Updated
Porth Nanven
Beach
Cold water — serious cold-shock risk today
Cold waterCold water — serious cold-shock risk today: water temperature is 59°F, cold enough to cause cold-water shock on sudden immersion.
- Water temp 59°F (15°C)
Live data from offshore buoy 62107 (17.7 mi away), as of Oct 20, 8:00 AM UTC.
Why, sources & official advisories
- Water temperature is 59°F, cold enough to cause cold-water shock on sudden immersion. — offshore buoy 62107, as of Oct 20, 8:00 AM UTC
No official beach-advisory feed for Cornwall yet — follow posted signs and local guidance.
Get an email when it’s warm enough
It’s 59°F at Porth Nanven now. We check the water daily and email you once when it reaches your temperature.
Porth Nanven (grid reference SW355307; most well known as Cot Valley and occasionally known as Penanwell) is a beach in the far west of Cornwall, England, United Kingdom. It is located half-a-mile west of the town of St Just. The beach is at the seaward end of the Cot Valley and is part of the Aire Point To Carrick Du Site of Special Scientific Interest.
Interactive map not available
Advertisement
Weather at Porth Nanven
55°F, Sunny · H 57° / L 55° · 68% chance of rain3-day forecast
Frequently asked questions
- Where is Porth Nanven?
- Porth Nanven is a beach in Cornwall.
- What is the water temperature at Porth Nanven?
- As of October 20, 2026, the water temperature at Porth Nanven in Cornwall is 59°F (15°C), measured by offshore buoy 62107, 17.7 miles away.
- Can you swim at Porth Nanven?
- Cold water — serious cold-shock risk today: water temperature is 59°F, cold enough to cause cold-water shock on sudden immersion. Checked October 20, 2026.
Advertisement
Gear for today
SponsoredWater is 59°F.
Compare current options on Amazon. As an Amazon Associate we earn from qualifying purchases.
Location & Contact
Cornwall
🏖️ 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
</> Embed this location on your site
Paste this snippet into your website to show a live badge for Porth Nanven — free to use with the included credit link.