Water Temperature of San Francisco Bay in San Rafael, CA

Current Water Temperature

67.6°F

Measurement Time: Friday, July 31, 2026, 12:00 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

68°F
Clear
Clear
68°F
76.3°F
64%
SW 8.1 mph
16.9 mph
73.2°F
51.7°F
0 in
0%
10 mi
1014 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 97°F
L: 54°F
Sunny
Sat
H: 71°F
L: 55°F
Sunny
Sun
H: 70°F
L: 54°F
Sunny
Mon
H: 72°F
L: 54°F
Sunny
Tue
H: 68°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 9.7 μg/m3
PM10: 13.9 μg/m3
Carbon Monoxide: 100 μg/m3
Nitrogen Dioxide: 8.1 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 33 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:16 PM
Sunset: 8:20 PM
Daylight: 14 hrs 7 mins
Moonrise: 9:34 PM
Moon Transit: 2:36 AM
Moonset: 8:12 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:06 AM - 4:36 AM
10:01 AM - 12:31 AM

Minor Periods

9:04 PM - 10:34 PM
7:42 AM - 9:12 AM

Action Rating: 3 out of 5

Small Craft Advisory issued July 31 at 8:58AM PDT until August 1 at 9:00PM PDT by NWS San Francisco CA

Effective: Fri July 31, 2026, 8:58 AM
Expires: Fri July 31, 2026, 5:00 PM

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt expected. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 NM. * WHEN...From 3 PM this afternoon to 9 PM PDT Saturday. * 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 31 at 2:03PM PDT until August 2 at 5:00AM PDT by NWS San Francisco CA

Effective: Fri July 31, 2026, 2:03 PM
Expires: Fri July 31, 2026, 10:15 PM

* WHAT...Northwest winds 15 to 25 kt with occasional gusts up to 35 kt and seas 8 to 10 ft expected. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 NM. * WHEN...Until 5 AM PDT Sunday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Friday, July 31, 2026

Weather Forecast

Sunny
97°F
54°F
70.4°F
62%
0 in
3%
0%
8.1 mph
10.2


Air Quality

AQI: 1 - Good
PM2.5: 10.17 μg/m3
PM10: 13.65 μg/m3
Carbon Monoxide: 103.04 μg/m3
Nitrogen Dioxide: 8.46 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 40.13 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:16 PM
Sunset: 8:20 PM
Daylight: 14 hrs 7 mins
Moonrise: 9:34 PM
Moon Transit: 2:36 AM
Moonset: 8:12 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:06 AM - 4:36 AM
10:01 AM - 12:31 AM

Minor Periods

9:04 PM - 10:34 PM
7:42 AM - 9:12 AM

Action Rating: 3 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
70.6°F
55°F
62.6°F
76%
0 in
8%
0%
8.9 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 6.48 μg/m3
PM10: 8.78 μg/m3
Carbon Monoxide: 102.04 μg/m3
Nitrogen Dioxide: 5.68 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 38.38 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:16 PM
Sunset: 8:19 PM
Daylight: 14 hrs 5 mins
Moonrise: 9:58 PM
Moon Transit: 3:20 AM
Moonset: 9:14 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:50 AM - 5:20 AM
10:44 AM - 1:14 PM

Minor Periods

9:28 PM - 10:58 PM
8:44 AM - 10:14 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Sunny
70.3°F
54.4°F
61.3°F
76%
0 in
8%
0%
10.7 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 8.61 μg/m3
PM10: 11.63 μg/m3
Carbon Monoxide: 100.79 μg/m3
Nitrogen Dioxide: 7.85 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 42.54 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 1:16 PM
Sunset: 8:18 PM
Daylight: 14 hrs 4 mins
Moonrise: 10:21 PM
Moon Transit: 3:50 PM
Moonset: 10:18 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

11:27 AM - 1:57 PM
3:20 PM - 5:50 PM

Minor Periods

9:51 PM - 11:21 PM
9:48 AM - 11:18 AM

Action Rating: 2 out of 5

Monday, August 3, 2026

Weather Forecast

Sunny
72°F
54.1°F
61.7°F
74%
0 in
7%
0%
11.6 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 11.68 μg/m3
PM10: 15.79 μg/m3
Carbon Monoxide: 101.13 μg/m3
Nitrogen Dioxide: 11.44 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 40.5 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 1:16 PM
Sunset: 8:17 PM
Daylight: 14 hrs 2 mins
Moonrise: 10:46 PM
Moon Transit: 12:00 AM
Moonset: 11:23 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

10:16 PM - 11:46 PM
10:53 AM - 12:23 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
68.2°F
55.1°F
60.8°F
77%
0 in
8%
0%
14.3 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 12.59 μg/m3
PM10: 17.18 μg/m3
Carbon Monoxide: 98.09 μg/m3
Nitrogen Dioxide: 9.67 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 56.33 μg/m3

Astronomical

Sunrise: 6:16 AM
Sun Transit: 1:15 PM
Sunset: 8:16 PM
Daylight: 14 hrs mins
Moonrise: 11:14 PM
Moon Transit: 5:32 AM
Moonset: 12:31 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:02 AM - 7:32 AM
12:58 AM - 3:28 PM

Minor Periods

12:00 AM - 12:00 AM
12:01 AM - 1:31 PM

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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