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

62.8°F
Partly cloudy
Partly cloudy
62.8°F
61.7°F
55%
S 10.1 mph
15.5 mph
61.8°F
47.1°F
0 in
75%
9 mi
1025 mbar
0

Five Day Weather Forecast

Sunny
Tue
H: 63°F
L: 42°F
Patchy rain nearby
Wed
H: 54°F
L: 50°F
Mist
Thu
H: 58°F
L: 42°F
Mist
Fri
H: 63°F
L: 40°F
Overcast
Sat
H: 64°F
L: 51°F

Air Quality

AQI: 2 - Moderate
PM2.5: 10.95 μg/m3
PM10: 15.05 μg/m3
Carbon Monoxide: 193.85 μg/m3
Nitrogen Dioxide: 10.45 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 12:21 AM
Sunset: 5:27 PM
Daylight: 10 hrs 11 mins
Moonrise: 12:01 AM
Moon Transit: 7:43 PM
Moonset: 2:20 AM
Moon Phase: First Quarter
Moon Illumination: 68.0%

Best Times for Fishing or Hunting

Major Periods

2:14 AM - 4:44 AM
7:13 PM - 9:43 PM

Minor Periods

11:31 AM - 1:01 PM
1:50 AM - 3:20 AM

Action Rating: 2 out of 5

Beach Hazards Statement issued January 27 at 2:44AM PST until January 30 at 9:00AM PST by NWS San Francisco CA

Effective: Tue January 27, 2026, 2:44 AM
Expires: Tue January 27, 2026, 9:00 PM

* WHAT...Long period westerly swell will result in strong rip currents, sneaker waves, and breaking waves of up to 19 feet can be expected. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...From Wednesday evening through Friday morning. * IMPACTS...Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves.

Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.
Tuesday, January 27, 2026

Weather Forecast

Sunny
63°F
42.1°F
51.1°F
75%
0 in
0%
0%
11.4 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 24.01 μg/m3
PM10: 26.93 μg/m3
Carbon Monoxide: 454.57 μg/m3
Nitrogen Dioxide: 38.39 μg/m3
Sulphur Dioxide: 5.57 μg/m3
Ozone: 29.08 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 12:21 AM
Sunset: 5:27 PM
Daylight: 10 hrs 11 mins
Moonrise: 12:01 AM
Moon Transit: 7:43 PM
Moonset: 2:20 AM
Moon Phase: First Quarter
Moon Illumination: 68.0%

Best Times for Fishing or Hunting

Major Periods

2:14 AM - 4:44 AM
7:13 PM - 9:43 PM

Minor Periods

11:31 AM - 1:01 PM
1:50 AM - 3:20 AM

Action Rating: 2 out of 5

Wednesday, January 28, 2026

Weather Forecast

Patchy rain nearby
54°F
50.2°F
52.6°F
93%
0.01 in
74%
0%
8.9 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 15.04 μg/m3
PM10: 19.75 μg/m3
Carbon Monoxide: 188.49 μg/m3
Nitrogen Dioxide: 19.85 μg/m3
Sulphur Dioxide: 4.37 μg/m3
Ozone: 55.92 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:21 AM
Sunset: 5:28 PM
Daylight: 10 hrs 13 mins
Moonrise: 12:52 AM
Moon Transit: 8:46 PM
Moonset: 3:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

3:15 AM - 5:45 AM
8:16 PM - 10:46 PM

Minor Periods

12:22 AM - 1:52 PM
3:04 AM - 4:34 AM

Action Rating: 2 out of 5

Thursday, January 29, 2026

Weather Forecast

Mist
57.6°F
41.5°F
48.5°F
87%
0 in
0%
0%
5.8 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 20.8 μg/m3
PM10: 23.21 μg/m3
Carbon Monoxide: 284.41 μg/m3
Nitrogen Dioxide: 41.66 μg/m3
Sulphur Dioxide: 6.18 μg/m3
Ozone: 25.4 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:22 AM
Sunset: 5:30 PM
Daylight: 10 hrs 15 mins
Moonrise: 1:53 PM
Moon Transit: 9:50 PM
Moonset: 4:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
9:20 PM - 11:50 PM

Minor Periods

1:23 PM - 2:53 PM
4:14 AM - 5:44 AM

Action Rating: 3 out of 5

Friday, January 30, 2026

Weather Forecast

Mist
63°F
39.6°F
50.4°F
79%
0 in
0%
0%
6.9 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 22.76 μg/m3
PM10: 25.17 μg/m3
Carbon Monoxide: 413.66 μg/m3
Nitrogen Dioxide: 53.99 μg/m3
Sulphur Dioxide: 6.96 μg/m3
Ozone: 11.4 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:22 AM
Sunset: 5:31 PM
Daylight: 10 hrs 17 mins
Moonrise: 3:04 PM
Moon Transit: 10:54 PM
Moonset: 5:45 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

5:23 AM - 7:53 AM
12:00 AM - 12:00 AM

Minor Periods

2:34 PM - 4:04 PM
5:15 AM - 6:45 AM

Action Rating: 3 out of 5

Saturday, January 31, 2026

Weather Forecast

Overcast
63.5°F
50.8°F
55.7°F
68%
0 in
0%
0%
4.5 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 29.53 μg/m3
PM10: 32.39 μg/m3
Carbon Monoxide: 619.58 μg/m3
Nitrogen Dioxide: 48.63 μg/m3
Sulphur Dioxide: 7.27 μg/m3
Ozone: 2.62 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:22 AM
Sunset: 5:32 PM
Daylight: 10 hrs 19 mins
Moonrise: 4:19 PM
Moon Transit: 11:53 PM
Moonset: 6:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%

Best Times for Fishing or Hunting

Major Periods

6:25 AM - 8:55 AM
12:00 AM - 12:00 AM

Minor Periods

3:49 PM - 5:19 PM
6:06 AM - 7:36 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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