Water Temperature of San Francisco Bay in San Rafael, CA

Current Water Temperature

66.2°F

Measurement Time: Wednesday, July 29, 2026, 10:00 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

53.6°F
Sunny
Sunny
51.6°F
55.2°F
94%
SSW 6.7 mph
12.5 mph
54.6°F
51.2°F
0 in
0%
10 mi
1012 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 69°F
L: 55°F
Sunny
Fri
H: 69°F
L: 55°F
Sunny
Sat
H: 71°F
L: 55°F
Sunny
Sun
H: 70°F
L: 56°F
Sunny
Mon
H: 72°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 6.5 μg/m3
PM10: 8.1 μg/m3
Carbon Monoxide: 89 μg/m3
Nitrogen Dioxide: 8.1 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 30 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:16 PM
Sunset: 8:21 PM
Daylight: 14 hrs 9 mins
Moonrise: 9:10 PM
Moon Transit: 1:52 AM
Moonset: 7:09 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:22 AM - 3:52 AM
9:17 AM - 11:47 AM

Minor Periods

8:40 PM - 10:10 PM
6:39 AM - 8:09 AM

Action Rating: 5 out of 5

Small Craft Advisory issued July 29 at 8:50PM PDT until July 30 at 9:00PM PDT by NWS San Francisco CA

Effective: Wed July 29, 2026, 8:50 PM
Expires: Thu July 30, 2026, 5:00 AM

* WHAT...A moderate chop expected. West to southwest winds 5 to 15 kt with gusts to 22 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 2 PM to 9 PM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Thursday, July 30, 2026

Weather Forecast

Sunny
68.7°F
55.2°F
61.6°F
72%
0 in
7%
0%
9.6 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 8.75 μg/m3
PM10: 12.25 μg/m3
Carbon Monoxide: 97.54 μg/m3
Nitrogen Dioxide: 7 μg/m3
Sulphur Dioxide: 0.79 μg/m3
Ozone: 46.08 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:16 PM
Sunset: 8:21 PM
Daylight: 14 hrs 9 mins
Moonrise: 9:10 PM
Moon Transit: 1:52 AM
Moonset: 7:09 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:22 AM - 3:52 AM
9:17 AM - 11:47 AM

Minor Periods

8:40 PM - 10:10 PM
6:39 AM - 8:09 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Sunny
69.4°F
54.7°F
61°F
75%
0 in
7%
0%
8.9 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 9.99 μg/m3
PM10: 13.65 μg/m3
Carbon Monoxide: 100.71 μg/m3
Nitrogen Dioxide: 8.18 μg/m3
Sulphur Dioxide: 0.84 μg/m3
Ozone: 41.88 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
71.1°F
54.8°F
62.2°F
77%
0 in
8%
0%
7.2 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 6.82 μg/m3
PM10: 9.33 μg/m3
Carbon Monoxide: 97.96 μg/m3
Nitrogen Dioxide: 5.31 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 39.21 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
55.7°F
61.5°F
79%
0 in
10%
0%
9.8 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 8.35 μg/m3
PM10: 11.37 μg/m3
Carbon Monoxide: 102.33 μg/m3
Nitrogen Dioxide: 6.95 μg/m3
Sulphur Dioxide: 0.82 μg/m3
Ozone: 41 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
71.6°F
54.8°F
62°F
74%
0 in
7%
0%
11.6 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 8.42 μg/m3
PM10: 10.6 μg/m3
Carbon Monoxide: 130 μg/m3
Nitrogen Dioxide: 16.8 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 18 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

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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