Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

62.6°F

Measurement Time: Tuesday, July 21, 2026, 2:00 AM PDT

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

73.9°F
Partly cloudy
Partly cloudy
77.2°F
76.2°F
66%
WSW 3.1 mph
5.1 mph
71.6°F
55.2°F
0 in
75%
9 mi
1014 mbar
5

Five Day Weather Forecast

Sunny
Tue
H: 83°F
L: 57°F
Partly Cloudy
Wed
H: 69°F
L: 60°F
Sunny
Thu
H: 67°F
L: 57°F
Sunny
Fri
H: 67°F
L: 57°F
Sunny
Sat
H: 69°F
L: 57°F

Air Quality

AQI: 1 - Good
PM2.5: 12.1 μg/m3
PM10: 15.4 μg/m3
Carbon Monoxide: 115 μg/m3
Nitrogen Dioxide: 16.7 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 42 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:16 PM
Sunset: 8:28 PM
Daylight: 14 hrs 23 mins
Moonrise: 2:07 PM
Moon Transit: 7:20 PM
Moonset: 12:59 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
6:50 PM - 9:20 PM

Minor Periods

1:37 PM - 3:07 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
83.3°F
57°F
68.3°F
67%
0 in
5%
0%
12.1 mph
10.4


Air Quality

AQI: 1 - Good
PM2.5: 11.19 μg/m3
PM10: 14.54 μg/m3
Carbon Monoxide: 106.29 μg/m3
Nitrogen Dioxide: 16.28 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 47.04 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:16 PM
Sunset: 8:28 PM
Daylight: 14 hrs 23 mins
Moonrise: 2:07 PM
Moon Transit: 7:20 PM
Moonset: 12:59 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
6:50 PM - 9:20 PM

Minor Periods

1:37 PM - 3:07 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Partly Cloudy
69°F
60°F
64.9°F
83%
0 in
20%
0%
15.9 mph
10.5


Air Quality

AQI: 1 - Good
PM2.5: 10.97 μg/m3
PM10: 15.56 μg/m3
Carbon Monoxide: 104 μg/m3
Nitrogen Dioxide: 10.63 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 49.96 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:16 PM
Sunset: 8:27 PM
Daylight: 14 hrs 22 mins
Moonrise: 3:09 PM
Moon Transit: 8:06 PM
Moonset: 12:27 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

2:45 AM - 5:15 AM
7:36 PM - 10:06 PM

Minor Periods

2:39 PM - 4:09 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
66.6°F
57.4°F
61.4°F
80%
0 in
13%
0%
14.8 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 9.73 μg/m3
PM10: 13.85 μg/m3
Carbon Monoxide: 97.42 μg/m3
Nitrogen Dioxide: 9.38 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 44.13 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:16 PM
Sunset: 8:26 PM
Daylight: 14 hrs 20 mins
Moonrise: 4:11 PM
Moon Transit: 8:54 PM
Moonset: 12:57 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

3:32 AM - 6:02 AM
8:24 PM - 10:54 PM

Minor Periods

3:41 PM - 5:11 PM
12:27 AM - 1:57 AM

Action Rating: 4 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
67.3°F
57.1°F
61.9°F
77%
0 in
8%
0%
14.8 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 8.41 μg/m3
PM10: 11.99 μg/m3
Carbon Monoxide: 100.71 μg/m3
Nitrogen Dioxide: 7.02 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 54.04 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:16 PM
Sunset: 8:26 PM
Daylight: 14 hrs 19 mins
Moonrise: 5:10 PM
Moon Transit: 9:44 PM
Moonset: 1:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

4:20 AM - 6:50 AM
9:14 PM - 11:44 PM

Minor Periods

4:40 PM - 6:10 PM
1:04 AM - 2:34 AM

Action Rating: 2 out of 5

Saturday, July 25, 2026

Weather Forecast

Sunny
68.8°F
57.4°F
62.5°F
77%
0 in
8%
0%
14.3 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 10.25 μg/m3
PM10: 14.95 μg/m3
Carbon Monoxide: 107 μg/m3
Nitrogen Dioxide: 6.17 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 51.17 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:16 PM
Sunset: 8:25 PM
Daylight: 14 hrs 17 mins
Moonrise: 6:05 PM
Moon Transit: 10:35 PM
Moonset: 2:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
12:00 AM - 12:00 AM

Minor Periods

5:35 PM - 7:05 PM
1:47 AM - 3:17 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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