Water Temperature of San Francisco Bay in San Francisco, CA

Current Water Temperature

54.9°F

Measurement Time: Thursday, February 19, 2026, 2:00 PM PST

Temperature Locations

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Local Points of Interest

The Embarcadero; Telegraph Hill

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

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

46.9°F
Partly cloudy
Partly cloudy
41.5°F
42.8°F
63%
NW 12.1 mph
18.4 mph
36.2°F
33.2°F
0 in
50%
9 mi
1014 mbar
0

Five Day Weather Forecast

Heavy rain
Thu
H: 55°F
L: 42°F
Sunny
Fri
H: 50°F
L: 39°F
Fog
Sat
H: 57°F
L: 44°F
Partly Cloudy
Sun
H: 59°F
L: 50°F
Patchy rain nearby
Mon
H: 61°F
L: 51°F

Air Quality

AQI: 1 - Good
PM2.5: 4.65 μg/m3
PM10: 6.35 μg/m3
Carbon Monoxide: 222.85 μg/m3
Nitrogen Dioxide: 11.85 μg/m3
Sulphur Dioxide: 3.75 μg/m3
Ozone: 71 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 12:23 AM
Sunset: 5:53 PM
Daylight: 10 hrs 59 mins
Moonrise: 7:59 AM
Moon Transit: 1:07 PM
Moonset: 8:37 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 PM
12:37 AM - 3:07 PM

Minor Periods

8:07 PM - 9:37 PM
7:29 AM - 8:59 AM

Action Rating: 2 out of 5

High Surf Advisory issued February 19 at 8:17AM PST until February 20 at 9:00AM PST by NWS San Francisco CA

Effective: Thu February 19, 2026, 8:17 AM
Expires: Thu February 19, 2026, 9:00 PM

* WHAT...Large breaking waves of 18 to 22 feet, with continuing increased risk of sneaker waves and strong rip currents. * WHERE...Pacific Coast beaches. * WHEN...Until 9 AM PST Friday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion can be expected. Sneaker waves can sweep across the shoreline without warning, pulling people into the sea from rocks, jetties and beaches. Large breaking waves can overpower swimmers resulting in significant physical injury and increase the risk of drowning.

Swimmers should remain out of the water due to dangerous surf conditions.


High Surf Advisory issued February 19 at 8:37PM PST until February 20 at 9:00AM PST by NWS San Francisco CA

Effective: Thu February 19, 2026, 8:37 PM
Expires: Fri February 20, 2026, 9:00 AM

* WHAT...Large breaking waves of 18 to 22 feet, with continuing increased risk of sneaker waves and strong rip currents. * WHERE...Pacific Coast beaches. * WHEN...Until 9 AM PST Friday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion can be expected. Sneaker waves can sweep across the shoreline without warning, pulling people into the sea from rocks, jetties and beaches. Large breaking waves can overpower swimmers resulting in significant physical injury and increase the risk of drowning.

Swimmers should remain out of the water due to dangerous surf conditions.


Extreme Cold Warning issued February 18 at 11:25PM PST until February 20 at 9:00AM PST by NWS San Francisco CA

Effective: Wed February 18, 2026, 11:25 PM
Expires: Thu February 19, 2026, 3:00 PM

* WHAT...Very cold conditions with sub-freezing temperatures in the mid-20s to low-30s expected. * WHERE...The East Bay Hills and Valleys, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, North Bay Interior Mountains, North Bay Interior Valleys, Eastern Santa Clara Hills, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock.

Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.


Cold Weather Advisory issued February 18 at 11:25PM PST until February 20 at 9:00AM PST by NWS San Francisco CA

Effective: Wed February 18, 2026, 11:25 PM
Expires: Thu February 19, 2026, 3:00 PM

* WHAT...Cold conditions with temperatures in the low-to-mid 30s expected. * WHERE...The Marin Hills, Western Sonoma County Hills, Northern Monterey Bay, The Santa Cruz Mountains, The Santa Clara Valley, Coastal North Bay Including Point Reyes National Seashore, San Francisco Bay Shoreline, and Northern Salinas Valley/Hollister Valley and Carmel Valley. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken.

Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.


Cold Weather Advisory issued February 19 at 2:08PM PST until February 20 at 9:00AM PST by NWS San Francisco CA

Effective: Thu February 19, 2026, 2:08 PM
Expires: Thu February 19, 2026, 10:00 PM

* WHAT...Cold conditions with temperatures in the low-to-mid 30s expected. * WHERE...The Marin Hills, Western Sonoma County Hills, Northern Monterey Bay, The Santa Cruz Mountains, The Santa Clara Valley, Coastal North Bay Including Point Reyes National Seashore, San Francisco Bay Shoreline, and Northern Salinas Valley/Hollister Valley and Carmel Valley. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken.

Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.


Thursday, February 19, 2026

Weather Forecast

Heavy rain
54.9°F
41.9°F
46.6°F
78%
0.82 in
89%
0%
26.6 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 6.51 μg/m3
PM10: 12.39 μg/m3
Carbon Monoxide: 171.29 μg/m3
Nitrogen Dioxide: 4.8 μg/m3
Sulphur Dioxide: 2.6 μg/m3
Ozone: 91.08 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 12:23 AM
Sunset: 5:53 PM
Daylight: 10 hrs 59 mins
Moonrise: 7:59 AM
Moon Transit: 1:07 PM
Moonset: 8:37 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 PM
12:37 AM - 3:07 PM

Minor Periods

8:07 PM - 9:37 PM
7:29 AM - 8:59 AM

Action Rating: 2 out of 5

Friday, February 20, 2026

Weather Forecast

Sunny
50°F
38.7°F
44.4°F
75%
0 in
0%
0%
9.6 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 6.01 μg/m3
PM10: 10.88 μg/m3
Carbon Monoxide: 185.93 μg/m3
Nitrogen Dioxide: 7.39 μg/m3
Sulphur Dioxide: 4.46 μg/m3
Ozone: 80 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 12:23 AM
Sunset: 5:54 PM
Daylight: 11 hrs 1 mins
Moonrise: 8:24 AM
Moon Transit: 12:00 AM
Moonset: 9:46 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

9:16 PM - 10:46 PM
7:54 AM - 9:24 AM

Action Rating: 2 out of 5

Saturday, February 21, 2026

Weather Forecast

Fog
57°F
43.9°F
48.7°F
87%
0 in
0%
0%
18.3 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 11.63 μg/m3
PM10: 14.83 μg/m3
Carbon Monoxide: 294.97 μg/m3
Nitrogen Dioxide: 23.59 μg/m3
Sulphur Dioxide: 4.83 μg/m3
Ozone: 61.44 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:23 AM
Sunset: 5:55 PM
Daylight: 11 hrs 3 mins
Moonrise: 8:51 AM
Moon Transit: 3:48 PM
Moonset: 10:58 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:18 PM - 5:48 PM

Minor Periods

10:28 PM - 11:58 PM
8:21 AM - 9:51 AM

Action Rating: 3 out of 5

Sunday, February 22, 2026

Weather Forecast

Partly Cloudy
58.5°F
49.5°F
53.4°F
83%
0 in
0%
0%
17.4 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 8.59 μg/m3
PM10: 15.14 μg/m3
Carbon Monoxide: 161.85 μg/m3
Nitrogen Dioxide: 8.68 μg/m3
Sulphur Dioxide: 2.28 μg/m3
Ozone: 86.24 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 12:23 AM
Sunset: 5:56 PM
Daylight: 11 hrs 6 mins
Moonrise: 9:22 AM
Moon Transit: 4:41 PM
Moonset: 12:11 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:11 PM - 6:41 PM

Minor Periods

12:00 AM - 12:00 AM
8:52 AM - 10:22 AM

Action Rating: 2 out of 5

Monday, February 23, 2026

Weather Forecast

Patchy rain nearby
60.7°F
51.2°F
56.1°F
73%
0.02 in
89%
0%
7.8 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 11.42 μg/m3
PM10: 14.67 μg/m3
Carbon Monoxide: 217.7 μg/m3
Nitrogen Dioxide: 23.66 μg/m3
Sulphur Dioxide: 2.77 μg/m3
Ozone: 63.31 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:22 AM
Sunset: 5:57 PM
Daylight: 11 hrs 8 mins
Moonrise: 10:00 AM
Moon Transit: 5:37 PM
Moonset: 12:11 AM
Moon Phase: First Quarter
Moon Illumination: 39.8%

Best Times for Fishing or Hunting

Major Periods

12:09 AM - 2:39 AM
5:07 PM - 7:37 PM

Minor Periods

9:30 AM - 11:00 AM
12:00 AM - 12:00 AM

Action Rating: 2 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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