Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

62.8°F 17.1°C
Cool Brisk & Refreshing
62.8°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Feels brisk on entry. Great for short dips; wetsuit recommended for extended swimming or water sports.

Measurement Time: Tuesday, November 10, 2026, 5:00 PM PST

Temperature Locations

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Local Points of Interest

Alcatraz Island

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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)
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

53.6°F
Clear
Conditions: Clear
Humidity: 82%
Feels Like: 52°F
Wind: N 2.4 mph
Wind Gusts: 2.7 mph
Pressure: 30.11 in
Precipitation: 0 in
Cloud Cover: 3%
Visibility: 8.4 mi
UV Index: 0

Weather Forecast

Fog
Wed
H: 69°F
L: 52°F
Overcast
Thu
H: 67°F
L: 57°F
Moderate Rain Showers
Fri
H: 63°F
L: 58°F
Light Drizzle
Sat
H: 63°F
L: 57°F
Moderate Rain Showers
Sun
H: 64°F
L: 55°F

Air Quality

EPA Index 2 • Moderate

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

PM2.5
21.8 μg/m³
Moderate
PM10
22.8 μg/m³
Good
Ozone (O3)
5 μg/m³
Photochemical
NO2
36.8 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
209 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 15m daylight
Sunrise 6:46 AM
Solar Noon 11:53 AM
Sunset 5:01 PM
Moon
New • 2%
Moonrise 9:21 AM
Transit 1:55 PM
Moonset 6:28 PM

Best Times for Fishing or Hunting

Major Periods

12:59 AM - 3:29 AM
1:25 PM - 3:55 PM

Minor Periods

8:51 AM - 10:21 AM
5:58 PM - 7:28 PM
Action Rating:
Good Action 3/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Fog
Average Temperature: 58.8°F
Average Humidity: 84%
Chance of Rain: 0%
Wind: 9.9 mph
UV Index: 4

Air Quality

EPA Index 2 • Moderate
PM2.5
18.2 μg/m³
Moderate
PM10
19.1 μg/m³
Good
Ozone (O3)
30.5 μg/m³
Photochemical
NO2
29.7 μg/m³
Nitrogen Dioxide
SO2
2 μg/m³
Sulfur Dioxide
CO
282.9 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 15m daylight
Sunrise 6:46 AM
Solar Noon 11:53 AM
Sunset 5:01 PM
Moon
New • 2%
Moonrise 9:21 AM
Transit 1:55 PM
Moonset 6:28 PM

Best Times for Fishing or Hunting

Major Periods

12:59 AM - 3:29 AM
1:25 PM - 3:55 PM

Minor Periods

8:51 AM - 10:21 AM
5:58 PM - 7:28 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 61.2°F
Average Humidity: 79%
Chance of Rain: 30%
Wind: 14.4 mph
UV Index: 3.6

Air Quality

EPA Index 2 • Moderate
PM2.5
20.3 μg/m³
Moderate
PM10
22.4 μg/m³
Good
Ozone (O3)
34 μg/m³
Photochemical
NO2
27.9 μg/m³
Nitrogen Dioxide
SO2
1.4 μg/m³
Sulfur Dioxide
CO
341 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 13m daylight
Sunrise 6:47 AM
Solar Noon 11:53 AM
Sunset 5:00 PM
Moon
Waxing Crescent • 6%
Moonrise 10:14 AM
Transit 2:46 PM
Moonset 7:20 PM

Best Times for Fishing or Hunting

Major Periods

1:50 AM - 4:20 AM
2:16 PM - 4:46 PM

Minor Periods

9:44 AM - 11:14 AM
6:50 PM - 8:20 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Moderate Rain Showers
Average Temperature: 60.6°F
Average Humidity: 75%
Chance of Rain: 97%
Wind: 23.4 mph
UV Index: 2.8

Air Quality

EPA Index 2 • Moderate
PM2.5
7.3 μg/m³
Good
PM10
10.9 μg/m³
Good
Ozone (O3)
68 μg/m³
Photochemical
NO2
8.9 μg/m³
Nitrogen Dioxide
SO2
0.5 μg/m³
Sulfur Dioxide
CO
127.9 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 11m daylight
Sunrise 6:48 AM
Solar Noon 11:54 AM
Sunset 5:00 PM
Moon
Waxing Crescent • 13%
Moonrise 11:00 AM
Transit 3:36 PM
Moonset 8:18 PM

Best Times for Fishing or Hunting

Major Periods

2:41 AM - 5:11 AM
3:06 PM - 5:36 PM

Minor Periods

10:30 AM - 12:00 PM
7:48 PM - 9:18 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 59.5°F
Average Humidity: 67%
Chance of Rain: 65%
Wind: 11.2 mph
UV Index: 3.5

Air Quality

EPA Index 2 • Moderate
PM2.5
13.5 μg/m³
Moderate
PM10
18 μg/m³
Good
Ozone (O3)
41.3 μg/m³
Photochemical
NO2
21 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
163.7 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 9m daylight
Sunrise 6:49 AM
Solar Noon 11:54 AM
Sunset 4:59 PM
Moon
Waxing Crescent • 21%
Moonrise 11:38 AM
Transit 4:25 PM
Moonset 9:17 PM

Best Times for Fishing or Hunting

Major Periods

3:31 AM - 6:01 AM
3:55 PM - 6:25 PM

Minor Periods

11:08 AM - 12:38 PM
8:47 PM - 10:17 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Moderate Rain Showers
Average Temperature: 59°F
Average Humidity: 74%
Chance of Rain: 71%
Wind: 13.4 mph
UV Index: 3.5

Air Quality

EPA Index 2 • Moderate
PM2.5
18.3 μg/m³
Moderate
PM10
21.9 μg/m³
Good
Ozone (O3)
28.4 μg/m³
Photochemical
NO2
29.2 μg/m³
Nitrogen Dioxide
SO2
1.3 μg/m³
Sulfur Dioxide
CO
245.7 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 8m daylight
Sunrise 6:50 AM
Solar Noon 11:54 AM
Sunset 4:58 PM
Moon
Waxing Crescent • 31%
Moonrise 12:11 PM
Transit 5:11 PM
Moonset 10:19 PM

Best Times for Fishing or Hunting

Major Periods

4:18 AM - 6:48 AM
4:41 PM - 7:11 PM

Minor Periods

11:41 AM - 1:11 PM
9:49 PM - 11:19 PM
Action Rating:
Very Good 4/5
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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