<P> The aurora borealis is often visible at night time during the winter . The midnight sun can be experienced in summer on the island of Grimsey 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 2 weeks of continuous daylight during the summer . </P> <P> The Icelandic winter is relatively mild for its latitude . The southerly lowlands of the island average around 0 ° C (32 ° F) in winter, while the Highlands of Iceland tend to average around − 10 ° C (14 ° F). The lowest temperatures in the northern part of the island range from around − 25 to − 30 ° C (− 13 to − 22 ° F). The lowest temperature on record is − 39.7 ° C (− 39.5 ° F). </P> <P> The average July temperature in the southern part of the island is 10--13 ° C (50--55 ° F). Warm summer days can reach 20--25 ° C (68--77 ° F). The highest temperature recorded was 30.5 ° C (86.9 ° F) at the Eastern fjords in 1939 . Annual average sunshine hours in Reykjavík are around 1300, which is similar to towns in Scotland and Ireland . </P> <Table> <Tr> <Th_colspan="14"> (hide) Climate data for Reykjavík, Iceland (1961--1990) </Th> </Tr> <Tr> <Th> Month </Th> <Th> Jan </Th> <Th> Feb </Th> <Th> Mar </Th> <Th> Apr </Th> <Th> May </Th> <Th> Jun </Th> <Th> Jul </Th> <Th> Aug </Th> <Th> Sep </Th> <Th> Oct </Th> <Th> Nov </Th> <Th> Dec </Th> <Th> Year </Th> </Tr> <Tr> <Th> Average high ° C (° F) </Th> <Td> 1.9 (35.4) </Td> <Td> 2.8 (37) </Td> <Td> 3.2 (37.8) </Td> <Td> 5.7 (42.3) </Td> <Td> 9.4 (48.9) </Td> <Td> 11.7 (53.1) </Td> <Td> 13.3 (55.9) </Td> <Td> 13.0 (55.4) </Td> <Td> 10.1 (50.2) </Td> <Td> 6.8 (44.2) </Td> <Td> 3.4 (38.1) </Td> <Td> 2.2 (36) </Td> <Td> 7.0 (44.6) </Td> </Tr> <Tr> <Th> Average low ° C (° F) </Th> <Td> − 3.0 (26.6) </Td> <Td> − 2.1 (28.2) </Td> <Td> − 2.0 (28.4) </Td> <Td> 0.4 (32.7) </Td> <Td> 3.6 (38.5) </Td> <Td> 6.7 (44.1) </Td> <Td> 8.3 (46.9) </Td> <Td> 7.9 (46.2) </Td> <Td> 5.0 (41) </Td> <Td> 2.2 (36) </Td> <Td> − 1.3 (29.7) </Td> <Td> − 2.8 (27) </Td> <Td> 1.9 (35.4) </Td> </Tr> <Tr> <Td_colspan="14"> Source #1: Icelandic Meteorological Office </Td> </Tr> <Tr> <Td_colspan="14"> Source #2: All Icelandic weather station climatic monthly means </Td> </Tr> </Table>

What is the temperature in iceland in the summer
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