Water Temperature of San Francisco Bay in San Francisco, CA
Current Water Temperature
Measurement Time: Wednesday, July 15, 2026, 2:00 AM PDT
Temperature Locations
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Local Points of Interest
Alcatraz IslandStation Name: SAN FRANCISCO BAY A NE SHORE ALCATRAZ ISLAND CA
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet
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 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

Five Day Weather Forecast

Wed
H: 80°F
L: 57°F

Thu
H: 65°F
L: 56°F

Fri
H: 63°F
L: 55°F

Sat
H: 64°F
L: 56°F

Sun
H: 65°F
L: 55°F
Air Quality
Nitrogen Dioxide: 5.9 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 49 μg/m3
Astronomical
Sun Transit: 1:15 PM
Sunset: 8:32 PM
Daylight: 14 hrs 32 mins
Moon Transit: 2:42 PM
Moonset: 9:50 PM
Moon Phase: New
Moon Illumination: 0.2%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:12 PM - 4:42 PM
Minor Periods
9:20 PM - 10:50 PM6:53 AM - 8:23 AM
Action Rating: 3 out of 5
Small Craft Advisory issued July 15 at 2:24AM PDT until July 15 at 9:00PM PDT by NWS San Francisco CA
Effective: Wed July 15, 2026, 2:24 AM
Expires: Wed July 15, 2026, 10:30 AM
* WHAT...Southwest winds 10 to 20 kt and a moderate chop expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 3 PM this afternoon to 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.
Small Craft Advisory issued July 15 at 8:34AM PDT until July 15 at 9:00PM PDT by NWS San Francisco CA
Effective: Wed July 15, 2026, 8:34 AM
Expires: Wed July 15, 2026, 4:45 PM
* WHAT...Southwest winds 10 to 15 kt with gusts to 25 kt and a moderate chop expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 3 PM this afternoon to 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.
Weather Forecast
Air Quality
Nitrogen Dioxide: 9.42 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 48.38 μg/m3
Astronomical
Sun Transit: 1:15 PM
Sunset: 8:32 PM
Daylight: 14 hrs 32 mins
Moon Transit: 2:42 PM
Moonset: 9:50 PM
Moon Phase: New
Moon Illumination: 0.2%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:12 PM - 4:42 PM
Minor Periods
9:20 PM - 10:50 PM6:53 AM - 8:23 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.4 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 55.92 μg/m3
Astronomical
Sun Transit: 1:15 PM
Sunset: 8:31 PM
Daylight: 14 hrs 30 mins
Moon Transit: 3:35 PM
Moonset: 10:21 PM
Moon Phase: New
Moon Illumination: 2.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM3:05 PM - 5:35 PM
Minor Periods
9:51 PM - 11:21 PM8:09 AM - 9:39 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.82 μg/m3
Sulphur Dioxide: 0.81 μg/m3
Ozone: 61.96 μg/m3
Astronomical
Sun Transit: 1:15 PM
Sunset: 8:30 PM
Daylight: 14 hrs 29 mins
Moon Transit: 4:23 PM
Moonset: 10:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM3:53 PM - 6:23 PM
Minor Periods
10:17 PM - 11:47 PM9:20 AM - 10:50 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.31 μg/m3
Sulphur Dioxide: 0.89 μg/m3
Ozone: 54.33 μg/m3
Astronomical
Sun Transit: 1:16 PM
Sunset: 8:30 PM
Daylight: 14 hrs 28 mins
Moon Transit: 5:08 PM
Moonset: 11:10 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM4:38 PM - 7:08 PM
Minor Periods
12:00 AM - 12:00 AM10:27 AM - 11:57 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.6 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 59 μg/m3
Astronomical
Sun Transit: 1:16 PM
Sunset: 8:29 PM
Daylight: 14 hrs 26 mins
Moon Transit: 5:52 PM
Moonset: 12:10 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%
Best Times for Fishing or Hunting
Major Periods
12:33 AM - 3:03 AM5:22 PM - 7:52 PM
Minor Periods
11:32 AM - 1:02 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
