Despite its northern latitude, temperatures very rarely drop below  in the winter. The proximity to the Arctic Circle and the strong moderation of the Atlantic Ocean in the Icelandic coast (influence of North Atlantic Current, an extension of the Gulf Stream) shape a relatively mild winter and cool summer. The city's coastal location does make it prone to wind, however, and gales are common in winter (influence of the Icelandic Low).  Summers are cool, with temperatures fluctuating between , rarely exceeding . This is a result of the location on an island in the North Atlantic away from warm summer continental air, making it cooler in summer than similar latitudes in mainland Scandinavia. Reykjavík averages 147 days of rain (more than 1 mm) per year. Droughts are uncommon, although they occur in some summers. July and August are the warmest months of the year on average and January and February the coldest.