what's the temperature in iceland in september
Icelandic weather. An advertisement said âthe whole island is air conditioned!â Iceland's cool, oceanic climate is quite mild for its latitude of 63-66Â° North, thanks to the warm Gulf Stream. The summers are short but bright and the best time to visit is late May to early September â that is, if youâre planning a summer holiday. The average daytime temperature around the coast during May to September is 10-12Â°C (50-55Â°F). A warm summer day would have temperatures around 20Â°C. Average daily sunshine in July and August is 5-6 hours and during the summer months the nights are bright.