Water Temperature of San Francisco Bay in San Rafael, CA

Current Water Temperature

63.3°F

Measurement Time: Wednesday, July 22, 2026, 12:30 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

66.9°F
Overcast
Overcast
66.9°F
65.7°F
83%
SSW 8.1 mph
11.8 mph
65.7°F
62.1°F
0 in
100%
9 mi
1018 mbar
2.7

Five Day Weather Forecast

Sunny
Wed
H: 76°F
L: 58°F
Sunny
Thu
H: 71°F
L: 56°F
Sunny
Fri
H: 72°F
L: 55°F
Sunny
Sat
H: 73°F
L: 56°F
Sunny
Sun
H: 70°F
L: 56°F

Air Quality

AQI: 1 - Good
PM2.5: 3.8 μg/m3
PM10: 5.3 μg/m3
Carbon Monoxide: 91 μg/m3
Nitrogen Dioxide: 5 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 52 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:16 PM
Sunset: 8:28 PM
Daylight: 14 hrs 23 mins
Moonrise: 3:10 PM
Moon Transit: 8:06 PM
Moonset: 12:26 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

2:45 AM - 5:15 AM
7:36 PM - 10:06 PM

Minor Periods

2:40 PM - 4:10 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Small Craft Advisory issued July 21 at 9:40PM PDT until July 22 at 3:00AM PDT by NWS San Francisco CA

Effective: Tue July 21, 2026, 9:40 PM
Expires: Wed July 22, 2026, 3:00 AM

* WHAT...Southwest winds 15 to 30 kt with gale force gusts up to 35 kt and choppy waters. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Wednesday, July 22, 2026

Weather Forecast

Sunny
75.6°F
57.6°F
67.5°F
81%
0 in
14%
0%
12.3 mph
10.5


Air Quality

AQI: 1 - Good
PM2.5: 5.59 μg/m3
PM10: 7.82 μg/m3
Carbon Monoxide: 91.46 μg/m3
Nitrogen Dioxide: 4.76 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 54.29 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:16 PM
Sunset: 8:28 PM
Daylight: 14 hrs 23 mins
Moonrise: 3:10 PM
Moon Transit: 8:06 PM
Moonset: 12:26 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

2:45 AM - 5:15 AM
7:36 PM - 10:06 PM

Minor Periods

2:40 PM - 4:10 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
70.9°F
56.4°F
62.1°F
80%
0 in
13%
0%
11.4 mph
10.6


Air Quality

AQI: 1 - Good
PM2.5: 7.99 μg/m3
PM10: 10.69 μg/m3
Carbon Monoxide: 95.75 μg/m3
Nitrogen Dioxide: 4.47 μg/m3
Sulphur Dioxide: 0.89 μg/m3
Ozone: 56.75 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:16 PM
Sunset: 8:27 PM
Daylight: 14 hrs 21 mins
Moonrise: 4:11 PM
Moon Transit: 8:54 PM
Moonset: 12:57 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

3:31 AM - 6:01 AM
8:24 PM - 10:54 PM

Minor Periods

3:41 PM - 5:11 PM
12:27 AM - 1:57 AM

Action Rating: 4 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
71.8°F
54.9°F
62.4°F
73%
0 in
7%
0%
12.1 mph
10.3


Air Quality

AQI: 1 - Good
PM2.5: 6.69 μg/m3
PM10: 9.09 μg/m3
Carbon Monoxide: 95.04 μg/m3
Nitrogen Dioxide: 3.59 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 56.75 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:16 PM
Sunset: 8:26 PM
Daylight: 14 hrs 19 mins
Moonrise: 5:10 PM
Moon Transit: 9:44 PM
Moonset: 1:33 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

4:20 AM - 6:50 AM
9:14 PM - 11:44 PM

Minor Periods

4:40 PM - 6:10 PM
1:03 AM - 2:33 AM

Action Rating: 2 out of 5

Saturday, July 25, 2026

Weather Forecast

Sunny
73°F
55.7°F
63.1°F
72%
0 in
6%
0%
10.7 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 7.14 μg/m3
PM10: 9.78 μg/m3
Carbon Monoxide: 98.18 μg/m3
Nitrogen Dioxide: 4.59 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 46.58 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:16 PM
Sunset: 8:25 PM
Daylight: 14 hrs 18 mins
Moonrise: 6:06 PM
Moon Transit: 10:35 PM
Moonset: 2:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
12:00 AM - 12:00 AM

Minor Periods

5:36 PM - 7:06 PM
1:47 AM - 3:17 AM

Action Rating: 2 out of 5

Sunday, July 26, 2026

Weather Forecast

Sunny
70.1°F
55.8°F
62.4°F
74%
0 in
7%
0%
11 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 5.47 μg/m3
PM10: 7.02 μg/m3
Carbon Monoxide: 103.17 μg/m3
Nitrogen Dioxide: 5.48 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 35 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:16 PM
Sunset: 8:24 PM
Daylight: 14 hrs 16 mins
Moonrise: 6:55 PM
Moon Transit: 11:27 PM
Moonset: 3:06 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

6:02 AM - 8:32 AM
12:00 AM - 12:00 AM

Minor Periods

6:25 PM - 7:55 PM
2:36 AM - 4:06 AM

Action Rating: 4 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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