Water Temperature of San Francisco Bay in Alameda, CA

Current Water Temperature

69.6°F

Measurement Time: Sunday, September 21, 2025, 4:06 PM PDT

Today's Tides

High: September 21, 12:01 AM, 6.30 ft
 Low: September 21, 6:16 AM, 0.49 ft
High: September 21, 12:44 PM, 6.24 ft
 Low: September 21, 6:40 PM, 1.09 ft

Temperature Locations

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Local Points of Interest

USS Hornet; Naval Air Station Alameda; Encinal Beach; Oakland, CA

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San Francisco Bay

Station Name: Alameda
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 0 feet / 0 meters

Sensor Depth: -3.9 feet / -1.2 meters

Nearest Address:
26 W Hornet Ave
Alameda, CA 94501
Alameda County

GPS Coordinates: 37.771700, -122.300000

Nearby Water Temperatures

San Francisco Bay, San Francisco, CA (5.7 mi)
San Francisco Bay, San Francisco, CA (7.7 mi)
San Francisco Bay, San Francisco, CA (9.4 mi)
San Francisco Bay, San Mateo, CA (10.2 mi)
San Francisco Bay, Richmond, CA (12.1 mi)
Rodeo Pond, Sausalito, CA (13.0 mi)
Rodeo Lagoon, Sausalito, CA (13.1 mi)
Rodeo Lagoon, Sausalito, CA (13.4 mi)
San Francisco Bay, San Rafael, CA (13.8 mi)
Redwood Creek, Redwood City, CA (19.0 mi)
Carquinez Strait, Martinez, CA (20.5 mi)
San Francisco Bay, Menlo Park, CA (20.9 mi)
Suisun Bay, Concord, CA (24.2 mi)
Coyote Creek, Alviso, CA (26.1 mi)
Pacific Ocean, San Francisco, CA (29.5 mi)

Weather for Alameda, California

Current Weather

84.9°F
Sunny
Conditions: Sunny
Humidity: 39%
Feels Like: 88.1°F
Wind: W 6.9 mph
Wind Gusts: 8.6 mph
Pressure: 29.87 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 3.1

Five Day Weather Forecast

Partly Cloudy
Sun
H: 82°F
L: 58°F
Partly Cloudy
Mon
H: 68°F
L: 55°F
Partly Cloudy
Tue
H: 80°F
L: 56°F
Overcast
Wed
H: 74°F
L: 61°F
Partly Cloudy
Thu
H: 74°F
L: 61°F

Air Quality

AQI: 2 - Moderate
PM2.5: 20.35 μg/m3
PM10: 22.57 μg/m3
Carbon Monoxide: 283.05 μg/m3
Nitrogen Dioxide: 49.77 μg/m3
Sulphur Dioxide: 3.52 μg/m3
Ozone: 24 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:02 PM
Sunset: 7:07 PM
Daylight: 12 hrs 10 mins
Moonrise: 6:48 AM
Moon Transit: 1:00 PM
Moonset: 7:03 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

8:25 PM - 10:55 PM
12:30 AM - 3:00 PM

Minor Periods

6:33 PM - 8:03 PM
6:18 AM - 7:48 AM

Action Rating: 3 out of 5

Sunday, September 21, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 66.1°F
Average Humidity: 84%
Chance of Rain: 0%
Wind: 7.4 mph
UV Index: 1.5

Air Quality

AQI: 2 - Moderate
PM2.5: 19.11 μg/m3
PM10: 23.07 μg/m3
Carbon Monoxide: 308.95 μg/m3
Nitrogen Dioxide: 15.34 μg/m3
Sulphur Dioxide: 3.3 μg/m3
Ozone: 60.4 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:02 PM
Sunset: 7:07 PM
Daylight: 12 hrs 10 mins
Moonrise: 6:48 AM
Moon Transit: 1:00 PM
Moonset: 7:03 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

8:25 PM - 10:55 PM
12:30 AM - 3:00 PM

Minor Periods

6:33 PM - 8:03 PM
6:18 AM - 7:48 AM

Action Rating: 3 out of 5

Monday, September 22, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 60.7°F
Average Humidity: 87%
Chance of Rain: 0%
Wind: 8.7 mph
UV Index: 1.6

Air Quality

AQI: 2 - Moderate
PM2.5: 21.5 μg/m3
PM10: 25.31 μg/m3
Carbon Monoxide: 304.36 μg/m3
Nitrogen Dioxide: 30.75 μg/m3
Sulphur Dioxide: 5.45 μg/m3
Ozone: 47.96 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:01 PM
Sunset: 7:05 PM
Daylight: 12 hrs 8 mins
Moonrise: 7:48 AM
Moon Transit: 1:41 PM
Moonset: 7:25 PM
Moon Phase: New
Moon Illumination: 2.9%

Best Times for Fishing or Hunting

Major Periods

9:05 PM - 11:35 PM
1:11 PM - 3:41 PM

Minor Periods

6:55 PM - 8:25 PM
7:18 AM - 8:48 AM

Action Rating: 5 out of 5

Tuesday, September 23, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 64.3°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 8.3 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 28.57 μg/m3
PM10: 34.03 μg/m3
Carbon Monoxide: 374.44 μg/m3
Nitrogen Dioxide: 40.23 μg/m3
Sulphur Dioxide: 6.36 μg/m3
Ozone: 49.64 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 1:01 PM
Sunset: 7:04 PM
Daylight: 12 hrs 6 mins
Moonrise: 8:48 AM
Moon Transit: 2:22 PM
Moonset: 7:48 PM
Moon Phase: New
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:52 PM - 4:22 PM

Minor Periods

7:18 PM - 8:48 PM
8:18 AM - 9:48 AM

Action Rating: 4 out of 5

Wednesday, September 24, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 67.2°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 9.6 mph
UV Index: 4

Air Quality

AQI: 2 - Moderate
PM2.5: 20.79 μg/m3
PM10: 26.01 μg/m3
Carbon Monoxide: 324.42 μg/m3
Nitrogen Dioxide: 21.72 μg/m3
Sulphur Dioxide: 4.74 μg/m3
Ozone: 68.68 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 1:01 PM
Sunset: 7:02 PM
Daylight: 12 hrs 3 mins
Moonrise: 9:48 AM
Moon Transit: 3:04 PM
Moonset: 8:13 PM
Moon Phase: New
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:34 PM - 5:04 PM

Minor Periods

7:43 PM - 9:13 PM
9:18 AM - 10:48 AM

Action Rating: 3 out of 5

Thursday, September 25, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 65.2°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 11.9 mph
UV Index: 5

Air Quality

AQI: 2 - Moderate
PM2.5: 21.74 μg/m3
PM10: 25.06 μg/m3
Carbon Monoxide: 334.42 μg/m3
Nitrogen Dioxide: 31.34 μg/m3
Sulphur Dioxide: 4.21 μg/m3
Ozone: 51.15 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 1:00 PM
Sunset: 7:01 PM
Daylight: 12 hrs 1 mins
Moonrise: 10:50 AM
Moon Transit: 3:48 PM
Moonset: 8:42 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

8:12 PM - 9:42 PM
10:20 AM - 11:50 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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