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Photo: Porth Hellick Bay - geograph.org.uk - 934745 by Bob Embleton (CC BY-SA 2.0) License
Porth Hellick
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 (15.2 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
- Heavy rain today can raise bacteria levels near outfalls and river mouths.
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 Hellick now. We check the water daily and email you once when it reaches your temperature.
Cool today
Editor's Notes
Porth Hellick (Cornish: Porth Helyk, meaning willows cove) is a tidal inlet on the south coast of St Mary’s, the largest island in the Isles of Scilly.
The bay is delineated to the south by a headland known as the Giant’s Castle, which is an Iron Age cliff fort, and Porth Hellick Down and Porth Hellick Point to the north. At low tide a wide expanse of sand and rocks are exposed and a bar of fine shingle provides a barrier from the sea to form the largest area of (usually) fresh water on St Mary’s.
Interactive map not available
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Weather at Porth Hellick
56°F, Sunny · H 57° / L 55° · 76% chance of rain3-day forecast
H: 57° L: 55°
Sunny
56°
|
Feels like 47°
Precipitation
76%
Humidity
66%
Wind
16 mph
UV Index
1
Weather notes:
🏄Good for surfing/sailing
12 AM
56°
3 AM
56°
6 AM
55°
9 AM
55°
12 PM
56°
3 PM
57°
6 PM
55°
9 PM
55°
Frequently asked questions
- Where is Porth Hellick?
- Porth Hellick is a beach in Cornwall.
- What is the water temperature at Porth Hellick?
- As of October 20, 2026, the water temperature at Porth Hellick in Cornwall is 59°F (15°C), measured by offshore buoy 62107, 15.2 miles away.
- Can you swim at Porth Hellick?
- 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.
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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
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