Water Temperature of San Francisco Bay in San Francisco, CA
Current Water Temperature
Measurement Time: Wednesday, November 5, 2025, 10:00 PM PST
Temperature Locations
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Local Points of Interest
Alcatraz IslandSponsored Content
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

Humidity: 83%
Feels Like: 60.1°F
Wind: NW 3.1 mph
Wind Gusts: 5 mph
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Thu
H: 61°F
L: 55°F

Fri
H: 59°F
L: 55°F

Sat
H: 65°F
L: 53°F

Sun
H: 70°F
L: 60°F

Mon
H: 71°F
L: 61°F
Air Quality
Nitrogen Dioxide: 15.85 μg/m3
Sulphur Dioxide: 5.45 μg/m3
Ozone: 68 μg/m3
Astronomical
Sun Transit: 11:53 AM
Sunset: 5:05 PM
Daylight: 10 hrs 24 mins
Moon Transit: 12:34 AM
Moonset: 8:19 AM
Moon Phase: Full
Moon Illumination: 97.9%
Best Times for Fishing or Hunting
Major Periods
12:04 AM - 2:34 AM8:05 AM - 10:35 AM
Minor Periods
5:19 PM - 6:49 PM7:49 AM - 9:19 AM
Action Rating: 4 out of 5
Coastal Flood Advisory issued November 5 at 6:51PM PST until November 8 at 2:00PM PST by NWS San Francisco CA
Effective: Wed November 5, 2025, 6:51 PM
Expires: Thu November 6, 2025, 6:00 AM
* WHAT...For the Coastal Flood Advisory, up to 1.2 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, a long period westerly swell will result in an increased risk for sneaker waves, rip currents, and breaking waves of 14 to 19 feet with the highest waves up to 22 feet in favored locations. * WHERE...San Francisco and Monterey Bay. * WHEN...For the Coastal Flood Advisory, until 2 PM PST Saturday. For the Beach Hazards Statement, from late Wednesday night through Thursday 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. Flooding of lots, parks, and roads with only isolated road closures expected.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Remain out of the water to avoid hazardous swimming conditions.
Beach Hazards Statement issued November 5 at 6:51PM PST until November 6 at 10:00PM PST by NWS San Francisco CA
Effective: Wed November 5, 2025, 6:51 PM
Expires: Thu November 6, 2025, 6:00 AM
* WHAT...For the Coastal Flood Advisory, up to 1.2 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, a long period westerly swell will result in an increased risk for sneaker waves, rip currents, and breaking waves of 14 to 19 feet with the highest waves up to 22 feet in favored locations. * WHERE...San Francisco and Monterey Bay. * WHEN...For the Coastal Flood Advisory, until 2 PM PST Saturday. For the Beach Hazards Statement, from late Wednesday night through Thursday 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. Flooding of lots, parks, and roads with only isolated road closures expected.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Remain out of the water to avoid hazardous swimming conditions.
Coastal Flood Advisory issued November 6 at 1:20AM PST until November 8 at 2:00PM PST by NWS San Francisco CA
Effective: Thu November 6, 2025, 1:20 AM
Expires: Thu November 6, 2025, 6:00 PM
* WHAT...For the Coastal Flood Advisory, up to 1.2 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, a long period westerly swell will result in an increased risk for sneaker waves and rip currents with breaking waves of 14 to 19 feet. In favored locations breaking waves could reach 25 feet. * WHERE...San Francisco and Monterey Bay. * WHEN...For the Coastal Flood Advisory, until 2 PM PST Saturday. For the Beach Hazards Statement, from 4 AM PST early this morning through Saturday morning. * 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. Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge high tide is expected to be 1.2 ft above normal (7.0 ft MLLW) at 10:58 AM Thursday, 1.1 ft above normal (7.0 ft MLLW) at 11:42 AM Friday, and 0.9 ft above normal (6.7 ft MLLW) at 12:31 PM Saturday. High tide timing varies up to 90 minutes earlier or later along the coast and throughout the Bay respectively.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Remain out of the water to avoid hazardous swimming conditions.
Beach Hazards Statement issued November 6 at 1:20AM PST until November 8 at 9:00AM PST by NWS San Francisco CA
Effective: Thu November 6, 2025, 1:20 AM
Expires: Thu November 6, 2025, 6:00 PM
* WHAT...For the Coastal Flood Advisory, up to 1.2 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, a long period westerly swell will result in an increased risk for sneaker waves and rip currents with breaking waves of 14 to 19 feet. In favored locations breaking waves could reach 25 feet. * WHERE...San Francisco and Monterey Bay. * WHEN...For the Coastal Flood Advisory, until 2 PM PST Saturday. For the Beach Hazards Statement, from 4 AM PST early this morning through Saturday morning. * 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. Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge high tide is expected to be 1.2 ft above normal (7.0 ft MLLW) at 10:58 AM Thursday, 1.1 ft above normal (7.0 ft MLLW) at 11:42 AM Friday, and 0.9 ft above normal (6.7 ft MLLW) at 12:31 PM Saturday. High tide timing varies up to 90 minutes earlier or later along the coast and throughout the Bay respectively.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Remain out of the water to avoid hazardous swimming conditions.
Coastal Flood Advisory issued November 5 at 6:51PM PST until November 8 at 2:00PM PST by NWS San Francisco CA
Effective: Wed November 5, 2025, 6:51 PM
Expires: Thu November 6, 2025, 6:00 AM
* WHAT...Up to 1.2 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Francisco Bay and San Pablo Bay. * WHEN...From 8 AM Tuesday to 2 PM PST Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Beach Hazards Statement issued November 5 at 6:51PM PST until November 6 at 10:00PM PST by NWS San Francisco CA
Effective: Wed November 5, 2025, 6:51 PM
Expires: Thu November 6, 2025, 6:00 AM
* WHAT...A long period westerly swell will result in an increased risk for sneaker waves, rip currents, and breaking waves of 14 to 19 feet with the highest waves up to 22 feet in favored locations. * WHERE...Coastal North Bay and San Francisco Peninsula Coast. * WHEN...From late Wednesday night through Thursday 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.
Coastal Flood Advisory issued November 6 at 1:20AM PST until November 8 at 2:00PM PST by NWS San Francisco CA
Effective: Thu November 6, 2025, 1:20 AM
Expires: Thu November 6, 2025, 6:00 PM
* WHAT...Up to 1.2 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Francisco Bay and San Pablo Bay. * WHEN...From 8 AM Tuesday to 2 PM PST Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge high tide is expected to be 1.2 ft above normal (7.0 ft MLLW) at 10:58 AM Thursday, 1.1 ft above normal (7.0 ft MLLW) at 11:42 AM Friday, and 0.9 ft above normal (6.7 ft MLLW) at 12:31 PM Saturday. High tide timing varies up to 90 minutes earlier or later along the coast and throughout the Bay respectively.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Beach Hazards Statement issued November 6 at 1:20AM PST until November 8 at 9:00AM PST by NWS San Francisco CA
Effective: Thu November 6, 2025, 1:20 AM
Expires: Thu November 6, 2025, 6:00 PM
* WHAT...A long period westerly swell will result in an increased risk for sneaker waves and rip currents with breaking waves of 14 to 19 feet. In favored locations breaking waves could reach 25 feet. * WHERE...Coastal North Bay and San Francisco Peninsula Coast. * WHEN...From 4 AM PST early this morning through Saturday morning. * 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.
Weather Forecast
Average Temperature: 57.1°F
Average Humidity: 95%
Wind: 8.9 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 18.87 μg/m3
Sulphur Dioxide: 3.95 μg/m3
Ozone: 50.32 μg/m3
Astronomical
Sun Transit: 11:53 AM
Sunset: 5:05 PM
Daylight: 10 hrs 24 mins
Moon Transit: 12:34 AM
Moonset: 8:19 AM
Moon Phase: Full
Moon Illumination: 97.9%
Best Times for Fishing or Hunting
Major Periods
12:04 AM - 2:34 AM8:05 AM - 10:35 AM
Minor Periods
5:19 PM - 6:49 PM7:49 AM - 9:19 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 57.1°F
Average Humidity: 96%
Wind: 7.6 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 28.63 μg/m3
Sulphur Dioxide: 4.95 μg/m3
Ozone: 42.56 μg/m3
Astronomical
Sun Transit: 11:53 AM
Sunset: 5:04 PM
Daylight: 10 hrs 22 mins
Moon Transit: 1:39 AM
Moonset: 9:36 AM
Moon Phase: Full
Moon Illumination: 93.4%
Best Times for Fishing or Hunting
Major Periods
1:09 AM - 3:39 AM9:11 AM - 11:41 AM
Minor Periods
6:17 PM - 7:47 PM9:06 AM - 10:36 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 57.4°F
Average Humidity: 88%
Wind: 6 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 29.06 μg/m3
Sulphur Dioxide: 6.01 μg/m3
Ozone: 34.32 μg/m3
Astronomical
Sun Transit: 11:53 AM
Sunset: 5:03 PM
Daylight: 10 hrs 20 mins
Moon Transit: 2:45 AM
Moonset: 10:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.7%
Best Times for Fishing or Hunting
Major Periods
2:15 AM - 4:45 AM10:17 AM - 12:47 AM
Minor Periods
7:24 PM - 8:54 PM10:15 AM - 11:45 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 64.1°F
Average Humidity: 57%
Wind: 6.5 mph
UV Index: 0.6
Air Quality
Nitrogen Dioxide: 58.99 μg/m3
Sulphur Dioxide: 5.65 μg/m3
Ozone: 18.28 μg/m3
Astronomical
Sun Transit: 11:53 AM
Sunset: 5:03 PM
Daylight: 10 hrs 18 mins
Moon Transit: 3:50 AM
Moonset: 11:41 AM
Moon Phase: Waning Gibbous
Moon Illumination: 78.1%
Best Times for Fishing or Hunting
Major Periods
3:20 AM - 5:50 AM11:20 AM - 1:50 PM
Minor Periods
8:36 PM - 10:06 PM11:11 AM - 12:41 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 64.8°F
Average Humidity: 59%
Wind: 6.3 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 75.74 μg/m3
Sulphur Dioxide: 8.14 μg/m3
Ozone: 10.54 μg/m3
Astronomical
Sun Transit: 11:53 AM
Sunset: 5:02 PM
Daylight: 10 hrs 16 mins
Moon Transit: 4:50 AM
Moonset: 12:25 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.0%
Best Times for Fishing or Hunting
Major Periods
4:20 AM - 6:50 AM12:19 AM - 2:49 PM
Minor Periods
9:49 PM - 11:19 PM11:55 AM - 1:25 PM
Action Rating: 3 out of 5
