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

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

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 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 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

57.6°F
Partly Cloudy
Partly Cloudy
56.6°F
53.6°F
88%
WSW 6.3 mph
9 mph
53.6°F
50.4°F
0 in
25%
9 mi
1017 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 69°F
L: 52°F
Sunny
Fri
H: 67°F
L: 54°F
Sunny
Sat
H: 74°F
L: 54°F
Partly Cloudy
Sun
H: 73°F
L: 56°F
Sunny
Mon
H: 73°F
L: 54°F

Air Quality

AQI: 1 - Good
PM2.5: 7.8 μg/m3
PM10: 11.9 μg/m3
Carbon Monoxide: 89 μg/m3
Nitrogen Dioxide: 7.1 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 42 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:14 PM
Sunset: 8:33 PM
Daylight: 14 hrs 37 mins
Moonrise: 1:13 AM
Moon Transit: 8:27 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:57 AM - 10:27 AM
3:56 PM - 6:26 PM

Minor Periods

3:23 PM - 4:53 PM
12:43 AM - 2:13 AM

Action Rating: 2 out of 5

Small Craft Advisory issued July 8 at 1:57PM PDT until July 10 at 3:00AM PDT by NWS San Francisco CA

Effective: Wed July 8, 2026, 1:57 PM
Expires: Wed July 8, 2026, 10:00 PM

* WHAT...Northwest winds 10 to 20 kt with 30 kt gusts. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 NM. * WHEN...Until 3 AM PDT Friday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued July 8 at 8:58PM PDT until July 10 at 3:00AM PDT by NWS San Francisco CA

Effective: Wed July 8, 2026, 8:58 PM
Expires: Thu July 9, 2026, 5:00 AM

* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 NM. * WHEN...Until 3 AM PDT Friday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Thursday, July 9, 2026

Weather Forecast

Sunny
68.9°F
52.2°F
59.6°F
79%
0 in
11%
0%
10.7 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 10.47 μg/m3
PM10: 15.92 μg/m3
Carbon Monoxide: 89.75 μg/m3
Nitrogen Dioxide: 7.69 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 43.79 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:14 PM
Sunset: 8:33 PM
Daylight: 14 hrs 37 mins
Moonrise: 1:13 AM
Moon Transit: 8:27 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:57 AM - 10:27 AM
3:56 PM - 6:26 PM

Minor Periods

3:23 PM - 4:53 PM
12:43 AM - 2:13 AM

Action Rating: 2 out of 5

Friday, July 10, 2026

Weather Forecast

Sunny
67.2°F
54.2°F
59.8°F
78%
0 in
9%
0%
10.5 mph
10.2


Air Quality

AQI: 1 - Good
PM2.5: 12.43 μg/m3
PM10: 19.22 μg/m3
Carbon Monoxide: 90.04 μg/m3
Nitrogen Dioxide: 6.32 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 45.83 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:14 PM
Sunset: 8:33 PM
Daylight: 14 hrs 36 mins
Moonrise: 1:51 AM
Moon Transit: 9:24 AM
Moonset: 5:08 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:54 AM - 11:24 AM
4:56 PM - 7:26 PM

Minor Periods

4:38 PM - 6:08 PM
1:21 AM - 2:51 AM

Action Rating: 2 out of 5

Saturday, July 11, 2026

Weather Forecast

Sunny
74.2°F
54°F
62.4°F
73%
0 in
8%
0%
10.3 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 10.28 μg/m3
PM10: 15.69 μg/m3
Carbon Monoxide: 97.67 μg/m3
Nitrogen Dioxide: 7.83 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 35.71 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:14 PM
Sunset: 8:32 PM
Daylight: 14 hrs 35 mins
Moonrise: 2:38 AM
Moon Transit: 10:27 AM
Moonset: 6:23 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

6:00 PM - 8:30 PM
9:57 AM - 12:27 AM

Minor Periods

5:53 PM - 7:23 PM
2:08 AM - 3:38 AM

Action Rating: 3 out of 5

Sunday, July 12, 2026

Weather Forecast

Partly Cloudy
73.1°F
55.8°F
62.9°F
67%
0 in
7%
0%
9.6 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 11.65 μg/m3
PM10: 17.93 μg/m3
Carbon Monoxide: 96.13 μg/m3
Nitrogen Dioxide: 8.15 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 43.54 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:14 PM
Sunset: 8:32 PM
Daylight: 14 hrs 34 mins
Moonrise: 3:37 AM
Moon Transit: 11:34 AM
Moonset: 7:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

7:07 PM - 9:37 PM
11:04 AM - 1:34 PM

Minor Periods

7:00 PM - 8:30 PM
3:07 AM - 4:37 AM

Action Rating: 3 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
73.1°F
54.1°F
62.8°F
66%
0 in
6%
0%
9.6 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 13.07 μg/m3
PM10: 19.53 μg/m3
Carbon Monoxide: 103.5 μg/m3
Nitrogen Dioxide: 14.28 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 35 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:14 PM
Sunset: 8:31 PM
Daylight: 14 hrs 33 mins
Moonrise: 4:48 AM
Moon Transit: 12:40 AM
Moonset: 8:28 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

8:13 PM - 10:43 PM
12:10 AM - 2:40 PM

Minor Periods

7:58 PM - 9:28 PM
4:18 AM - 5:48 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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