Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

62.2°F

Measurement Time: Sunday, July 12, 2026, 1:00 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

63°F
Partly cloudy
Partly cloudy
63°F
58.1°F
78%
S 5.6 mph
7.8 mph
55.6°F
55.1°F
0 in
75%
9 mi
1014 mbar
1.6

Five Day Weather Forecast

Sunny
Sun
H: 67°F
L: 55°F
Sunny
Mon
H: 69°F
L: 58°F
Sunny
Tue
H: 69°F
L: 58°F
Sunny
Wed
H: 68°F
L: 56°F
Sunny
Thu
H: 66°F
L: 56°F

Air Quality

AQI: 1 - Good
PM2.5: 10 μg/m3
PM10: 13.6 μg/m3
Carbon Monoxide: 88 μg/m3
Nitrogen Dioxide: 7.7 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 38 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:15 PM
Sunset: 8:33 PM
Daylight: 14 hrs 35 mins
Moonrise: 3:37 AM
Moon Transit: 11:35 AM
Moonset: 7:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

7:07 PM - 9:37 PM
11:05 AM - 1:35 PM

Minor Periods

7:02 PM - 8:32 PM
3:07 AM - 4:37 AM

Action Rating: 3 out of 5

Small Craft Advisory issued July 11 at 8:02PM PDT until July 13 at 9:00AM PDT by NWS San Francisco CA

Effective: Sat July 11, 2026, 8:02 PM
Expires: Sun July 12, 2026, 4:15 AM

* WHAT...Northwest winds 10 to 20 kt. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 9 AM PDT Monday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Sunday, July 12, 2026

Weather Forecast

Sunny
67.3°F
55.2°F
60.6°F
82%
0 in
11%
0%
11.6 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 10.95 μg/m3
PM10: 14.81 μg/m3
Carbon Monoxide: 87.83 μg/m3
Nitrogen Dioxide: 10.07 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 43.96 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:15 PM
Sunset: 8:33 PM
Daylight: 14 hrs 35 mins
Moonrise: 3:37 AM
Moon Transit: 11:35 AM
Moonset: 7:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

7:07 PM - 9:37 PM
11:05 AM - 1:35 PM

Minor Periods

7:02 PM - 8:32 PM
3:07 AM - 4:37 AM

Action Rating: 3 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
69°F
58.1°F
63.3°F
67%
0 in
7%
0%
9.6 mph
7.7


Air Quality

AQI: 1 - Good
PM2.5: 13.78 μg/m3
PM10: 17.26 μg/m3
Carbon Monoxide: 92.88 μg/m3
Nitrogen Dioxide: 19.65 μg/m3
Sulphur Dioxide: 1.46 μg/m3
Ozone: 46.58 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:15 PM
Sunset: 8:33 PM
Daylight: 14 hrs 34 mins
Moonrise: 4:48 AM
Moon Transit: 12:41 AM
Moonset: 8:29 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

8:13 PM - 10:43 PM
12:11 AM - 2:41 PM

Minor Periods

7:59 PM - 9:29 PM
4:18 AM - 5:48 AM

Action Rating: 5 out of 5

Tuesday, July 14, 2026

Weather Forecast

Sunny
68.8°F
58.3°F
63°F
66%
0 in
5%
0%
11 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 13.39 μg/m3
PM10: 17.52 μg/m3
Carbon Monoxide: 95.79 μg/m3
Nitrogen Dioxide: 17.2 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 45.71 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:15 PM
Sunset: 8:32 PM
Daylight: 14 hrs 33 mins
Moonrise: 6:05 AM
Moon Transit: 1:44 PM
Moonset: 9:14 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

9:14 PM - 11:44 PM
1:14 PM - 3:44 PM

Minor Periods

8:44 PM - 10:14 PM
5:35 AM - 7:05 AM

Action Rating: 5 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
67.6°F
55.8°F
61.1°F
72%
0 in
7%
0%
11.6 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 11.56 μg/m3
PM10: 15.83 μg/m3
Carbon Monoxide: 101.33 μg/m3
Nitrogen Dioxide: 9.61 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 46.71 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:15 PM
Sunset: 8:32 PM
Daylight: 14 hrs 32 mins
Moonrise: 7:23 AM
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 AM
2:12 PM - 4:42 PM

Minor Periods

9:20 PM - 10:50 PM
6:53 AM - 8:23 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
66.2°F
55.9°F
60.3°F
76%
0 in
8%
0%
12.5 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 7.72 μg/m3
PM10: 9.87 μg/m3
Carbon Monoxide: 118 μg/m3
Nitrogen Dioxide: 7.35 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 37.5 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:15 PM
Sunset: 8:31 PM
Daylight: 14 hrs 30 mins
Moonrise: 8:39 AM
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 AM
3:05 PM - 5:35 PM

Minor Periods

9:51 PM - 11:21 PM
8:09 AM - 9:39 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.

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