Stand up paddle surfing in Iceland

Still cold and freezing in Europe.
How cold is cold?  Till which temparture you can do SUP (stand up paddle surfing)? We do not know the answer. On Fuerteventura is always summer no snow and no ice. We wondering how the SUP surfers of Iceland are feeling during the SUP sessions. For us they are really hardcore SUP boarders. The movie of Iceland SUP surfing is very impressive, but we are happy to SUP surf in our warm island Fuerteventura.

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