People are being warned against swimming in a former quarry full of chemicals.
It's known as the 'Blue Lagoon' and it's tranquil turquoise waters draw people from far and wide.
But experts say it's PH levels make it almost as toxic as bleach.
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Windy throughout the whole of the weekend, especially at the coast. High tides, so beware big waves, coastal gusts 50-60mph
Apart from the strong wind, we have a pretty stagnant weather situation at present. Coastal gusts of 50-60mph, inland gusts of 40-50mph
Windy throughout the weekend with gusts of 50mph especially around the coast. Saturday will be drier and brighter than Sunday