Updated
Thornton State Beach
Beach · Daly City, California
Use caution — an official advisory is in effect
Use cautionUse caution — an official advisory is in effect: water temperature is 61°F, cool enough to cause cold-water shock on a sudden entry.
- Water temp 61°F (16°C)
Live data from NOAA buoy 46237 (9.8 mi away), as of Oct 29, 7:30 AM UTC.
- A Coastal Flood Advisory is in effect for Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast. — NWS San Francisco CA
Why, sources & official advisories
- Water temperature is 61°F, cool enough to cause cold-water shock on a sudden entry. — NOAA buoy 46237, as of Oct 29, 7:30 AM UTC
- No official beach advisory posted (California Water Boards — FHAB Reports checked).
Official advisories
Checked against California Water Boards — FHAB Reports — no advisory posted.
Get an email when it’s warm enough
It’s 61°F at Thornton State Beach now. We check the water daily and email you once when it reaches your temperature.
Established in 1955, this rugged, 58-acre oceanside park features hiking & scenic views.
What’s swimming here?
Fish recorded within 2 km: Striped Bass and Northern Anchovy.
2 fish species in 2 public records within 2 km of Thornton State Beach since 2000.
- 1 record · 2025
- Northern Anchovy Engraulis mordax1 record · 2023
Non-native: the USGS Nonindigenous Aquatic Species database lists the species as introduced to the San Francisco Coastal South watershed.
Caught one? Make it a card.Snap your catch in Reelio and collect every species. Free on iPhone.Data: GBIF.org occurrence records, CC0 and CC BY only (iNaturalist research-grade observations). Common names: USGS NAS. Non-native flags: USGS NAS. These are sightings and specimens people reported, not a survey: a fish missing from the list may still live here.
Things to Do Near Thornton State Beach
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Frequently asked questions
- Where is Thornton State Beach?
- Thornton State Beach is a beach in Daly City, California.
- What is the water temperature at Thornton State Beach?
- As of October 29, 2026, the water temperature at Thornton State Beach in Daly City, California is 61°F (16°C), measured by NOAA buoy 46237, 9.8 miles away.
- Can you swim at Thornton State Beach?
- Use caution — an official advisory is in effect: water temperature is 61°F, cool enough to cause cold-water shock on a sudden entry. Checked October 29, 2026.
- How is Thornton State Beach rated?
- Thornton State Beach in Daly City, California has an average visitor rating of 4.7 out of 5, based on 741 reviews.
- What amenities does Thornton State Beach have?
- Visitor-listed amenities at Thornton State Beach include pet-friendly.
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Location & Contact
Thornton Beach Rd, Daly City, CA 94015
Daly City, California 94015
Phone
+1 831-335-6318Popular Times
🏖️ Best times & visiting tips
- ›Arrive early for best parking and beach spot selection
- ›Check for lifeguard schedules and swim only in designated areas
- ›Bring reef-safe sunscreen to protect marine life
- ›Watch for beach flags indicating water conditions
Features & amenities
People Talk About
Amenities
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