🇳🇴Norway

Norway stretches from 58°N at its southern tip to 81°N on Svalbard, spanning approximately 385,207 km² along the North Atlantic and Arctic Ocean. Three distinct climate zones emerge: the western coast benefits from the Gulf Stream and North Atlantic Current, creating a mild oceanic climate (Cfb/Cfc) with Bergen receiving roughly 2,500 mm annually and winter highs around 5°C with nights just above 0°C; the eastern interior experiences continental influences with colder, drier conditions and Oslo seeing January highs around 0°C and lows near −5°C, and July highs near 23°C, with about 800 mm; and the Arctic archipelago of Svalbard (78°N) has polar tundra (ET) with Longyearbyen seeing January highs around −8°C and lows around −14°C and July highs near 9°C (1991–2020). The mountainous spine, including Jotunheimen (Galdhøpiggen at 2,469 m) and the Scandinavian Mountains, shapes dramatic west-to-east precipitation gradients and harbors extensive glaciers and ice fields.

Tromsø in the north has January highs of −1°C with lows near −5°C and July highs of 16°C with 1,090 mm; Trondheim has January highs of 1°C with lows near −4°C and July highs of about 20°C with 870 mm; Bergen's high precipitation makes it one of Europe's wettest cities. Norway sits at the leading edge of Arctic amplification: Svalbard has warmed approximately 4°C since 1970, with accelerating glacier loss in Jotunheimen and Svalbard, lengthening ice-free seasons, and thawing permafrost.

Major recent events include the 2018 Scandinavian heatwave and wildfires reaching the Arctic Circle, the August 2023 Storm Hans flooding that struck eastern valleys, and rapid retreat of glaciers like Briksdalsbreen; the national heat record remains 35.6°C at Nesbyen (June 1970).

Our archive covers 6 Norwegian cities with daily ERA5 reanalysis data going back to 1940. Comparing the last decade against the 1940–1970 baseline, mean temperatures across these cities have risen by about 2.4°C.