Knightstone Road · Weston-super-Mare
Weston Marine Lake
All-day, year-round sea water access for all
A sea lake for everyone
We love sea swimming, but sometimes the tides aren’t right or the weather is too wild. Marine Lake holds sea water at every state of the tide, so you can swim every day of the year – no waiting for high tide.
It’s the perfect place to train, paddle or bring the family, with nearly a century of seaside history behind it. The lake is free to use and looked after by the Mudlarks – a group of volunteers who clean, campaign and fundraise to keep it special.
200m+
of sheltered sea water
1929
the year the causeway was finished
24/7
open every day, all year
Free
no tickets, no entry fee
Lake updates
- The lake is Open
- Water quality Excellent
- See for yourself Live webcam
Dive in
News from the lake
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Welcome to our new website
Lake status, the live webcam, visitor info and an online shop – all in one place.
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Marine Lake is open again!
After a £1 million refurbishment, the lake reopened on 22 May 2026 with new steps, ramps, toilets and a deep-water swimming channel.
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Our live webcam is up and running
Check on the lake from anywhere – our webcam is now streaming live, thanks to the Rotary clubs of Weston-super-Mare and Delft.
Help keep the lake free for everyone
The Mudlarks are all volunteers. Every donation, every hour of litter-picking and every local sponsor goes straight into looking after Marine Lake – from water testing to the webcam.