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

57.9°F
Partly cloudy
Partly cloudy
55.7°F
58.7°F
90%
S 10.7 mph
15.5 mph
57.6°F
53.2°F
0 in
75%
9 mi
1013 mbar
0.9

Five Day Weather Forecast

Moderate rain
Thu
H: 60°F
L: 50°F
Moderate rain
Fri
H: 57°F
L: 54°F
Heavy rain
Sat
H: 61°F
L: 55°F
Heavy rain
Sun
H: 57°F
L: 54°F
Patchy rain nearby
Mon
H: 58°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 7.85 μg/m3
PM10: 10.15 μg/m3
Carbon Monoxide: 208.85 μg/m3
Nitrogen Dioxide: 18.25 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 61 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:12 AM
Sunset: 5:01 PM
Daylight: 9 hrs 38 mins
Moonrise: 3:06 PM
Moon Transit: 11:03 PM
Moonset: 5:53 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

5:30 AM - 8:00 AM
12:00 AM - 12:00 AM

Minor Periods

2:36 PM - 4:06 PM
5:23 AM - 6:53 AM

Action Rating: 2 out of 5

Wind Advisory issued January 1 at 2:06AM PST until January 3 at 1:00PM PST by NWS San Francisco CA

Effective: Thu January 1, 2026, 2:06 AM
Expires: Thu January 1, 2026, 2:00 PM

* WHAT...South winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...The Central Coast, The Salinas and Carmel Valleys and Hollister Area, The Marin Hills, Western Sonoma County Hills, The Santa Cruz Mountains, San Francisco, North Bay Interior Mountains, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, and East Bay Hills. * WHEN...From 1 PM Friday to 1 PM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.


Coastal Flood Advisory issued January 1 at 5:10AM PST until January 4 at 2:00PM PST by NWS San Francisco CA

Effective: Thu January 1, 2026, 5:10 AM
Expires: Thu January 1, 2026, 2:00 PM

* WHAT...Up to 2.5 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...San Francisco Bay and San Pablo Bay shoreline, Monterey Bay shoreline, and the Pacific Coast. * WHEN...Until 2 PM PST Sunday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be: 2.0 ft above normal (7.8 ft MLLW) at 8:41 AM Thursday 1/1 2.2 ft above normal (8.0 ft MLLW) at 9:34 AM Friday 1/2 2.5 ft above normal (8.30 ft MLLW) at 10:26 AM Saturday 1/3 1.8 ft above normal (7.6 ft MLLW) at 11:18 AM Sunday 1/4 These predictions include up to 1.3 feet of storm surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Thursday, January 1, 2026

Weather Forecast

Moderate rain
59.9°F
50.4°F
54.7°F
92%
0.59 in
88%
0%
11.2 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 11.8 μg/m3
PM10: 12.74 μg/m3
Carbon Monoxide: 299.25 μg/m3
Nitrogen Dioxide: 25.25 μg/m3
Sulphur Dioxide: 3.24 μg/m3
Ozone: 37.52 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:12 AM
Sunset: 5:01 PM
Daylight: 9 hrs 38 mins
Moonrise: 3:06 PM
Moon Transit: 11:03 PM
Moonset: 5:53 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

5:30 AM - 8:00 AM
12:00 AM - 12:00 AM

Minor Periods

2:36 PM - 4:06 PM
5:23 AM - 6:53 AM

Action Rating: 2 out of 5

Friday, January 2, 2026

Weather Forecast

Moderate rain
56.8°F
54.3°F
55.6°F
87%
0.59 in
85%
0%
16.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 6.83 μg/m3
PM10: 9.67 μg/m3
Carbon Monoxide: 192.57 μg/m3
Nitrogen Dioxide: 11.76 μg/m3
Sulphur Dioxide: 2.29 μg/m3
Ozone: 69.68 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:13 AM
Sunset: 5:02 PM
Daylight: 9 hrs 38 mins
Moonrise: 4:15 PM
Moon Transit: 12:00 AM
Moonset: 7:02 AM
Moon Phase: Full
Moon Illumination: 99.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:37 AM - 9:07 AM

Minor Periods

3:45 PM - 5:15 PM
6:32 AM - 8:02 AM

Action Rating: 4 out of 5

Saturday, January 3, 2026

Weather Forecast

Heavy rain
61.3°F
55°F
57.2°F
88%
0.86 in
88%
0%
20.4 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 8.52 μg/m3
PM10: 14.39 μg/m3
Carbon Monoxide: 147.13 μg/m3
Nitrogen Dioxide: 5.9 μg/m3
Sulphur Dioxide: 1.88 μg/m3
Ozone: 82.52 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:13 AM
Sunset: 5:03 PM
Daylight: 9 hrs 39 mins
Moonrise: 5:29 PM
Moon Transit: 12:10 AM
Moonset: 8:00 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:43 AM - 10:13 AM

Minor Periods

4:59 PM - 6:29 PM
7:30 AM - 9:00 AM

Action Rating: 6 out of 5

Sunday, January 4, 2026

Weather Forecast

Heavy rain
56.9°F
53.6°F
56.3°F
88%
1.21 in
72%
0%
20.1 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 6.69 μg/m3
PM10: 9.79 μg/m3
Carbon Monoxide: 147.78 μg/m3
Nitrogen Dioxide: 6.57 μg/m3
Sulphur Dioxide: 1.89 μg/m3
Ozone: 81.4 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:14 AM
Sunset: 5:04 PM
Daylight: 9 hrs 40 mins
Moonrise: 6:46 PM
Moon Transit: 1:13 AM
Moonset: 8:46 AM
Moon Phase: Full
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

12:43 AM - 3:13 AM
8:44 AM - 11:14 AM

Minor Periods

6:16 PM - 7:46 PM
8:16 AM - 9:46 AM

Action Rating: 3 out of 5

Monday, January 5, 2026

Weather Forecast

Patchy rain nearby
58.1°F
53.1°F
55°F
85%
0.15 in
85%
0%
23.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 7.38 μg/m3
PM10: 10.53 μg/m3
Carbon Monoxide: 154.43 μg/m3
Nitrogen Dioxide: 11.2 μg/m3
Sulphur Dioxide: 2.46 μg/m3
Ozone: 72.85 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:14 AM
Sunset: 5:05 PM
Daylight: 9 hrs 41 mins
Moonrise: 7:59 PM
Moon Transit: 2:10 AM
Moonset: 9:23 AM
Moon Phase: Full
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

1:40 AM - 4:10 AM
9:39 AM - 12:09 AM

Minor Periods

7:29 PM - 8:59 PM
8:53 AM - 10:23 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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