Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

62.8°F

Measurement Time: Monday, July 27, 2026, 4:00 AM PDT

Temperature Locations

View Nearby Locations     View All California Locations     View Locations Near Me

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

63.7°F
Cloudy
Cloudy
63.7°F
76°F
73%
WSW 9.8 mph
11.6 mph
70.3°F
60.3°F
0 in
75%
10 mi
1011 mbar
8.9

Five Day Weather Forecast

Sunny
Mon
H: 73°F
L: 55°F
Sunny
Tue
H: 66°F
L: 57°F
Sunny
Wed
H: 67°F
L: 58°F
Sunny
Thu
H: 66°F
L: 57°F
Sunny
Fri
H: 68°F
L: 56°F

Air Quality

AQI: 1 - Good
PM2.5: 10.8 μg/m3
PM10: 16.8 μg/m3
Carbon Monoxide: 91 μg/m3
Nitrogen Dioxide: 3.9 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:16 PM
Sunset: 8:23 PM
Daylight: 14 hrs 14 mins
Moonrise: 7:36 PM
Moon Transit: 12:00 AM
Moonset: 4:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:54 AM - 9:24 AM

Minor Periods

7:06 PM - 8:36 PM
3:33 AM - 5:03 AM

Action Rating: 3 out of 5

Small Craft Advisory issued July 27 at 2:51AM PDT until July 27 at 9:00PM PDT by NWS San Francisco CA

Effective: Mon July 27, 2026, 2:51 AM
Expires: Mon July 27, 2026, 11:00 AM

* WHAT...West winds 10 to 20 kt and choppy waters expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 9 AM to 9 PM PDT Monday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Monday, July 27, 2026

Weather Forecast

Sunny
72.9°F
54.7°F
62.6°F
80%
0 in
10%
0%
15.7 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 10.19 μg/m3
PM10: 15.57 μg/m3
Carbon Monoxide: 92.63 μg/m3
Nitrogen Dioxide: 5.63 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 57.83 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:16 PM
Sunset: 8:23 PM
Daylight: 14 hrs 14 mins
Moonrise: 7:36 PM
Moon Transit: 12:00 AM
Moonset: 4:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:54 AM - 9:24 AM

Minor Periods

7:06 PM - 8:36 PM
3:33 AM - 5:03 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
66.3°F
57.4°F
61.2°F
80%
0 in
10%
0%
14.1 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 8.72 μg/m3
PM10: 13.03 μg/m3
Carbon Monoxide: 96.58 μg/m3
Nitrogen Dioxide: 6.3 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 41.75 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:16 PM
Sunset: 8:22 PM
Daylight: 14 hrs 12 mins
Moonrise: 8:13 PM
Moon Transit: 12:17 AM
Moonset: 5:03 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:43 AM - 10:13 AM

Minor Periods

7:43 PM - 9:13 PM
4:33 AM - 6:03 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Sunny
66.5°F
57.5°F
61.4°F
81%
0 in
11%
0%
14.1 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 9 μg/m3
PM10: 13.68 μg/m3
Carbon Monoxide: 100.38 μg/m3
Nitrogen Dioxide: 7.39 μg/m3
Sulphur Dioxide: 0.66 μg/m3
Ozone: 35.29 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:16 PM
Sunset: 8:21 PM
Daylight: 14 hrs 10 mins
Moonrise: 8:43 PM
Moon Transit: 1:06 AM
Moonset: 6:06 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 AM
8:31 AM - 11:01 AM

Minor Periods

8:13 PM - 9:43 PM
5:36 AM - 7:06 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Sunny
65.9°F
56.7°F
60.7°F
79%
0 in
9%
0%
13.6 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 11.65 μg/m3
PM10: 17.7 μg/m3
Carbon Monoxide: 98.14 μg/m3
Nitrogen Dioxide: 7.38 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 48.79 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:16 PM
Sunset: 8:20 PM
Daylight: 14 hrs 9 mins
Moonrise: 9:10 PM
Moon Transit: 1:52 AM
Moonset: 7:09 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:22 AM - 3:52 AM
9:17 AM - 11:47 AM

Minor Periods

8:40 PM - 10:10 PM
6:39 AM - 8:09 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Sunny
67.6°F
56.3°F
61.2°F
77%
0 in
8%
0%
10.7 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 11.05 μg/m3
PM10: 16.85 μg/m3
Carbon Monoxide: 116.5 μg/m3
Nitrogen Dioxide: 10.92 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 39.33 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:16 PM
Sunset: 8:19 PM
Daylight: 14 hrs 7 mins
Moonrise: 9:34 PM
Moon Transit: 2:36 AM
Moonset: 8:12 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:06 AM - 4:36 AM
10:01 AM - 12:31 AM

Minor Periods

9:04 PM - 10:34 PM
7:42 AM - 9:12 AM

Action Rating: 3 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.

Webcams Near San Francisco, CA

Sponsored Content