PM - 10:51 PM

Minor Periods

3:37 PM - 5:07 PM
12:10 AM - 1:40 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: 6:55 AM
Sun Transit: 1:01 PM
Sunset: 7:08 PM
Daylight: 12 hrs 13 mins

Moonrise: 4:07 PM
Moon Transit: 8:51 PM
Moonset: 12:40 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
8:21 PM - 10:51 PM

Minor Periods

3:37 PM - 5:07 PM
12:10 AM - 1:40 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: 6:56 AM
Sun Transit: 1:01 PM
Sunset: 7:07 PM
Daylight: 12 hrs 11 mins

Moonrise: 4:42 PM
Moon Transit: 9:39 PM
Moonset: 1:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
9:09 PM - 11:39 PM

Minor Periods

4:12 PM - 5:42 PM
1:10 AM - 2:40 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: 6:56 AM
Sun Transit: 1:01 PM
Sunset: 7:07 PM
Daylight: 12 hrs 11 mins

Moonrise: 4:42 PM
Moon Transit: 9:39 PM
Moonset: 1:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
9:09 PM - 11:39 PM

Minor Periods

4:12 PM - 5:42 PM
1:10 AM - 2:40 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: 6:57 AM
Sun Transit: 1:01 PM
Sunset: 7:05 PM
Daylight: 12 hrs 8 mins

Moonrise: 5:11 PM
Moon Transit: 10:25 PM
Moonset: 2:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

5:07 AM - 7:37 AM
12:00 AM - 12:00 AM

Minor Periods

4:41 PM - 6:11 PM
2:13 AM - 3:43 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: 6:57 AM
Sun Transit: 1:01 PM
Sunset: 7:05 PM
Daylight: 12 hrs 8 mins

Moonrise: 5:11 PM
Moon Transit: 10:25 PM
Moonset: 2:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

5:07 AM - 7:37 AM
12:00 AM - 12:00 AM

Minor Periods

4:41 PM - 6:11 PM
2:13 AM - 3:43 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: 6:57 AM
Sun Transit: 1:00 PM
Sunset: 7:03 PM
Daylight: 12 hrs 6 mins

Moonrise: 5:38 PM
Moon Transit: 11:09 PM
Moonset: 3:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

5:52 AM - 8:22 AM
12:00 AM - 12:00 AM

Minor Periods

5:08 PM - 6:38 PM
3:16 AM - 4:46 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: 6:57 AM
Sun Transit: 1:00 PM
Sunset: 7:03 PM
Daylight: 12 hrs 6 mins

Moonrise: 5:38 PM
Moon Transit: 11:09 PM
Moonset: 3:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

5:52 AM - 8:22 AM
12:00 AM - 12:00 AM

Minor Periods

5:08 PM - 6:38 PM
3:16 AM - 4:46 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: 6:58 AM
Sun Transit: 1:00 PM
Sunset: 7:02 PM
Daylight: 12 hrs 4 mins

Moonrise: 6:03 PM
Moon Transit: 11:53 PM
Moonset: 4:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

6:36 AM - 9:06 AM
12:00 AM - 12:00 AM

Minor Periods

5:33 PM - 7:03 PM
4:20 AM - 5:50 AM

Action Rating: 4 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: 6:58 AM
Sun Transit: 1:00 PM
Sunset: 7:02 PM
Daylight: 12 hrs 4 mins

Moonrise: 6:03 PM
Moon Transit: 11:53 PM
Moonset: 4:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

6:36 AM - 9:06 AM
12:00 AM - 12:00 AM

Minor Periods

5:33 PM - 7:03 PM
4:20 AM - 5:50 AM

Action Rating: 4 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: 6:59 AM
Sun Transit: 1:00 PM
Sunset: 7:00 PM
Daylight: 12 hrs 1 mins

Moonrise: 6:28 PM
Moon Transit: 12:00 AM
Moonset: 5:54 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:20 AM - 9:50 AM

Minor Periods

5:58 PM - 7:28 PM
5:24 AM - 6:54 AM

Action Rating: 6 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: 6:59 AM
Sun Transit: 1:00 PM
Sunset: 7:00 PM
Daylight: 12 hrs 1 mins

Moonrise: 6:28 PM
Moon Transit: 12:00 AM
Moonset: 5:54 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:20 AM - 9:50 AM

Minor Periods

5:58 PM - 7:28 PM
5:24 AM - 6:54 AM

Action Rating: 6 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: 7:00 AM
Sun Transit: 1:00 PM
Sunset: 6:59 PM
Daylight: 11 hrs 59 mins

Moonrise: 6:53 PM
Moon Transit: 5:33 AM
Moonset: 6:59 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
5:03 AM - 7:33 AM

Minor Periods

6:23 PM - 7:53 PM
6:29 AM - 7:59 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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