Water Temperature of San Francisco Bay in San Mateo, CA

Current Water Temperature

32.0°F

Measurement Time: Wednesday, June 24, 2026, 5:12 PM PDT

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
57.7°F
57.2°F
84%
WSW 4.7 mph
6.6 mph
57.1°F
55.9°F
0 in
75%
9 mi
1015 mbar
0

Five Day Weather Forecast

Partly Cloudy
Thu
H: 72°F
L: 56°F
Patchy rain nearby
Fri
H: 66°F
L: 56°F
Patchy rain nearby
Sat
H: 63°F
L: 55°F
Sunny
Sun
H: 67°F
L: 51°F
Sunny
Mon
H: 72°F
L: 53°F

Air Quality

PM2.5: 9.6 μg/m3
PM10: 14 μg/m3
Carbon Monoxide: 96 μg/m3
Nitrogen Dioxide: 5.2 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 70 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:11 PM
Sunset: 8:35 PM
Daylight: 14 hrs 46 mins
Moonrise: 5:16 PM
Moon Transit: 10:09 PM
Moonset: 2:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

4:49 AM - 7:19 AM
12:00 AM - 12:00 AM

Minor Periods

4:46 PM - 6:16 PM
1:55 AM - 3:25 AM

Action Rating: 2 out of 5

Small Craft Advisory issued June 24 at 2:16PM PDT until June 26 at 9:00AM PDT by NWS San Francisco CA

Effective: Wed June 24, 2026, 2:16 PM
Expires: Wed June 24, 2026, 10:30 PM

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and choppy waters expected. * WHERE...San Francisco Bay South of the Bay Bridge. * WHEN...From 3 PM Thursday to 9 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 June 24 at 8:10PM PDT until June 26 at 9:00AM PDT by NWS San Francisco CA

Effective: Wed June 24, 2026, 8:10 PM
Expires: Thu June 25, 2026, 4:15 AM

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and choppy waters expected. * WHERE...San Francisco Bay South of the Bay Bridge. * WHEN...From 3 PM Thursday to 9 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, June 25, 2026

Weather Forecast

Partly Cloudy
72.3°F
55.8°F
61.1°F
82%
0 in
14%
0%
13.6 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 12.92 μg/m3
PM10: 19.48 μg/m3
Carbon Monoxide: 102.83 μg/m3
Nitrogen Dioxide: 5.05 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:11 PM
Sunset: 8:35 PM
Daylight: 14 hrs 46 mins
Moonrise: 5:16 PM
Moon Transit: 10:09 PM
Moonset: 2:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

4:49 AM - 7:19 AM
12:00 AM - 12:00 AM

Minor Periods

4:46 PM - 6:16 PM
1:55 AM - 3:25 AM

Action Rating: 2 out of 5

Friday, June 26, 2026

Weather Forecast

Patchy rain nearby
65.5°F
56°F
60.3°F
85%
0.01 in
29%
0%
11.6 mph
6.7


Air Quality

AQI: 1 - Good
PM2.5: 9.08 μg/m3
PM10: 14.14 μg/m3
Carbon Monoxide: 90.5 μg/m3
Nitrogen Dioxide: 4.94 μg/m3
Sulphur Dioxide: 0.81 μg/m3
Ozone: 50.21 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:11 PM
Sunset: 8:35 PM
Daylight: 14 hrs 46 mins
Moonrise: 6:17 PM
Moon Transit: 10:58 PM
Moonset: 2:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.2%

Best Times for Fishing or Hunting

Major Periods

5:36 AM - 8:06 AM
12:00 AM - 12:00 AM

Minor Periods

5:47 PM - 7:17 PM
2:27 AM - 3:57 AM

Action Rating: 3 out of 5

Saturday, June 27, 2026

Weather Forecast

Patchy rain nearby
63.2°F
54.7°F
59.6°F
72%
0.01 in
18%
0%
22.1 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 8.62 μg/m3
PM10: 13.68 μg/m3
Carbon Monoxide: 89.21 μg/m3
Nitrogen Dioxide: 3.53 μg/m3
Sulphur Dioxide: 0.71 μg/m3
Ozone: 53.75 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:12 PM
Sunset: 8:35 PM
Daylight: 14 hrs 45 mins
Moonrise: 7:15 PM
Moon Transit: 11:48 PM
Moonset: 3:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.2%

Best Times for Fishing or Hunting

Major Periods

6:26 AM - 8:56 AM
12:00 AM - 12:00 AM

Minor Periods

6:45 PM - 8:15 PM
3:06 AM - 4:36 AM

Action Rating: 3 out of 5

Sunday, June 28, 2026

Weather Forecast

Sunny
67.4°F
51.1°F
58.7°F
70%
0 in
6%
0%
13.6 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 6.34 μg/m3
PM10: 9.46 μg/m3
Carbon Monoxide: 96.17 μg/m3
Nitrogen Dioxide: 4.57 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 60.44 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:12 PM
Sunset: 8:35 PM
Daylight: 14 hrs 45 mins
Moonrise: 8:08 PM
Moon Transit: 12:00 AM
Moonset: 4:21 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:17 AM - 9:47 AM

Minor Periods

7:38 PM - 9:08 PM
3:51 AM - 5:21 AM

Action Rating: 3 out of 5

Monday, June 29, 2026

Weather Forecast

Sunny
71.7°F
52.6°F
59.2°F
76%
0 in
8%
0%
8.9 mph
0


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:12 PM
Sunset: 8:35 PM
Daylight: 14 hrs 45 mins
Moonrise: 8:55 PM
Moon Transit: 12:40 AM
Moonset: 5:13 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:10 AM - 2:40 AM
8:08 AM - 10:38 AM

Minor Periods

8:25 PM - 9:55 PM
4:43 AM - 6:13 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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