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°F
Clear
Clear
56.6°F
57.2°F
87%
WNW 4.7 mph
9.9 mph
56.7°F
49.8°F
0 in
25%
9 mi
1022 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 73°F
L: 50°F
Mist
Sat
H: 54°F
L: 50°F
Mist
Sun
H: 54°F
L: 50°F
Overcast
Mon
H: 55°F
L: 50°F
Moderate rain
Tue
H: 56°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 17.25 μg/m3
PM10: 20.55 μg/m3
Carbon Monoxide: 208.85 μg/m3
Nitrogen Dioxide: 24.35 μg/m3
Sulphur Dioxide: 3.45 μg/m3
Ozone: 42 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:23 AM
Sunset: 5:38 PM
Daylight: 10 hrs 31 mins
Moonrise: 11:02 PM
Moon Transit: 3:48 AM
Moonset: 9:28 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.1%

Best Times for Fishing or Hunting

Major Periods

3:18 AM - 5:48 AM
11:14 AM - 1:44 PM

Minor Periods

12:00 AM - 12:00 AM
8:58 AM - 10:28 AM

Action Rating: 2 out of 5

High Surf Advisory issued February 6 at 8:45AM PST until February 7 at 9:00PM PST by NWS San Francisco CA

Effective: Fri February 6, 2026, 8:45 AM
Expires: Sat February 7, 2026, 8:45 AM

* WHAT...Large breaking waves of 17 to 22 feet, with continuing increased risk of sneaker waves and strong rip currents. * WHERE...Pacific Coast beaches. * WHEN...Until 9 PM PST Saturday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion can be expected. Sneaker waves can sweep across the shoreline without warning, pulling people into the sea from rocks, jetties and beaches. Large breaking waves can overpower swimmers resulting in significant physical injury and increase the risk of drowning.

Swimmers should remain out of the water due to dangerous surf conditions.
Friday, February 6, 2026

Weather Forecast

Sunny
73.2°F
49.6°F
59.3°F
69%
0 in
0%
0%
6.9 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 31.63 μg/m3
PM10: 35.81 μg/m3
Carbon Monoxide: 496.65 μg/m3
Nitrogen Dioxide: 53.14 μg/m3
Sulphur Dioxide: 7.91 μg/m3
Ozone: 12.6 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:23 AM
Sunset: 5:38 PM
Daylight: 10 hrs 31 mins
Moonrise: 11:02 PM
Moon Transit: 3:48 AM
Moonset: 9:28 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.1%

Best Times for Fishing or Hunting

Major Periods

3:18 AM - 5:48 AM
11:14 AM - 1:44 PM

Minor Periods

12:00 AM - 12:00 AM
8:58 AM - 10:28 AM

Action Rating: 2 out of 5

Saturday, February 7, 2026

Weather Forecast

Mist
54°F
49.6°F
51.5°F
94%
0 in
0%
0%
8.5 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 20.77 μg/m3
PM10: 25.2 μg/m3
Carbon Monoxide: 337.97 μg/m3
Nitrogen Dioxide: 31.72 μg/m3
Sulphur Dioxide: 5.19 μg/m3
Ozone: 41.8 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:23 AM
Sunset: 5:40 PM
Daylight: 10 hrs 33 mins
Moonrise: 12:02 AM
Moon Transit: 4:31 AM
Moonset: 9:52 AM
Moon Phase: Waning Gibbous
Moon Illumination: 63.7%

Best Times for Fishing or Hunting

Major Periods

4:01 AM - 6:31 AM
11:57 AM - 2:27 PM

Minor Periods

9:22 AM - 10:52 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, February 8, 2026

Weather Forecast

Mist
54.1°F
49.5°F
51.5°F
96%
0 in
0%
0%
9.4 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 13.61 μg/m3
PM10: 18.27 μg/m3
Carbon Monoxide: 173.17 μg/m3
Nitrogen Dioxide: 18.05 μg/m3
Sulphur Dioxide: 3.48 μg/m3
Ozone: 56.68 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:23 AM
Sunset: 5:41 PM
Daylight: 10 hrs 35 mins
Moonrise: 12:04 AM
Moon Transit: 5:14 AM
Moonset: 10:19 AM
Moon Phase: Last Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

4:44 AM - 7:14 AM
12:41 AM - 3:11 PM

Minor Periods

9:49 AM - 11:19 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, February 9, 2026

Weather Forecast

Overcast
54.9°F
49.8°F
52.6°F
90%
0 in
0%
0%
6 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 9.61 μg/m3
PM10: 12.96 μg/m3
Carbon Monoxide: 164.92 μg/m3
Nitrogen Dioxide: 14.4 μg/m3
Sulphur Dioxide: 3.31 μg/m3
Ozone: 60.16 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:23 AM
Sunset: 5:42 PM
Daylight: 10 hrs 37 mins
Moonrise: 1:05 AM
Moon Transit: 6:00 AM
Moonset: 10:50 AM
Moon Phase: Last Quarter
Moon Illumination: 41.2%

Best Times for Fishing or Hunting

Major Periods

5:30 AM - 8:00 AM
1:27 PM - 3:57 PM

Minor Periods

10:20 AM - 11:50 AM
12:35 AM - 2:05 AM

Action Rating: 2 out of 5

Tuesday, February 10, 2026

Weather Forecast

Moderate rain
55.6°F
49.4°F
52.5°F
80%
0.48 in
87%
0%
11.2 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 13.51 μg/m3
PM10: 16.26 μg/m3
Carbon Monoxide: 247.73 μg/m3
Nitrogen Dioxide: 24.17 μg/m3
Sulphur Dioxide: 3.92 μg/m3
Ozone: 52.23 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:23 AM
Sunset: 5:43 PM
Daylight: 10 hrs 39 mins
Moonrise: 2:06 AM
Moon Transit: 6:48 AM
Moonset: 11:26 AM
Moon Phase: Last Quarter
Moon Illumination: 30.3%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
2:16 PM - 4:46 PM

Minor Periods

10:56 AM - 12:26 AM
1:36 AM - 3:06 AM

Action Rating: 2 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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