OZZO / Visit Reykjanes
In Iceland the Climate is dominate by two phenomenons.
The Gulf Stream creates normally refreshing summers and fairly mild winters. Anyway the weather can also be affected by the East Greenland polar curving south-eastwards round the north and east coasts.
It means sometimes the weather can change very sudden, and you have as tourist should be prepare by that. For weather info in English call: +354-902-0600 or visit the Met Office website.