Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

64.8°F

Measurement Time: Tuesday, September 16, 2025, 3:00 AM PDT

Temperature Locations

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Local Points of Interest

The Embarcadero; Telegraph Hill

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San Francisco Bay

Station Name: SAN FRANCISCO BAY A PIER 17 A SAN FRANCISCO CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 23 feet / 7 meters

Nearest Address:
Pier 17
San Francisco, CA 94111
San Francisco County

GPS Coordinates: 37.80305, -122.3973083

Nearby Water Temperatures

San Francisco Bay, San Francisco, CA (2.1 mi)
San Francisco Bay, San Francisco, CA (3.8 mi)
San Francisco Bay, Alameda, CA (5.7 mi)
Rodeo Pond, Sausalito, CA (7.2 mi)
Rodeo Lagoon, Sausalito, CA (7.4 mi)
Rodeo Lagoon, Sausalito, CA (7.7 mi)
San Francisco Bay, Richmond, CA (8.7 mi)
San Francisco Bay, San Rafael, CA (9.5 mi)
San Francisco Bay, San Mateo, CA (14.6 mi)
Carquinez Strait, Martinez, CA (21.8 mi)
Redwood Creek, Redwood City, CA (22.9 mi)
Pacific Ocean, San Francisco, CA (24.4 mi)
San Francisco Bay, Menlo Park, CA (25.6 mi)
Suisun Bay, Concord, CA (26.2 mi)
Coyote Creek, Alviso, CA (31.1 mi)

Weather for San Francisco, California

Current Weather

61°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 100%
Feels Like: 61°F
Wind: WNW 2.7 mph
Wind Gusts: 4.7 mph
Pressure: 29.98 in
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 8 mi
UV Index: 4.8

Five Day Weather Forecast

Partly Cloudy
Tue
H: 64°F
L: 57°F
Mist
Wed
H: 66°F
L: 55°F
Fog
Thu
H: 60°F
L: 57°F
Cloudy
Fri
H: 67°F
L: 57°F
Sunny
Sat
H: 67°F
L: 60°F

Air Quality

AQI: 2 - Moderate
PM2.5: 26.09 μg/m3
PM10: 29.79 μg/m3
Carbon Monoxide: 327.45 μg/m3
Nitrogen Dioxide: 30.34 μg/m3
Sulphur Dioxide: 4.81 μg/m3
Ozone: 70 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 1:04 PM
Sunset: 7:15 PM
Daylight: 12 hrs 22 mins
Moonrise: 1:17 AM
Moon Transit: 9:06 AM
Moonset: 4:48 PM
Moon Phase: Last Quarter
Moon Illumination: 23.8%

Best Times for Fishing or Hunting

Major Periods

8:36 AM - 11:06 AM
4:35 PM - 7:05 PM

Minor Periods

4:18 PM - 5:48 PM
12:47 AM - 2:17 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued September 16 at 2:54AM PDT until September 16 at 10:00AM PDT by NWS San Francisco CA

Effective: Tue September 16, 2025, 2:54 AM
Expires: Tue September 16, 2025, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Northern Monterey Bay, and San Francisco Peninsula Coast. * WHEN...Until 10 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. Limited visibility will result in hazardous driving conditions.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued September 16 at 2:54AM PDT until September 16 at 10:00AM PDT by NWS San Francisco CA

Effective: Tue September 16, 2025, 2:54 AM
Expires: Tue September 16, 2025, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Northern Monterey Bay, and San Francisco Peninsula Coast. * WHEN...Until 10 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. Limited visibility will result in hazardous driving conditions.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Tuesday, September 16, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 60.2°F
Average Humidity: 91%
Chance of Rain: 0%
Wind: 10.1 mph
UV Index: 1.7

Air Quality

AQI: 2 - Moderate
PM2.5: 30.74 μg/m3
PM10: 32.58 μg/m3
Carbon Monoxide: 318.2 μg/m3
Nitrogen Dioxide: 51.54 μg/m3
Sulphur Dioxide: 9.09 μg/m3
Ozone: 48.28 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 1:04 PM
Sunset: 7:15 PM
Daylight: 12 hrs 22 mins
Moonrise: 1:17 AM
Moon Transit: 9:06 AM
Moonset: 4:48 PM
Moon Phase: Last Quarter
Moon Illumination: 23.8%

Best Times for Fishing or Hunting

Major Periods

8:36 AM - 11:06 AM
4:35 PM - 7:05 PM

Minor Periods

4:18 PM - 5:48 PM
12:47 AM - 2:17 AM

Action Rating: 3 out of 5

Wednesday, September 17, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 59.2°F
Average Humidity: 90%
Chance of Rain: 0%
Wind: 9.4 mph
UV Index: 1.7

Air Quality

AQI: 2 - Moderate
PM2.5: 21.48 μg/m3
PM10: 24.51 μg/m3
Carbon Monoxide: 305.69 μg/m3
Nitrogen Dioxide: 29.29 μg/m3
Sulphur Dioxide: 4.65 μg/m3
Ozone: 57.04 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:03 PM
Sunset: 7:13 PM
Daylight: 12 hrs 20 mins
Moonrise: 2:28 AM
Moon Transit: 10:01 AM
Moonset: 5:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

5:28 PM - 7:58 PM
9:31 AM - 12:01 AM

Minor Periods

4:54 PM - 6:24 PM
1:58 AM - 3:28 AM

Action Rating: 2 out of 5

Thursday, September 18, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 58.1°F
Average Humidity: 96%
Chance of Rain: 0%
Wind: 12.8 mph
UV Index: 0.7

Air Quality

AQI: 2 - Moderate
PM2.5: 22.82 μg/m3
PM10: 30.17 μg/m3
Carbon Monoxide: 287.79 μg/m3
Nitrogen Dioxide: 19.31 μg/m3
Sulphur Dioxide: 4.38 μg/m3
Ozone: 59.52 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:03 PM
Sunset: 7:12 PM
Daylight: 12 hrs 17 mins
Moonrise: 3:37 AM
Moon Transit: 10:51 AM
Moonset: 5:54 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

6:16 PM - 8:46 PM
10:21 AM - 12:51 AM

Minor Periods

5:24 PM - 6:54 PM
3:07 AM - 4:37 AM

Action Rating: 3 out of 5

Friday, September 19, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 60.4°F
Average Humidity: 86%
Chance of Rain: 0%
Wind: 11.6 mph
UV Index: 0.2

Air Quality

AQI: 2 - Moderate
PM2.5: 24.74 μg/m3
PM10: 33.53 μg/m3
Carbon Monoxide: 259.89 μg/m3
Nitrogen Dioxide: 19.51 μg/m3
Sulphur Dioxide: 6.13 μg/m3
Ozone: 57.84 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 1:03 PM
Sunset: 7:10 PM
Daylight: 12 hrs 15 mins
Moonrise: 4:44 AM
Moon Transit: 11:36 AM
Moonset: 6:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

7:01 PM - 9:31 PM
11:06 AM - 1:36 PM

Minor Periods

5:50 PM - 7:20 PM
4:14 AM - 5:44 AM

Action Rating: 4 out of 5

Saturday, September 20, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 62.7°F
Average Humidity: 79%
Chance of Rain: 0%
Wind: 12.1 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 26.65 μg/m3
PM10: 35.08 μg/m3
Carbon Monoxide: 301.27 μg/m3
Nitrogen Dioxide: 34.41 μg/m3
Sulphur Dioxide: 5.81 μg/m3
Ozone: 50.54 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:02 PM
Sunset: 7:09 PM
Daylight: 12 hrs 13 mins
Moonrise: 5:47 AM
Moon Transit: 12:19 AM
Moonset: 6:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

7:44 PM - 10:14 PM
11:49 AM - 2:19 PM

Minor Periods

6:13 PM - 7:43 PM
5:17 AM - 6:47 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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