Climate of Europe

The Gulf Stream: Europe's heating system

The most decisive factor shaping European climate is the Atlantic Meridional Overturning Circulation (AMOC), of which the Gulf Stream is the best-known component. This ocean circulation system transports warm, saline water from the Gulf of Mexico and the Caribbean to the shores of Western Europe. The heat released makes Bergen in Norway (62° N) rarely freeze in its harbour, while Labrador in Canada — at the same latitude — is locked in ice for months.

The difference is quantifiable: the average January temperature in London (51° N) is about +5 °C; in Quebec City, Canada (46° N, further south!), it is −12 °C. The Gulf Stream is therefore responsible for a climate bonus of roughly 10–15 °C. Scientists warn that climate change could weaken the AMOC, with major consequences for European winters. A related topic is daylight saving time, which you can explore on the daylight saving time page.

Temperate oceanic climate (Western Europe)

Along the Atlantic coast — from Portugal and Spain through the British Isles, the Benelux, northern France and Scandinavia — a temperate oceanic climate prevails (Köppen code Cfb). This is characterised by cool summers (average 15–20 °C), mild winters (rarely below −5 °C), high humidity and rainfall distributed throughout the year.

Cities such as Amsterdam, Paris, Dublin and London are the archetype of this climate. Precipitation falls in every month, with a slight peak in autumn and winter. Snow is possible but short-lived. Summers are pleasant but rarely truly hot — heatwaves, such as those of 2003 and 2019, are exceptional events for Western Europe that are becoming more frequent due to climate change. The countries page shows which nations share this oceanic climate.

Continental climate (Eastern Europe)

The further east one travels, the greater the influence of the Asian landmass and the smaller the moderating effect of the ocean. In Poland, the Baltic states, Hungary, Romania and Ukraine a humid continental climate prevails (Dfb): warm, sometimes hot summers (25–30 °C) and severe winters with prolonged frost (−10 to −20 °C).

Moscow illustrates the extreme: the average January temperature is −9 °C, while July averages +22 °C. The temperature difference between the coldest and warmest months — the continentality index — exceeds 30 °C in Moscow, compared with only 12 °C in London. This difference partly determines biodiversity: the wildlife of Europe shifts from Atlantic coastal species to taiga and steppe animals as one travels eastward.

Mediterranean climate (Southern Europe)

The Mediterranean climate (Csa/Csb) characterises Spain, southern France, Italy, Greece and the coastal areas of the Balkans. The distinguishing feature is the seasonal reversal of precipitation: dry, warm summers and wet, mild winters. Summers are sunny and hot — averaging 28–35 °C during the day — while winter brings rainfall but rarely frost.

The Sirocco wind, originating from the Sahara Desert, can temporarily push temperatures in Italy and Greece to 40 °C or above. The parched summers increase the risk of wildfires, which have grown sharply in frequency and intensity due to climate change. Winter rainfall replenishes groundwater reserves and river basins — a vital process as the region faces increasing drought.

Tundra and polar climate (far north)

In the far north of Norway, Sweden, Finland and Russia, as well as on Svalbard and Iceland, tundra (ET) and subarctic (Dfc) climates occur. Summers are short and cool (max. 10–15 °C), winters long, dark and severe. On Svalbard — at 78° N, close to the North Pole — the average January temperature is −16 °C.

The phenomenon of the midnight sun — several weeks in which the sun never sets in summer — and the polar night — weeks without daylight in winter — are hallmarks of the high north. The polar night has a direct effect on the circadian rhythms of people and animals. Norway and Sweden compensate with the reverse: up to 20 hours of daylight per day in summer.

Mountain climate in the Alps and Caucasus

At higher elevations, different rules apply. In the Alps, temperature drops on average 6.5 °C per 1,000 metres of altitude. The tree line lies at around 1,800–2,200 metres; above 3,000 metres permanent snow and ice dominate. Mont Blanc (4,808 m) on the French-Italian border has an average annual temperature of around −8 °C at its summit.

Mountain chains also act as barriers: the Alps keep cold northerly winds away from the Po Valley in Italy and the Mediterranean coast, while the Pyrenees shelter the Iberian Peninsula. This explains why Barcelona (behind the Pyrenees) rarely sees snow, while Zaragoza — just 300 km inland — can experience severe winter frost. More on the relationship between the equator, hemispheres and climate zones is on the dedicated page.

Seasons in Europe

In Western and Central Europe the four seasons are clearly distinct, though this distinction fades towards the extremes of the continent. In the far north, summer and winter are so extreme that "spring" and "autumn" are barely recognisable as separate seasons. In the Mediterranean south, the wet/dry divide is at least as defining as the warm/cold divide.

Spring (March–May): temperatures rise rapidly; blossom and migratory birds return from Africa. Summer (June–August): in Western Europe pleasant (18–25 °C); in the south hot and dry (30–40 °C). Autumn (September–November): cooling, more rainfall, deciduous forests turn colour. Winter (December–February): mild and grey in Western Europe; in Eastern Europe with persistent frost and snow.

Climate change in Europe

Europe is warming faster than the global average. The European Environment Agency (EEA) reports that average temperatures in Europe have risen by more than 2 °C since pre-industrial times — well above the global average of around 1.2 °C (2024). The effects are visible.

Alpine glaciers lost more than a third of their volume between 2000 and 2023. Mediterranean droughts and wildfires are increasing in frequency and intensity. Heatwaves in Western Europe — rarities before 2000 — have become structural. Winters are growing milder and wetter in the north-west; drier in the south. How this affects the borders between countries as described on the countries page varies considerably by region.

The relationship between a country's position relative to the equator and hemispheres and the seasons on the continent is particularly well illustrated by Europe: the most northerly countries (Norway, Finland) lie at the same latitude as parts of Alaska and Greenland, yet enjoy a completely different climate.