Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

58.8°F

Measurement Time: Wednesday, November 19, 2025, 10:00 PM PST

Temperature Locations

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Local Points of Interest

Alcatraz Island

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San Francisco Bay

Station Name: SAN FRANCISCO BAY A NE SHORE ALCATRAZ ISLAND CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
Alcatraz Island
San Francisco, CA 94133-1312
San Francisco County

GPS Coordinates: 37.8272222, -122.4216667

Nearby Water Temperatures

San Francisco Bay, San Francisco, CA (2.1 mi)
San Francisco Bay, San Francisco, CA (2.8 mi)
Rodeo Pond, Sausalito, CA (5.6 mi)
Rodeo Lagoon, Sausalito, CA (5.8 mi)
Rodeo Lagoon, Sausalito, CA (6.1 mi)
San Francisco Bay, Richmond, CA (7.1 mi)
San Francisco Bay, San Rafael, CA (7.6 mi)
San Francisco Bay, Alameda, CA (7.7 mi)
San Francisco Bay, San Mateo, CA (16.7 mi)
Carquinez Strait, Martinez, CA (21.6 mi)
Pacific Ocean, San Francisco, CA (23.3 mi)
Redwood Creek, Redwood City, CA (25.0 mi)
Suisun Bay, Concord, CA (26.1 mi)
San Francisco Bay, Menlo Park, CA (27.7 mi)
Drakes Bay, Inverness, CA (32.2 mi)

Weather for San Francisco, California

Current Weather

51.1°F
Light rain
Conditions: Light rain
Humidity: 96%
Feels Like: 48°F
Wind: WNW 8.1 mph
Wind Gusts: 11.2 mph
Pressure: 30.02 in
Precipitation: 0.04 in
Cloud Cover: 100%
Visibility: 8 mi
UV Index: 0

Five Day Weather Forecast

Moderate rain
Thu
H: 57°F
L: 50°F
Sunny
Fri
H: 62°F
L: 50°F
Cloudy
Sat
H: 58°F
L: 47°F
Sunny
Sun
H: 62°F
L: 53°F
Sunny
Mon
H: 61°F
L: 54°F

Air Quality

AQI: 2 - Moderate
PM2.5: 5.45 μg/m3
PM10: 7.45 μg/m3
Carbon Monoxide: 143.85 μg/m3
Nitrogen Dioxide: 4.45 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 82 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 11:55 AM
Sunset: 4:55 PM
Daylight: 9 hrs 59 mins
Moonrise: 7:35 AM
Moon Transit: 12:16 AM
Moonset: 4:55 PM
Moon Phase: New
Moon Illumination: 2.7%

Best Times for Fishing or Hunting

Major Periods

7:43 PM - 10:13 PM
11:46 AM - 2:16 PM

Minor Periods

4:25 PM - 5:55 PM
7:05 AM - 8:35 AM

Action Rating: 4 out of 5

Beach Hazards Statement issued November 19 at 3:20PM PST until November 24 at 10:00PM PST by NWS San Francisco CA

Effective: Wed November 19, 2025, 3:20 PM
Expires: Thu November 20, 2025, 5:00 AM

* WHAT...A long period northwesterly swell will result in an increased risk for sneaker waves and rip currents. Breaking waves of 13 to 18 feet are expected. * WHERE...Pacific Coast beaches. * WHEN...From Thursday afternoon through Monday evening. * IMPACTS...Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. Rip currents are typically more frequent and stronger in the vicinity of jetties, inlets, and piers.

Remain out of the water to avoid hazardous swimming conditions.


Beach Hazards Statement issued November 20 at 4:23AM PST until November 24 at 10:00PM PST by NWS San Francisco CA

Effective: Thu November 20, 2025, 4:23 AM
Expires: Thu November 20, 2025, 3:00 PM

* WHAT...A long period northwesterly swell will result in an increased risk for sneaker waves and rip currents. Breaking waves of 13 to 18 feet are expected. * WHERE...Pacific Coast beaches. * WHEN...From Thursday afternoon through Monday evening. * IMPACTS...Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. Rip currents are typically more frequent and stronger in the vicinity of jetties, inlets, and piers.

Remain out of the water to avoid hazardous swimming conditions. Stay off rocks and never turn your back on the ocean!
Thursday, November 20, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 52.3°F
Average Humidity: 89%
Chance of Rain: 87%
Wind: 13.2 mph
UV Index: 0.4

Air Quality

AQI: 1 - Good
PM2.5: 10.09 μg/m3
PM10: 13.01 μg/m3
Carbon Monoxide: 203.53 μg/m3
Nitrogen Dioxide: 15.2 μg/m3
Sulphur Dioxide: 3.36 μg/m3
Ozone: 66.56 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 11:55 AM
Sunset: 4:55 PM
Daylight: 9 hrs 59 mins
Moonrise: 7:35 AM
Moon Transit: 12:16 AM
Moonset: 4:55 PM
Moon Phase: New
Moon Illumination: 2.7%

Best Times for Fishing or Hunting

Major Periods

7:43 PM - 10:13 PM
11:46 AM - 2:16 PM

Minor Periods

4:25 PM - 5:55 PM
7:05 AM - 8:35 AM

Action Rating: 4 out of 5

Friday, November 21, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 55.4°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 0.5

Air Quality

AQI: 1 - Good
PM2.5: 10.05 μg/m3
PM10: 11.43 μg/m3
Carbon Monoxide: 242.73 μg/m3
Nitrogen Dioxide: 23.43 μg/m3
Sulphur Dioxide: 4.73 μg/m3
Ozone: 48.12 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 11:55 AM
Sunset: 4:54 PM
Daylight: 9 hrs 57 mins
Moonrise: 8:35 AM
Moon Transit: 1:07 PM
Moonset: 5:38 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

8:34 PM - 11:04 PM
12:37 AM - 3:07 PM

Minor Periods

5:08 PM - 6:38 PM
8:05 AM - 9:35 AM

Action Rating: 4 out of 5

Saturday, November 22, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 52.7°F
Average Humidity: 86%
Chance of Rain: 0%
Wind: 4.5 mph
UV Index: 0.5

Air Quality

AQI: 2 - Moderate
PM2.5: 27.46 μg/m3
PM10: 28.87 μg/m3
Carbon Monoxide: 362.85 μg/m3
Nitrogen Dioxide: 57.56 μg/m3
Sulphur Dioxide: 8.43 μg/m3
Ozone: 15.84 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 11:55 AM
Sunset: 4:54 PM
Daylight: 9 hrs 56 mins
Moonrise: 9:29 AM
Moon Transit: 2:00 PM
Moonset: 6:30 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

9:26 PM - 11:56 PM
1:30 PM - 4:00 PM

Minor Periods

6:00 PM - 7:30 PM
8:59 AM - 10:29 AM

Action Rating: 3 out of 5

Sunday, November 23, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 56.6°F
Average Humidity: 67%
Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 0.5

Air Quality

AQI: 2 - Moderate
PM2.5: 22.06 μg/m3
PM10: 26.17 μg/m3
Carbon Monoxide: 267.29 μg/m3
Nitrogen Dioxide: 25.81 μg/m3
Sulphur Dioxide: 6.03 μg/m3
Ozone: 45.84 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 11:56 AM
Sunset: 4:53 PM
Daylight: 9 hrs 54 mins
Moonrise: 10:19 AM
Moon Transit: 2:51 PM
Moonset: 7:26 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:21 PM - 4:51 PM

Minor Periods

6:56 PM - 8:26 PM
9:49 AM - 11:19 AM

Action Rating: 3 out of 5

Monday, November 24, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 56.3°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 5.8 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 18.03 μg/m3
PM10: 21.2 μg/m3
Carbon Monoxide: 291.47 μg/m3
Nitrogen Dioxide: 20.1 μg/m3
Sulphur Dioxide: 4.39 μg/m3
Ozone: 55.38 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 11:56 AM
Sunset: 4:53 PM
Daylight: 9 hrs 53 mins
Moonrise: 11:00 AM
Moon Transit: 3:42 PM
Moonset: 8:29 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:12 PM - 5:42 PM

Minor Periods

7:59 PM - 9:29 PM
10:30 AM - 12:00 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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