sentences:  The midnight sun can be experienced in summer on the island of Grímsey off the north coast; the remainder of the country, since it lies just south of the polar circle, experiences a twilight period during which the sun sets briefly, but still has around two weeks of continuous daylight during the summer.The Icelandic winter is relatively mild for its latitude, owing to maritime influence and proximity to the warm currents of the North Atlantic Gyre.The southerly lowlands of the island average around in winter, while the north averages around .