---
title: "kaamos"
translation: "The polar night."
type: "word"
category: "standard"
url: "https://finnishirl.com/words/kaamos"
canonical: "https://finnishirl.com/words/kaamos"
published: "2026-10-01"
updated: "2026-10-01"
author: "Andrey the Nomad"
site: "Finnish IRL"
license: "https://finnishirl.com/terms#ip"
---

# kaamos
URL: https://finnishirl.com/words/kaamos
Translation: The polar night.
Pronunciation: /ˈkɑːmos/
Category: standard
Archetypes: thing
Region: Finland - the phenomenon is northern; the word is national
Register: neutral
Literal meaning: A loan from Northern Sámi skábma, the polar night.
Tone and safety: Safe. Southern Finns use it loosely about dark months too - the precision below is about the phenomenon, not a rule of etiquette.
Published: 2026-10-01

Quick answer:
- Kaamos is the polar night: the stretch of winter inside the Arctic Circle when the sun never clears the horizon.
- Helsinki does not have one. Whether you get kaamos at all depends entirely on your latitude.
- In Utsjoki, Finland's northernmost municipality, it runs from late November to mid-January - around fifty days.
- What southern Finland gets instead is short, dark days, and that has its own word: pimeä.

What it means:
- The word is borrowed from Northern Sámi skábma, and it is an astronomical fact before it is a feeling. Above the Arctic Circle the sun stays below the horizon for a stretch of the winter, and the length of that stretch grows the further north you go.
- It is not black. There is a blue twilight for a few hours around the middle of the day, and snow returns most of what light there is, which is why people who have been there describe it as blue rather than dark.

How Finns use it:
- Literally, about the north. Kaamos alkoi - the polar night has begun - is a news sentence, and Yle reports it each year as the sun sets in Utsjoki for the last time until January.
- Loosely, about the mood of the dark months anywhere in the country - kaamosmasennus is seasonal depression, and kaamosväsymys the tiredness of it. That extended use is normal, and it is also where the precision goes.
- The related words are worth having: pimeä is dark or darkness generally, and it is what a Helsinki winter actually is. Ruska is the autumn colour that comes before it. Kaamosvalo is the blue light of the polar night itself.

Tone and safety:
- No risk in the word.
- Southern Finns say kaamos painaa about a dark January all the time, and southern media do the same. Nobody will correct you. The precision below is worth having because the phenomenon is real and specific, not because loose use is an error.

Common mistake:
- Treating kaamos as a synonym for winter darkness. Helsinki in December has around six hours between sunrise and sunset. That is dark and it is not kaamos.
- Assuming it means total blackness for two months. There is real twilight in the middle of the day, and in snow it is bright enough to walk in.

Examples:
- Kaamos alkoi Utsjoella eilen. - The polar night began in Utsjoki yesterday.
- Mä en kestä tätä pimeetä. - I can't stand this darkness.
- Kaamosmasennus iskee joka marraskuu. - The winter depression hits every November.

Mini dialogue:
A: Onks teillä siellä kaamos?
B: Ei oo. Täällä on vaan pimeetä.
A: Mikä ero?
B: Aurinko nousee. Vähäks aikaa, mut nousee.

FAQ:
Q: What does kaamos mean?
A: The polar night - the period inside the Arctic Circle when the sun does not rise above the horizon at all.

Q: How long does kaamos last in Finland?
A: It depends on latitude. In Utsjoki, the northernmost municipality, it runs from late November to mid-January - about fifty days.

Q: Is it completely dark during kaamos?
A: No. There is a blue twilight for a few hours around midday, and snow reflects much of what light there is.

Q: Does Helsinki have kaamos?
A: No. Helsinki is well south of the Arctic Circle and the sun rises every day of the year there. What Helsinki has is a short, dark day - pimeä, not kaamos.

Q: What is kaamosmasennus?
A: Seasonal depression - literally polar-night depression. The word is used across the whole country, including in places that have no actual kaamos.

Related words: ruska, sisu, mokki

Sources:
- Northern Finnish Lapland goes dark as polar night begins (Yle News): https://yle.fi/a/74-20196058
- Sun rises in northernmost Finland after two-month polar night (Yle News): https://yle.fi/a/3-12273306
- When the sun doesn't rise in northern Finland (thisisFINLAND, Ministry for Foreign Affairs of Finland): https://finland.fi/life-society/when-the-sun-doesnt-rise-in-northern-finland/
- Kielitoimiston sanakirja: kaamos, pimeä (Kotimaisten kielten keskus): https://www.kielitoimistonsanakirja.fi/#/kaamos
- Kotus - Institute for the Languages of Finland (Kotimaisten kielten keskus): https://en.kotus.fi/