Finnmark - Climate

Climate

Finnmarksvidda in the interior of the county has a continental climate with the coldest winter temperatures in Norway: the coldest temperature ever recorded was −51.4 °C (−60.5 °F) in Karasjok on 1 January 1886. The 24-hour averages for January and July at the same location are −17.1 °C (1.2 °F) and 13.1 °C (55.6 °F), the annual average is −2.4 °C (27.7 °F), and precipitation is only 366 mm (14.4 in) per year with summer as the wettest season. Karasjok has recorded up to 32.4 °C (90.3 °F) in July, giving a possible year amplitude of 84°C (151.2°F) (rare in Europe). Finnmarksvidda has annual mean temperatures down to −3 °C (26.6 °F) (Sihcajavri in Kautokeino), the coldest in mainland Norway (except for higher mountains areas) and even colder than Jan Mayen and Bear Island. However, Sihcajavri has also recorded the warmest temperature ever in North Norway: 34.3 °C (93.7 °F) on 23 June 1920.

Due to the proximity to the ice-free ocean, winters are much milder in coastal areas (and more windy); Loppa has average January and July temperatures of −2 °C (28 °F) and 11.6 °C (52.9 °F) respectively, with an annual mean of 3.6 °C (38.5 °F), despite being further north. Average annual precipitation is 914 mm (36.0 in) and the wettest season is September until December. The year average temperature difference between Loppa and Karasjok (6°C) is comparable to the difference between Loppa and London.

In the Köppen climate classification, the climate in Karasjok–and most of the lowland areas in Finnmark–corresponds to the Dfc category (subarctic climate), while the Loppa climate corresponds to the Cfc category. The northeastern coast, from Nordkapp east to Vardø, have arctic tundra climate (Köppen: ETf), as the average July temperature is below 10 °C (50 °F).

Furthermore, elevations exceeding approximately 100 to 200 m (330 to 660 ft) in coastal areas in western Finnmark and 300 to 500 m (980 to 1,600 ft) in the interior result in an alpine climate, and in the northeast this merges with the Arctic tundra climate.

The climate in sheltered parts of fjord areas (particularly Altafjord) is usually considered the most hospitable: winters are not as cold as in the interior, and summer warmth is comparable. Even if winter temperatures are milder in coastal areas, the coast is more exposed to winter storms, which often complicate or shut down road and air communications.

Alta airport/Alta (1961-90)
Climate chart (explanation)
J F M A M J J A S O N D
32 −5 −13 25 −5 −12 23 −1 −9 17 3 −4 20 8 2 33 14 7 54 17 10 49 15 9 38 10 4 39 4 −1 34 −1 −7 36 −3 −11
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: met.no/klimastatistikk/eklima
Imperial conversion
J F M A M J J A S O N D
1.3 22 9 1 24 11 0.9 29 17 0.7 37 25 0.8 46 35 1.3 57 45 2.1 63 50 1.9 59 48 1.5 50 40 1.5 39 30 1.3 31 20 1.4 26 13
Average max. and min. temperatures in °F
Precipitation totals in inches

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