Water Temperature of San Francisco Bay in San Mateo, CA

Current Water Temperature

57.2°F

Measurement Time: Wednesday, March 4, 2020, 11:45 PM PST

Temperature Locations

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Local Points of Interest

San Mateo-Hayward Bridge; Foster City, CA; Burlingame, CA; Hayward, CA

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San Francisco Bay

Station Name: SAN FRANCISCO BAY 2.8 MI N OF SAN MATEO BRIDGE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
San Francisco Bay
San Mateo, CA 94401
San Mateo County

GPS Coordinates: 37.63078889, -122.2432

Nearby Water Temperatures

Redwood Creek, Redwood City, CA (8.8 mi)
San Francisco Bay, Alameda, CA (10.2 mi)
San Francisco Bay, Menlo Park, CA (11.0 mi)
San Francisco Bay, San Francisco, CA (14.6 mi)
Coyote Creek, Alviso, CA (16.6 mi)
San Francisco Bay, San Francisco, CA (16.7 mi)
San Francisco Bay, San Francisco, CA (17.2 mi)
Rodeo Pond, Sausalito, CA (20.7 mi)
Rodeo Lagoon, Sausalito, CA (20.8 mi)
Rodeo Lagoon, Sausalito, CA (21.0 mi)
San Francisco Bay, Richmond, CA (22.3 mi)
Coyote Creek, San Jose, CA (22.5 mi)
San Francisco Bay, San Rafael, CA (23.8 mi)
Arroyo Valle, Livermore, CA (26.5 mi)
Arroyo Hondo, San Jose, CA (28.5 mi)

Weather for San Mateo, California

Current Weather

64.9°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 77%
Feels Like: 64.9°F
Wind: SW 4.5 mph
Wind Gusts: 5.5 mph
Pressure: 29.83 in
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 1

Five Day Weather Forecast

Overcast
Thu
H: 75°F
L: 59°F
Heavy rain
Fri
H: 73°F
L: 60°F
Overcast
Sat
H: 70°F
L: 60°F
Sunny
Sun
H: 74°F
L: 58°F
Sunny
Mon
H: 76°F
L: 58°F

Air Quality

AQI: 2 - Moderate
PM2.5: 23.5 μg/m3
PM10: 32.38 μg/m3
Carbon Monoxide: 296 μg/m3
Nitrogen Dioxide: 12.21 μg/m3
Sulphur Dioxide: 3.89 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:02 PM
Sunset: 7:11 PM
Daylight: 12 hrs 17 mins
Moonrise: 3:36 AM
Moon Transit: 10:50 AM
Moonset: 5:53 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

6:17 PM - 8:47 PM
10:20 AM - 12:50 AM

Minor Periods

5:23 PM - 6:53 PM
3:06 AM - 4:36 AM

Action Rating: 3 out of 5

Thursday, September 18, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 63.6°F
Average Humidity: 82%
Chance of Rain: 0%
Wind: 8.5 mph
UV Index: 1.4

Air Quality

AQI: 2 - Moderate
PM2.5: 23.3 μg/m3
PM10: 31.12 μg/m3
Carbon Monoxide: 306.73 μg/m3
Nitrogen Dioxide: 24.59 μg/m3
Sulphur Dioxide: 4.23 μg/m3
Ozone: 52.52 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:02 PM
Sunset: 7:11 PM
Daylight: 12 hrs 17 mins
Moonrise: 3:36 AM
Moon Transit: 10:50 AM
Moonset: 5:53 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

6:17 PM - 8:47 PM
10:20 AM - 12:50 AM

Minor Periods

5:23 PM - 6:53 PM
3:06 AM - 4:36 AM

Action Rating: 3 out of 5

Friday, September 19, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 65°F
Average Humidity: 85%
Chance of Rain: 88%
Wind: 8.1 mph
UV Index: 1.6

Air Quality

AQI: 2 - Moderate
PM2.5: 24.4 μg/m3
PM10: 31.99 μg/m3
Carbon Monoxide: 276.17 μg/m3
Nitrogen Dioxide: 25.82 μg/m3
Sulphur Dioxide: 6.65 μg/m3
Ozone: 55.8 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 1:02 PM
Sunset: 7:10 PM
Daylight: 12 hrs 15 mins
Moonrise: 4:43 AM
Moon Transit: 11:36 AM
Moonset: 6:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

7:02 PM - 9:32 PM
11:06 AM - 1:36 PM

Minor Periods

5:49 PM - 7:19 PM
4:13 AM - 5:43 AM

Action Rating: 4 out of 5

Saturday, September 20, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 63.6°F
Average Humidity: 85%
Chance of Rain: 0%
Wind: 8.9 mph
UV Index: 1.6

Air Quality

AQI: 2 - Moderate
PM2.5: 32.4 μg/m3
PM10: 40.79 μg/m3
Carbon Monoxide: 300.29 μg/m3
Nitrogen Dioxide: 38.36 μg/m3
Sulphur Dioxide: 7.5 μg/m3
Ozone: 47 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:02 PM
Sunset: 7:08 PM
Daylight: 12 hrs 13 mins
Moonrise: 5:46 AM
Moon Transit: 12:19 AM
Moonset: 6:42 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

7:44 PM - 10:14 PM
11:49 AM - 2:19 PM

Minor Periods

6:12 PM - 7:42 PM
5:16 AM - 6:46 AM

Action Rating: 3 out of 5

Sunday, September 21, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 64.2°F
Average Humidity: 74%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 1.6

Air Quality

AQI: 2 - Moderate
PM2.5: 23.85 μg/m3
PM10: 30.04 μg/m3
Carbon Monoxide: 274.69 μg/m3
Nitrogen Dioxide: 19.47 μg/m3
Sulphur Dioxide: 3.33 μg/m3
Ozone: 62.72 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:01 PM
Sunset: 7:07 PM
Daylight: 12 hrs 10 mins
Moonrise: 6:48 AM
Moon Transit: 1:00 PM
Moonset: 7:03 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

8:25 PM - 10:55 PM
12:30 AM - 3:00 PM

Minor Periods

6:33 PM - 8:03 PM
6:18 AM - 7:48 AM

Action Rating: 3 out of 5

Monday, September 22, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 65.1°F
Average Humidity: 71%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 29.36 μg/m3
PM10: 36.53 μg/m3
Carbon Monoxide: 332.72 μg/m3
Nitrogen Dioxide: 33.39 μg/m3
Sulphur Dioxide: 4.7 μg/m3
Ozone: 52 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:01 PM
Sunset: 7:05 PM
Daylight: 12 hrs 8 mins
Moonrise: 7:48 AM
Moon Transit: 1:40 PM
Moonset: 7:25 PM
Moon Phase: New
Moon Illumination: 2.9%

Best Times for Fishing or Hunting

Major Periods

9:06 PM - 11:36 PM
1:10 PM - 3:40 PM

Minor Periods

6:55 PM - 8:25 PM
7:18 AM - 8:48 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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