Water Temperature of San Francisco Bay in San Rafael, CA

Current Water Temperature

66.7°F

Measurement Time: Friday, July 17, 2026, 2:00 PM 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

57.9°F
Clear
Clear
56.6°F
60.3°F
88%
WSW 7.4 mph
12.2 mph
60.3°F
49.8°F
0 in
0%
9 mi
1014 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 87°F
L: 51°F
Sunny
Sat
H: 68°F
L: 51°F
Sunny
Sun
H: 68°F
L: 54°F
Sunny
Mon
H: 70°F
L: 57°F
Sunny
Tue
H: 73°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 9.3 μg/m3
PM10: 13.5 μg/m3
Carbon Monoxide: 94 μg/m3
Nitrogen Dioxide: 5.6 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 54 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:16 PM
Sunset: 8:31 PM
Daylight: 14 hrs 30 mins
Moonrise: 9:50 AM
Moon Transit: 4:23 PM
Moonset: 10:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:53 PM - 6:23 PM

Minor Periods

10:17 PM - 11:47 PM
9:20 AM - 10:50 AM

Action Rating: 2 out of 5

Small Craft Advisory issued July 17 at 2:32PM PDT until July 17 at 9:00PM PDT by NWS San Francisco CA

Effective: Fri July 17, 2026, 2:32 PM
Expires: Fri July 17, 2026, 9:00 PM

* WHAT...Northwest winds 15 to 20 kt with gusts up to 25 kt. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 NM. * WHEN...Until 9 PM PDT this evening. * 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 July 17 at 9:09AM PDT until July 17 at 9:00PM PDT by NWS San Francisco CA

Effective: Fri July 17, 2026, 9:09 AM
Expires: Fri July 17, 2026, 5:15 PM

* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 NM. * WHEN...Until 9 PM PDT this evening. * 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 July 17 at 8:43PM PDT until July 17 at 9:00PM PDT by NWS San Francisco CA

Effective: Fri July 17, 2026, 8:43 PM
Expires: Fri July 17, 2026, 9:45 PM

Conditions have dropped below advisory criteria, therefore the Small Craft Advisory has been allowed to expire.
Friday, July 17, 2026

Weather Forecast

Sunny
86.5°F
51.4°F
67°F
63%
0 in
4%
0%
10.1 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 8.77 μg/m3
PM10: 12.38 μg/m3
Carbon Monoxide: 96.42 μg/m3
Nitrogen Dioxide: 5.31 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 52.75 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:16 PM
Sunset: 8:31 PM
Daylight: 14 hrs 30 mins
Moonrise: 9:50 AM
Moon Transit: 4:23 PM
Moonset: 10:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:53 PM - 6:23 PM

Minor Periods

10:17 PM - 11:47 PM
9:20 AM - 10:50 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
67.9°F
51.1°F
59.6°F
77%
0 in
10%
0%
9.8 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 7.76 μg/m3
PM10: 10.78 μg/m3
Carbon Monoxide: 90.92 μg/m3
Nitrogen Dioxide: 4.69 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 49.54 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:16 PM
Sunset: 8:30 PM
Daylight: 14 hrs 28 mins
Moonrise: 10:57 AM
Moon Transit: 5:09 PM
Moonset: 11:11 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:39 PM - 7:09 PM

Minor Periods

12:00 AM - 12:00 AM
10:27 AM - 11:57 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
68.3°F
54.1°F
60.7°F
76%
0 in
10%
0%
12.3 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 7.94 μg/m3
PM10: 10.8 μg/m3
Carbon Monoxide: 93.33 μg/m3
Nitrogen Dioxide: 5.73 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 54.38 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:16 PM
Sunset: 8:30 PM
Daylight: 14 hrs 27 mins
Moonrise: 12:02 AM
Moon Transit: 5:52 PM
Moonset: 12:11 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

12:33 AM - 3:03 AM
5:22 PM - 7:52 PM

Minor Periods

11:32 AM - 1:02 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
69.5°F
56.5°F
62.3°F
75%
0 in
8%
0%
13 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 8.98 μg/m3
PM10: 12.48 μg/m3
Carbon Monoxide: 94.79 μg/m3
Nitrogen Dioxide: 5.79 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 52.54 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:16 PM
Sunset: 8:29 PM
Daylight: 14 hrs 26 mins
Moonrise: 1:05 PM
Moon Transit: 6:36 PM
Moonset: 12:34 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

1:16 AM - 3:46 AM
6:06 PM - 8:36 PM

Minor Periods

12:35 AM - 2:05 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
72.8°F
57.6°F
65.3°F
68%
0 in
8%
0%
11 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 7.61 μg/m3
PM10: 10.45 μg/m3
Carbon Monoxide: 98.19 μg/m3
Nitrogen Dioxide: 5.19 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 51.13 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:16 PM
Sunset: 8:28 PM
Daylight: 14 hrs 24 mins
Moonrise: 2:07 PM
Moon Transit: 7:20 PM
Moonset: 12:59 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
6:50 PM - 9:20 PM

Minor Periods

1:37 PM - 3:07 PM
12:00 AM - 12:00 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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