Water Temperature of San Francisco Bay in San Rafael, CA

Current Water Temperature

64.8°F

Measurement Time: Thursday, June 18, 2026, 4:00 AM PDT

Temperature Locations

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Local Points of Interest

Richmond, CA

San Francisco Bay

Station Name: SAN FRANCISCO BAY A RICHMOND-SAN RAFAEL BRIDGE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
Richmond-San Rafael Bridge
San Rafael, CA 94801
Marin County

GPS Coordinates: 37.93527778, -122.4463889

Nearby Water Temperatures

San Francisco Bay, Richmond, CA (2.6 mi)
San Francisco Bay, San Francisco, CA (7.6 mi)
Rodeo Pond, Sausalito, CA (8.3 mi)
Rodeo Lagoon, Sausalito, CA (8.5 mi)
Rodeo Lagoon, Sausalito, CA (8.7 mi)
San Francisco Bay, San Francisco, CA (9 mi)
San Francisco Bay, San Francisco, CA (9.5 mi)
San Francisco Bay, Alameda, CA (13.8 mi)
Carquinez Strait, Martinez, CA (18.8 mi)
Suisun Bay, Concord, CA (23.7 mi)
San Francisco Bay, San Mateo, CA (23.8 mi)
Pacific Ocean, San Francisco, CA (24.8 mi)
Drakes Bay, Inverness, CA (29 mi)
Redwood Creek, Redwood City, CA (32.3 mi)
San Francisco Bay, Menlo Park, CA (34.7 mi)

Weather for San Rafael, California

Current Weather

75.2°F
Sunny
Sunny
78.1°F
71.5°F
54%
SSW 13.4 mph
18.1 mph
69.3°F
58.5°F
0 in
0%
9 mi
1012 mbar
9.3

Five Day Weather Forecast

Partly Cloudy
Thu
H: 75°F
L: 53°F
Partly Cloudy
Fri
H: 64°F
L: 57°F
Sunny
Sat
H: 65°F
L: 53°F
Sunny
Sun
H: 67°F
L: 53°F
Sunny
Mon
H: 66°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 9.4 μg/m3
PM10: 14 μg/m3
Carbon Monoxide: 96 μg/m3
Nitrogen Dioxide: 2.8 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 70 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:11 PM
Sunset: 8:35 PM
Daylight: 14 hrs 48 mins
Moonrise: 9:48 AM
Moon Transit: 4:57 PM
Moonset: 12:22 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:27 PM - 6:57 PM

Minor Periods

9:18 AM - 10:48 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Small Craft Advisory issued June 18 at 2:41AM PDT until June 19 at 9:00PM PDT by NWS San Francisco CA

Effective: Thu June 18, 2026, 2:41 AM
Expires: Thu June 18, 2026, 10:45 AM

* WHAT...For the first Small Craft Advisory, southwest winds 15 to 20 kt and choppy waters expected. For the second Small Craft Advisory, southwest winds 15 to 20 kt and a moderate chop expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...For the first Small Craft Advisory, from 3 PM this afternoon to 9 PM PDT this evening. For the second Small Craft Advisory, from 3 PM to 9 PM 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 18 at 2:41AM PDT until June 18 at 9:00PM PDT by NWS San Francisco CA

Effective: Thu June 18, 2026, 2:41 AM
Expires: Thu June 18, 2026, 10:45 AM

* WHAT...For the first Small Craft Advisory, southwest winds 15 to 20 kt and choppy waters expected. For the second Small Craft Advisory, southwest winds 15 to 20 kt and a moderate chop expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...For the first Small Craft Advisory, from 3 PM this afternoon to 9 PM PDT this evening. For the second Small Craft Advisory, from 3 PM to 9 PM 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 18, 2026

Weather Forecast

Partly Cloudy
74.5°F
52.7°F
62.3°F
80%
0 in
12%
0%
15.4 mph
10.2


Air Quality

AQI: 1 - Good
PM2.5: 8.58 μg/m3
PM10: 12.98 μg/m3
Carbon Monoxide: 95.46 μg/m3
Nitrogen Dioxide: 3.98 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 62.96 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:11 PM
Sunset: 8:35 PM
Daylight: 14 hrs 48 mins
Moonrise: 9:48 AM
Moon Transit: 4:57 PM
Moonset: 12:22 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:27 PM - 6:57 PM

Minor Periods

9:18 AM - 10:48 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, June 19, 2026

Weather Forecast

Partly Cloudy
63.9°F
56.5°F
59.8°F
77%
0 in
18%
0%
14.1 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 8.42 μg/m3
PM10: 12.7 μg/m3
Carbon Monoxide: 94.88 μg/m3
Nitrogen Dioxide: 4.42 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 68.79 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 48 mins
Moonrise: 11:00 AM
Moon Transit: 5:46 PM
Moonset: 12:54 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

12:24 AM - 2:54 AM
5:16 PM - 7:46 PM

Minor Periods

10:30 AM - 12:00 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, June 20, 2026

Weather Forecast

Sunny
64.8°F
52.9°F
59.1°F
75%
0 in
9%
0%
12.8 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 9.69 μg/m3
PM10: 13.45 μg/m3
Carbon Monoxide: 99.92 μg/m3
Nitrogen Dioxide: 6.71 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 58.92 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 48 mins
Moonrise: 12:07 AM
Moon Transit: 6:31 PM
Moonset: 12:22 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%

Best Times for Fishing or Hunting

Major Periods

1:11 AM - 3:41 AM
6:01 PM - 8:31 PM

Minor Periods

11:37 AM - 1:07 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, June 21, 2026

Weather Forecast

Sunny
66.6°F
52.8°F
58.3°F
80%
0 in
10%
0%
11.6 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 10.95 μg/m3
PM10: 16.15 μg/m3
Carbon Monoxide: 96.68 μg/m3
Nitrogen Dioxide: 3.82 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 59.13 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 48 mins
Moonrise: 1:11 PM
Moon Transit: 7:14 PM
Moonset: 12:46 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

1:56 AM - 4:26 AM
6:44 PM - 9:14 PM

Minor Periods

12:41 AM - 2:11 PM
12:16 AM - 1:46 AM

Action Rating: 2 out of 5

Monday, June 22, 2026

Weather Forecast

Sunny
66°F
53°F
58.8°F
80%
0 in
12%
0%
12.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 10.38 μg/m3
PM10: 14.92 μg/m3
Carbon Monoxide: 110.5 μg/m3
Nitrogen Dioxide: 6.17 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 52.17 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 48 mins
Moonrise: 2:14 PM
Moon Transit: 7:57 PM
Moonset: 1:09 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%

Best Times for Fishing or Hunting

Major Periods

2:38 AM - 5:08 AM
7:27 PM - 9:57 PM

Minor Periods

1:44 PM - 3:14 PM
12:39 AM - 2:09 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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