🇳🇴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 winters averaging 1 to 2°C; the eastern interior experiences continental influences with colder, drier conditions and Oslo recording −3°C in January and 18°C in July with 760 mm; and the Arctic archipelago of Svalbard (78°N) has polar tundra (ET) with Longyearbyen averaging −14°C in January and 6°C in July. 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 registers −4°C in January and 12°C in July with 1,030 mm; Trondheim has −2°C January and 15°C July with 900 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, roughly three times the global average, 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 including Bagn and Bråtå with record rainfall, the June 2020 national heat record of 35.6°C at Saltdal, increasing fjord avalanches from intense precipitation and snowmelt, and rapid retreat of glaciers like Briksdalsbreen and Nigardsbreen.

Our archive covers 6 Norwegian cities with daily ERA5 reanalysis data going back to 1940. The warmest July averages occur in Drammen, around 21.7°C, while Drammen records the coldest January nights near −8.1°C. Comparing the last decade against the 1940–1970 baseline, mean temperatures across these cities have risen by about 2.4°C.6°C national record at Saltdal, and accelerating Jotunheimen and Svalbard glacier loss.