Water Temperature of San Francisco Bay in San Rafael, CA

Current Water Temperature

64.9°F

Measurement Time: Tuesday, August 4, 2026, 6:00 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

87.8°F
Sunny
Sunny
89.2°F
90.2°F
45%
SW 12.5 mph
24.8 mph
87.8°F
64.1°F
0 in
0%
6 mi
1010 mbar
9.3

Five Day Weather Forecast

Sunny
Tue
H: 88°F
L: 56°F
Sunny
Wed
H: 69°F
L: 56°F
Sunny
Thu
H: 71°F
L: 55°F
Sunny
Fri
H: 71°F
L: 55°F
Sunny
Sat
H: 71°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 12.4 μg/m3
PM10: 17.3 μg/m3
Carbon Monoxide: 90 μg/m3
Nitrogen Dioxide: 3.2 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 96 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

Heat Advisory issued August 4 at 5:09AM PDT until August 4 at 10:00PM PDT by NWS San Francisco CA

Effective: Tue August 4, 2026, 5:09 AM
Expires: Tue August 4, 2026, 10:00 PM

* WHAT...Temperatures in the upper 90s to low 100s. * WHERE...The East Bay Hills and Valleys. * WHEN...From 10 AM this morning to 10 PM PDT this evening. * IMPACTS...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries.

Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Beat the heat and check the backseat! Do not leave young children or pets in unattended vehicles.Car interiors will reach lethal temperatures in a matter of minutes. Stay cool, stay hydrated, stay informed.
Tuesday, August 4, 2026

Weather Forecast

Sunny
88.3°F
55.9°F
70.2°F
65%
0 in
4%
0%
14.1 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 12.8 μg/m3
PM10: 17.46 μg/m3
Carbon Monoxide: 90.58 μg/m3
Nitrogen Dioxide: 10.08 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 60.42 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

Wednesday, August 5, 2026

Weather Forecast

Sunny
69.3°F
55.5°F
61.4°F
81%
0 in
12%
0%
13.6 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 15.07 μg/m3
PM10: 19.31 μg/m3
Carbon Monoxide: 124.96 μg/m3
Nitrogen Dioxide: 7.15 μg/m3
Sulphur Dioxide: 1.46 μg/m3
Ozone: 76.54 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 1:15 PM
Sunset: 8:15 PM
Daylight: 13 hrs 58 mins
Moonrise: 12:14 AM
Moon Transit: 6:21 AM
Moonset: 1:41 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:51 AM - 8:21 AM
1:49 PM - 4:19 PM

Minor Periods

1:11 PM - 2:41 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Sunny
70.5°F
55.2°F
61.8°F
77%
0 in
8%
0%
12.1 mph
9.5


Air Quality

AQI: 2 - Moderate
PM2.5: 18.55 μg/m3
PM10: 22.6 μg/m3
Carbon Monoxide: 138.42 μg/m3
Nitrogen Dioxide: 6.53 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 87.58 μg/m3

Astronomical

Sunrise: 6:18 AM
Sun Transit: 1:15 PM
Sunset: 8:14 PM
Daylight: 13 hrs 56 mins
Moonrise: 12:48 AM
Moon Transit: 7:15 AM
Moonset: 2:55 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:45 AM - 9:15 AM
2:44 PM - 5:14 PM

Minor Periods

2:25 PM - 3:55 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, August 7, 2026

Weather Forecast

Sunny
71.4°F
55°F
62.1°F
70%
0 in
6%
0%
11 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 10.96 μg/m3
PM10: 13.98 μg/m3
Carbon Monoxide: 147.13 μg/m3
Nitrogen Dioxide: 5.95 μg/m3
Sulphur Dioxide: 1.02 μg/m3
Ozone: 62.58 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:15 PM
Sunset: 8:12 PM
Daylight: 13 hrs 54 mins
Moonrise: 12:30 AM
Moon Transit: 8:15 AM
Moonset: 4:08 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

7:45 AM - 10:15 AM
3:45 PM - 6:15 PM

Minor Periods

3:38 PM - 5:08 PM
12:00 AM - 1:30 AM

Action Rating: 2 out of 5

Saturday, August 8, 2026

Weather Forecast

Sunny
70.7°F
54.7°F
61.6°F
75%
0 in
7%
0%
11.9 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 10.52 μg/m3
PM10: 13.68 μg/m3
Carbon Monoxide: 109.5 μg/m3
Nitrogen Dioxide: 6.83 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 44.33 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:15 PM
Sunset: 8:11 PM
Daylight: 13 hrs 52 mins
Moonrise: 1:22 AM
Moon Transit: 9:18 AM
Moonset: 5:16 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.6%

Best Times for Fishing or Hunting

Major Periods

8:48 AM - 11:18 AM
4:49 PM - 7:19 PM

Minor Periods

4:46 PM - 6:16 PM
12:52 AM - 2:22 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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