Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

54.7°F

Measurement Time: Thursday, January 15, 2026, 9:00 AM PST

Temperature Locations

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Local Points of Interest

Alcatraz Island

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

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

60.1°F
Sunny
Sunny
60.1°F
60.2°F
60%
NE 6 mph
11.3 mph
59.6°F
54.5°F
0 in
0%
9 mi
1017 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 63°F
L: 45°F
Sunny
Fri
H: 64°F
L: 52°F
Sunny
Sat
H: 59°F
L: 51°F
Sunny
Sun
H: 61°F
L: 53°F
Sunny
Mon
H: 61°F
L: 53°F

Air Quality

PM2.5: 30.25 μg/m3
PM10: 31.15 μg/m3
Carbon Monoxide: 553.85 μg/m3
Nitrogen Dioxide: 49.25 μg/m3
Sulphur Dioxide: 5.45 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:19 AM
Sunset: 5:15 PM
Daylight: 9 hrs 51 mins
Moonrise: 5:17 AM
Moon Transit: 9:48 AM
Moonset: 2:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

5:15 PM - 7:45 PM
9:18 AM - 11:48 AM

Minor Periods

1:48 PM - 3:18 PM
4:47 AM - 6:17 AM

Action Rating: 3 out of 5

Beach Hazards Statement issued January 15 at 3:03AM PST until January 15 at 9:00PM PST by NWS San Francisco CA

Effective: Thu January 15, 2026, 3:03 AM
Expires: Thu January 15, 2026, 9:00 PM

* WHAT...An increased risk for sneaker waves and strong rip currents with breaking waves of 7 to 12 feet. * WHERE...Pacific Coast beaches. * WHEN...Through 9 PM PST this evening. * IMPACTS...Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves.

Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.


Dense Fog Advisory issued January 15 at 3:27AM PST until January 15 at 10:00AM PST by NWS Sacramento CA

Effective: Thu January 15, 2026, 3:27 AM
Expires: Thu January 15, 2026, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Northern San Joaquin Valley, Southern Sacramento Valley and the Delta. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Thursday, January 15, 2026

Weather Forecast

Sunny
62.8°F
44.6°F
51.5°F
83%
0 in
0%
0%
8.5 mph
0.5


Air Quality

AQI: 2 - Moderate
PM2.5: 26.32 μg/m3
PM10: 28.53 μg/m3
Carbon Monoxide: 340.05 μg/m3
Nitrogen Dioxide: 46.62 μg/m3
Sulphur Dioxide: 6.69 μg/m3
Ozone: 8.56 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:19 AM
Sunset: 5:15 PM
Daylight: 9 hrs 51 mins
Moonrise: 5:17 AM
Moon Transit: 9:48 AM
Moonset: 2:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

5:15 PM - 7:45 PM
9:18 AM - 11:48 AM

Minor Periods

1:48 PM - 3:18 PM
4:47 AM - 6:17 AM

Action Rating: 3 out of 5

Friday, January 16, 2026

Weather Forecast

Sunny
64.2°F
51.8°F
56.5°F
73%
0 in
0%
0%
7.2 mph
0.5


Air Quality

AQI: 2 - Moderate
PM2.5: 24.09 μg/m3
PM10: 26.35 μg/m3
Carbon Monoxide: 334.73 μg/m3
Nitrogen Dioxide: 45.15 μg/m3
Sulphur Dioxide: 6.18 μg/m3
Ozone: 9.12 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:19 AM
Sunset: 5:16 PM
Daylight: 9 hrs 52 mins
Moonrise: 6:11 AM
Moon Transit: 10:40 AM
Moonset: 3:12 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

6:08 PM - 8:38 PM
10:10 AM - 12:40 AM

Minor Periods

2:42 PM - 4:12 PM
5:41 AM - 7:11 AM

Action Rating: 3 out of 5

Saturday, January 17, 2026

Weather Forecast

Sunny
59.2°F
51.4°F
55.2°F
70%
0 in
0%
0%
7.4 mph
0.5


Air Quality

AQI: 2 - Moderate
PM2.5: 26.26 μg/m3
PM10: 27.98 μg/m3
Carbon Monoxide: 363.87 μg/m3
Nitrogen Dioxide: 44.35 μg/m3
Sulphur Dioxide: 6.59 μg/m3
Ozone: 8.64 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:19 AM
Sunset: 5:17 PM
Daylight: 9 hrs 54 mins
Moonrise: 6:57 AM
Moon Transit: 11:33 AM
Moonset: 4:13 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

7:00 PM - 9:30 PM
11:03 AM - 1:33 PM

Minor Periods

3:43 PM - 5:13 PM
6:27 AM - 7:57 AM

Action Rating: 4 out of 5

Sunday, January 18, 2026

Weather Forecast

Sunny
61.2°F
52.8°F
56.3°F
63%
0 in
0%
0%
7.2 mph
0.5


Air Quality

AQI: 2 - Moderate
PM2.5: 32.71 μg/m3
PM10: 34.93 μg/m3
Carbon Monoxide: 620.58 μg/m3
Nitrogen Dioxide: 50.08 μg/m3
Sulphur Dioxide: 7.31 μg/m3
Ozone: 3 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:20 AM
Sunset: 5:18 PM
Daylight: 9 hrs 55 mins
Moonrise: 7:37 AM
Moon Transit: 12:24 AM
Moonset: 5:17 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

7:50 PM - 10:20 PM
11:54 AM - 2:24 PM

Minor Periods

4:47 PM - 6:17 PM
7:07 AM - 8:37 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Sunny
61.4°F
52.6°F
55.7°F
63%
0 in
0%
0%
6.5 mph
0


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 12:20 AM
Sunset: 5:19 PM
Daylight: 9 hrs 57 mins
Moonrise: 8:12 AM
Moon Transit: 1:13 PM
Moonset: 6:23 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

8:39 PM - 11:09 PM
12:43 AM - 3:13 PM

Minor Periods

5:53 PM - 7:23 PM
7:42 AM - 9:12 AM

Action Rating: 4 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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