Water Temperature of San Francisco Bay in San Rafael, CA

Current Water Temperature

67.6°F

Measurement Time: Monday, August 3, 2026, 3:00 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

87.3°F
Sunny
Sunny
86°F
86.5°F
35%
S 5.8 mph
10.7 mph
87.3°F
56.1°F
0 in
0%
6 mi
1010 mbar
6.9

Five Day Weather Forecast

Sunny
Mon
H: 97°F
L: 57°F
Sunny
Tue
H: 70°F
L: 55°F
Sunny
Wed
H: 70°F
L: 56°F
Sunny
Thu
H: 70°F
L: 55°F
Sunny
Fri
H: 71°F
L: 54°F

Air Quality

AQI: 1 - Good
PM2.5: 15 μg/m3
PM10: 20.7 μg/m3
Carbon Monoxide: 99 μg/m3
Nitrogen Dioxide: 8.4 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 53 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

Heat Advisory issued August 2 at 10:52PM PDT until August 3 at 10:00PM PDT by NWS San Francisco CA

Effective: Sun August 2, 2026, 10:52 PM
Expires: Mon August 3, 2026, 10:00 PM

* WHAT...High temperatures ranging from 95 to 105. * WHERE...The Santa Clara Valley and The Eastern Santa Clara Hills, The East Bay Hills and Valleys, and North Bay Interior Mountains. * WHEN...From 10 AM to 10 PM PDT Monday. * 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke. 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.


Small Craft Advisory issued August 3 at 2:41AM PDT until August 3 at 9:00PM PDT by NWS San Francisco CA

Effective: Mon August 3, 2026, 2:41 AM
Expires: Mon August 3, 2026, 10:45 AM

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 12 ft expected. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 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.


Gale Warning issued August 3 at 2:41AM PDT until August 3 at 3:00AM PDT by NWS San Francisco CA

Effective: Mon August 3, 2026, 2:41 AM
Expires: Mon August 3, 2026, 10:45 AM

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 12 ft expected. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 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.


Monday, August 3, 2026

Weather Forecast

Sunny
97.2°F
56.5°F
75.1°F
49%
0 in
1%
0%
14.5 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 12.3 μg/m3
PM10: 16.55 μg/m3
Carbon Monoxide: 98.5 μg/m3
Nitrogen Dioxide: 12.63 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 41.92 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
70°F
54.9°F
61.6°F
75%
0 in
7%
0%
13.4 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 13.15 μg/m3
PM10: 17.83 μg/m3
Carbon Monoxide: 92.04 μg/m3
Nitrogen Dioxide: 10.55 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 58.04 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
69.8°F
55.9°F
61.5°F
80%
0 in
10%
0%
14.1 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 13.71 μg/m3
PM10: 17.79 μg/m3
Carbon Monoxide: 115.38 μg/m3
Nitrogen Dioxide: 7.69 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 73.58 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°F
54.7°F
61.2°F
78%
0 in
9%
0%
11 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 14.18 μg/m3
PM10: 17.49 μg/m3
Carbon Monoxide: 132.31 μg/m3
Nitrogen Dioxide: 7.19 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 82.08 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
70.6°F
54°F
61.1°F
75%
0 in
8%
0%
10.7 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 11.6 μg/m3
PM10: 14.52 μg/m3
Carbon Monoxide: 177.67 μg/m3
Nitrogen Dioxide: 8.07 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 55.33 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

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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