There's a low pressure in the Atlantic Ocean and a fair chance that it's going to reach the Canary Islands and bring rain. However, it's still impossible to be sure that it'll make it this far south.

Assumming it dos, it will start to affect Gran Canaria on Friday. 

Until then, expect sunny weather in south Gran Canaria and sunny afternoons in the north. 

The sea is around 24ºC at the moment and there are decent swells all along the north coast. 

We'll update as soon as things get clearer.