Spotting an adder in Cornwall is a rare treat for wildlife enthusiasts. As Britain’s only venomous snake, the adder (Vipera berus) has an air of mystery about it; often misunderstood, yet beautifully adapted to the wild landscapes of Cornwall’s coast and countryside. Although sightings are uncommon, there are a few places where patient observers may be lucky enough to see one basking in the sun.
Adders on the Dunes at Hayle
It is possible to see adders around the sand dunes in Hayle, particularly at Mexico Towans – “Towans” being the Cornish word for dunes. During the warmer summer months, adders sometimes emerge to bask on the sandy paths or among the tufts of marram grass.
That said, sightings here are very rare. I’ve been out in Hayle on several occasions, hoping to catch a glimpse of one, but haven’t been lucky so far. The dunes are vast, and adders are naturally shy, retreating quickly at the sound or vibration of footsteps. Still, the area’s mix of heathland, sand, and shelter makes it one of the most suitable habitats for them in West Cornwall.
A Chance Encounter at Watergate Bay
The only time I’ve seen an adder in Cornwall was entirely by chance and quite unexpected. I was at Watergate Bay, sitting quietly with binoculars, hoping to spot humpback whales offshore. After a couple of hours, I got up to leave and realised that a juvenile adder had been sunning itself just a few feet away from me. It was a reminder that these elusive reptiles are out there, we just rarely notice them.

Where Else to Look
Adders favour open heathland, sand dunes, and coastal paths with good cover. In addition to Hayle and Watergate Bay, they’ve occasionally been spotted in parts of The Lizard Peninsula, Gwithian Towans, and Bodmin Moor though sightings anywhere in Cornwall remain uncommon. Early spring and summer mornings, when the sun first begins to warm the ground, are the best times to look.
A Word of Caution
If you’re out walking in areas known for adders, tread carefully and observe from a respectful distance. Adders are timid and only bite if provoked or accidentally stepped on. Wearing sturdy footwear and keeping dogs close by is always sensible when exploring Cornwall’s wilder spots.
In short: seeing an adder in Cornwall is rare but memorable; a fleeting moment that connects you to the wild heart of the Cornish landscape. Whether you’re wandering the dunes of Hayle or the cliffs of Watergate Bay, keep your eyes open and your camera ready, you never know what you might find basking in the sunshine.
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