Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

63.0°F 17.2°C
Cool Brisk & Refreshing
63.0°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: Friday, November 13, 2026, 8:00 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)

Marine Weather for San Francisco Bay in San Francisco, CA

Marine Weather

Coastal & Marine Conditions
Open-Meteo Marine
11.9ft 3.6 m
High / Hazardous Dangerous sea state with high swells and breaking waves.
Wave Period 16s
Wave Direction 278° W
Swell Waves
11.9 ft
13.4s • 278° W
Wind Waves / Chop
0.0 ft
-- • 170° S
Ocean Current
0.3 mph
0.3 kn • 225° SW
Sea Surface Temp
63.7°F
Equivalent: 17.6°C

High & Low Tide Forecast

Falling (Ebb)
Next Tide: Low 12:00 PM (-1.6 ft)
0.0 ft (MSL) Fri, Nov 13 6 PM 12 AM 6 AM 12 PM 6 PM 12 AM Sat, Nov 14 Sun, Nov 15 ▲ High 7:00 PM +2.4 ft ▼ Low 10:00 PM +1.8 ft ▲ High 4:00 AM +3.4 ft ▼ Low 12:00 PM -1.6 ft ▲ High 8:00 PM +2.5 ft ▼ Low 12:00 AM +1.8 ft NOW
High Tide Fri, Nov 13
7:00 PM
+2.4 ft (0.74 m)
Low Tide Fri, Nov 13
10:00 PM
+1.8 ft (0.56 m)
High Tide Sat, Nov 14
4:00 AM
+3.4 ft (1.05 m)
Low Tide Sat, Nov 14
12:00 PM
-1.6 ft (-0.50 m)
Open-Meteo Tidal Model (Mean Sea Level MSL datum) • Times in station local timezone.

5-Day Marine Wave Forecast

Today
Nov 14
11.9 ft
16s • W
Sun
Nov 15
9.2 ft
14.2s • W
Mon
Nov 16
9.4 ft
14.2s • W
Tue
Nov 17
7.4 ft
12.4s • W
Wed
Nov 18
9.7 ft
12.3s • W

Weather for San Francisco, California

Current Weather

54°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 90%
Feels Like: 51.1°F
Wind: SE 7.3 mph
Wind Gusts: 12.1 mph
Pressure: 29.88 in
Precipitation: 0 in
Cloud Cover: 51%
Visibility: 8.6 mi
UV Index: 0

Five-Day Weather Forecast

Overcast
Sat
H: 63°F
L: 53°F
Heavy Rain
Sun
H: 62°F
L: 55°F
Moderate Drizzle
Mon
H: 59°F
L: 55°F
Overcast
Tue
H: 61°F
L: 52°F
Violent Rain Showers
Wed
H: 59°F
L: 56°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
12.7 μg/m³
Moderate
PM10
15.4 μg/m³
Good
Ozone (O3)
16 μg/m³
Photochemical
NO2
24.4 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
181 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
Saturday, November 14, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 56.5°F
Average Humidity: 84%
Chance of Rain: 14%
Wind: 8.1 mph
UV Index: 3.9

Air Quality

EPA Index 2 • Moderate
PM2.5
13.2 μg/m³
Moderate
PM10
17.8 μg/m³
Good
Ozone (O3)
43 μg/m³
Photochemical
NO2
18.7 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
163.8 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: Heavy Rain
Average Temperature: 56.5°F
Average Humidity: 88%
Chance of Rain: 98%
Wind: 12.4 mph
UV Index: 1.6

Air Quality

EPA Index 2 • Moderate
PM2.5
9.8 μg/m³
Good
PM10
13.4 μg/m³
Good
Ozone (O3)
47 μg/m³
Photochemical
NO2
17.4 μg/m³
Nitrogen Dioxide
SO2
0.8 μg/m³
Sulfur Dioxide
CO
147.2 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
Monday, November 16, 2026

Weather Forecast

Conditions: Moderate Drizzle
Average Temperature: 57°F
Average Humidity: 66%
Chance of Rain: 57%
Wind: 12.2 mph
UV Index: 3.6

Air Quality

EPA Index 2 • Moderate
PM2.5
7.8 μg/m³
Good
PM10
11.2 μg/m³
Good
Ozone (O3)
62 μg/m³
Photochemical
NO2
9.7 μg/m³
Nitrogen Dioxide
SO2
0.7 μg/m³
Sulfur Dioxide
CO
127.9 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 6m daylight
Sunrise 6:51 AM
Solar Noon 11:54 AM
Sunset 4:57 PM
Moon
First Quarter • 42%
Moonrise 12:40 PM
Transit 5:55 PM
Moonset 11:19 PM

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
5:25 PM - 7:55 PM

Minor Periods

12:10 PM - 1:40 PM
10:49 PM - 12:19 AM
Action Rating:
Good Action 3/5
Tuesday, November 17, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 56.1°F
Average Humidity: 64%
Chance of Rain: 66%
Wind: 12.6 mph
UV Index: 3.7

Air Quality

EPA Index 1 • Good
PM2.5
8.4 μg/m³
Good
PM10
10.1 μg/m³
Good
Ozone (O3)
45 μg/m³
Photochemical
NO2
17.5 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
162.8 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 4m daylight
Sunrise 6:53 AM
Solar Noon 11:54 AM
Sunset 4:57 PM
Moon
First Quarter • 54%
Moonrise 1:05 PM
Transit 6:38 PM
Moonset 1:30 AM

Best Times for Fishing or Hunting

Major Periods

5:47 AM - 8:17 AM
6:08 PM - 8:38 PM

Minor Periods

1:00 AM - 2:30 AM
12:35 PM - 2:05 PM
Action Rating:
Fair Action 2/5
Wednesday, November 18, 2026

Weather Forecast

Conditions: Violent Rain Showers
Average Temperature: 57.4°F
Average Humidity: 79%
Chance of Rain: 94%
Wind: 26.6 mph
UV Index: 0.5

Air Quality

EPA Index 1 • Good
PM2.5
8.1 μg/m³
Good
PM10
12.6 μg/m³
Good
Ozone (O3)
74.8 μg/m³
Photochemical
NO2
6.6 μg/m³
Nitrogen Dioxide
SO2
0.6 μg/m³
Sulfur Dioxide
CO
158.1 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 3m daylight
Sunrise 6:54 AM
Solar Noon 11:54 AM
Sunset 4:56 PM
Moon
First Quarter • 65%
Moonrise 1:29 PM
Transit 7:21 PM
Moonset 12:21 AM

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
6:51 PM - 9:21 PM

Minor Periods

12:59 PM - 2:29 PM
11:51 PM - 1:21 AM
Action Rating:
Good Action 3/5
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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