Updated
Sumner Canyon
Beach · La Jolla, California
Cool water — ease in carefully
Use cautionCool water — ease in carefully: water temperature is 66°F, cool enough to cause cold-water shock on a sudden entry.
- Water temperature is 66°F, cool enough to cause cold-water shock on a sudden entry.
- No official beach advisory posted (California Water Boards — FHAB Reports checked).
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Cool water — ease in carefully
Use cautionCool water — ease in carefully: water temperature is 66°F, cool enough to cause cold-water shock on a sudden entry.
- Water temperature is 66°F, cool enough to cause cold-water shock on a sudden entry. — NOAA buoy LJAC1, as of Aug 22, 3:00 PM UTC
- No official beach advisory posted (California Water Boards — FHAB Reports checked).
Official advisories
Checked against California Water Boards — FHAB Reports — no advisory posted.
Live data from NOAA buoy LJAC1 (0.5 mi away), as of Aug 22, 3:00 PM UTC.
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Frequently asked questions
- Where is Sumner Canyon?
- Sumner Canyon is a beach in La Jolla, California.
- What is the water temperature at Sumner Canyon?
- As of August 22, 2026, the water temperature at Sumner Canyon in La Jolla, California is 66°F (19°C), measured by NOAA buoy LJAC1, 0.5 miles away.
- Can you swim at Sumner Canyon?
- Cool water — ease in carefully: water temperature is 66°F, cool enough to cause cold-water shock on a sudden entry. Checked August 22, 2026.
- How is Sumner Canyon rated?
- Sumner Canyon in La Jolla, California has an average visitor rating of 4.8 out of 5, based on 31 reviews.
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Best Times to Visit
- ›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
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