Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

63.3°F

Measurement Time: Sunday, October 11, 2026, 2:00 PM 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, Crockett, CA (19.4 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)

Weather for San Francisco, California

Current Weather

56.9°F
Clear
Conditions: Clear
Humidity: 65%
Feels Like: 51.6°F
Wind: S 7.6 mph
Wind Gusts: 9.8 mph
Pressure: 29.72 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Sunny
Sun
H: 59°F
L: 55°F
Sunny
Mon
H: 62°F
L: 56°F
Sunny
Tue
H: 65°F
L: 56°F
Sunny
Wed
H: 69°F
L: 58°F
Sunny
Thu
H: 74°F
L: 61°F

Air Quality

AQI: 2 - Moderate
PM2.5: 12.7 μg/m3
PM10: 20.2 μg/m3
Carbon Monoxide: 131 μg/m3
Nitrogen Dioxide: 9.2 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:56 AM
Sunset: 6:38 PM
Daylight: 11 hrs 23 mins
Moonrise: 8:25 AM
Moon Transit: 1:43 PM
Moonset: 6:55 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

9:09 PM - 11:39 PM
1:13 PM - 3:43 PM

Minor Periods

6:25 PM - 7:55 PM
7:55 AM - 9:25 AM

Action Rating: 4 out of 5

Sunday, October 11, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 56.7°F
Average Humidity: 71%
Chance of Rain: 6%
Wind: 12.3 mph
UV Index: 5

Air Quality

AQI: 1 - Good
PM2.5: 9.46 μg/m3
PM10: 14.54 μg/m3
Carbon Monoxide: 131 μg/m3
Nitrogen Dioxide: 7.54 μg/m3
Sulphur Dioxide: 0.81 μg/m3
Ozone: 64.54 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:56 AM
Sunset: 6:38 PM
Daylight: 11 hrs 23 mins
Moonrise: 8:25 AM
Moon Transit: 1:43 PM
Moonset: 6:55 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

9:09 PM - 11:39 PM
1:13 PM - 3:43 PM

Minor Periods

6:25 PM - 7:55 PM
7:55 AM - 9:25 AM

Action Rating: 4 out of 5

Monday, October 12, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 58.3°F
Average Humidity: 66%
Chance of Rain: 6%
Wind: 11.2 mph
UV Index: 4.9

Air Quality

AQI: 1 - Good
PM2.5: 14.1 μg/m3
PM10: 21.24 μg/m3
Carbon Monoxide: 146.71 μg/m3
Nitrogen Dioxide: 10.48 μg/m3
Sulphur Dioxide: 1.02 μg/m3
Ozone: 70.88 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:56 AM
Sunset: 6:36 PM
Daylight: 11 hrs 21 mins
Moonrise: 9:29 AM
Moon Transit: 2:31 PM
Moonset: 7:26 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:01 PM - 4:31 PM

Minor Periods

6:56 PM - 8:26 PM
8:59 AM - 10:29 AM

Action Rating: 4 out of 5

Tuesday, October 13, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 59.4°F
Average Humidity: 66%
Chance of Rain: 6%
Wind: 9.6 mph
UV Index: 5.2

Air Quality

AQI: 1 - Good
PM2.5: 14.14 μg/m3
PM10: 17.85 μg/m3
Carbon Monoxide: 156 μg/m3
Nitrogen Dioxide: 22.61 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 47.29 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 12:55 AM
Sunset: 6:35 PM
Daylight: 11 hrs 19 mins
Moonrise: 10:34 AM
Moon Transit: 3:20 PM
Moonset: 8:03 PM
Moon Phase: New
Moon Illumination: 4.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:50 PM - 5:20 PM

Minor Periods

7:33 PM - 9:03 PM
10:04 AM - 11:34 AM

Action Rating: 3 out of 5

Wednesday, October 14, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 62.2°F
Average Humidity: 57%
Chance of Rain: 3%
Wind: 9.6 mph
UV Index: 5.1

Air Quality

AQI: 1 - Good
PM2.5: 14.23 μg/m3
PM10: 19.18 μg/m3
Carbon Monoxide: 143.42 μg/m3
Nitrogen Dioxide: 17.15 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 53.29 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:55 AM
Sunset: 6:34 PM
Daylight: 11 hrs 16 mins
Moonrise: 11:34 AM
Moon Transit: 4:11 PM
Moonset: 8:45 PM
Moon Phase: Waxing Crescent
Moon Illumination: 9.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:41 PM - 6:11 PM

Minor Periods

8:15 PM - 9:45 PM
11:04 AM - 12:34 AM

Action Rating: 3 out of 5

Thursday, October 15, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 65.5°F
Average Humidity: 50%
Chance of Rain: 2%
Wind: 10.1 mph
UV Index: 5.2

Air Quality

AQI: 2 - Moderate
PM2.5: 15.73 μg/m3
PM10: 19.58 μg/m3
Carbon Monoxide: 188.13 μg/m3
Nitrogen Dioxide: 26.24 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 43.29 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 12:55 AM
Sunset: 6:32 PM
Daylight: 11 hrs 14 mins
Moonrise: 12:31 AM
Moon Transit: 5:02 PM
Moonset: 9:34 PM
Moon Phase: Waxing Crescent
Moon Illumination: 17.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:32 PM - 7:02 PM

Minor Periods

9:04 PM - 10:34 PM
12:01 AM - 1:31 PM

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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