Is Black Sands Beach good for swimming today?
Black Sands Beach has BeachFinder Score: 65/100. Use this as a planning signal only, then check local flags, lifeguards, closures and current beach conditions.
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US-W - US
Black Sands Beach
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Shared BeachFinder spot: compare live conditions, water temperature, wind, UV, waves, currents, amenities and nearby alternatives before you leave.
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Quick answer
Quick answer: Black Sands Beach today
Black Sands Beach is a BeachFinder spot in US-W, US. Today, compare water temperature 16°C, wind 10 km/h · SW, uv 7.3, waves 1.3 m, water quality Check official advisories before leaving. BeachFinder Score: 65/100. Always check official flags, closures and lifeguard advice before swimming.
Water temperature
16°C
Wind
10 km/h · SW
UV
7.3
Waves
1.3 m
Water quality
Check official advisories
Last updated: Aug 27, 09:30 AM local forecast timeBeachFinder Score: 65/100
Sources: Open-Meteo weather and marine forecasts, OpenStreetMap place context and BeachFinder spot data.
This is planning information, not a safety clearance. Conditions can change quickly.
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Live conditions on the site
Surfers can check wind, wave height, currents and surf cues here before opening the full BeachFinder app.
Updated: Aug 27, 09:30 AM
Water temp
16°C
Air temp
19°C
Feels like
19°C
UV index
7.3
Wind
10 km/h · SW
Gust 11 km/h
Waves
1.3 m
Current
1 km/h · E
Parking
...
Shower
...
Accessible access
...
Toilets
...
Restaurants
...
Weather and marine data: Open-Meteo
Black Sands Beach
Black Sands Beach stretches along the coast of Northern California, about 25 kilometers south of San Francisco. The coordinates (37.82°N / 122.51°O) place this shore within the San Francisco Bay, where the coastline alternates between steep cliffs and sandy coves. The area is characterized by cold and often rough waters, typical of the northern California Pacific coast, with a background of sparse coastal vegetation and volcanic geological formations.
About this spot
The name 'Black Sands' directly evokes the mineral composition of this beach: the black sand comes from the erosion of volcanic rocks, a geological heritage common to the coasts of Northern California. This region, shaped by the tectonic activity of the San Andreas Fault and ancient lava fields, bears visible traces of its volcanic past. Historically, these black beaches have attracted amateur geologists and mineral collectors, fascinated by the magnetite and other iron-rich minerals that sparkle under the sun.
Updated 5/9/2026
Frequently asked questions
What is the water temperature at Black Sands Beach today?
16°C. Marine temperature is shown when forecast coverage is available for this location.
How windy is Black Sands Beach today?
10 km/h · SW. Wind can change comfort and surface conditions, especially on exposed beaches.
What should I check before swimming at Black Sands Beach?
Check official safety flags, lifeguard advice, closures, water-quality advisories, UV, wind, waves and currents before entering the water.
Before you go
Conditions
Compare water temperature, air temperature, feels-like temperature, UV index, wind, waves and currents. Surf-focused data appears when a marine model covers the spot.
Amenities
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Black Sands Beach
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