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Norway NorwayIsland

Seiland

579 km² rising to 1,078 m out of the Norwegian Sea.

When to go

Seiland seen from space, cut out from the sea (Sentinel-2)
N 5 km

Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.

In numbers

579km²

Area

293km

Coastline

1,078m

Highest point

Seilandstuva

10°C

Warmest sea

August

4km

To the mainland

When to go to Seiland

Good all year round.

The sea is warmest in August (10 °C) and coolest in March (4 °C). The water never reaches 21 °C: bring a wetsuit.

Sea temperature (the water level) Air: night low to afternoon high Wet days

Averages 1991–2020. Sea: NOAA OISST, the water within 35 km of the coast. Air, rain and sun: NASA POWER. Best months weigh warm afternoons (23–30 °C), sea of 24 °C or more and few wet days.

Island in Finnmark, Norway

Seiland is an island in Norway. It covers 579 km², with 293 km of coastline. Its highest point, Seilandstuva, rises to 1,078 m. The nearest mainland is 4 km away.

Read more on Wikipedia

Getting there

Plan the trip

Ferries, stays and things to do

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

On the island

What you find on Seiland.

  • 5ferry terminalsKårhamn kai, Hakkstabben, Altneset and 2 more
  • 1marinas
  • 5named peaksSeiland, Kaarhamntind, Hønsebyfjellet and 2 more

Counted in OpenStreetMap, the map anyone can edit, inside the island's outline. A low number may only mean nobody has mapped it yet.

Cross-checked with our atlases

Seiland in our other atlases

Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Seiland, each with its own numbers.

  • 32beaches and covesCoastya
  • 30lakesLakeyas
  • Largest lake

    0.97km²

    Vuolit Ruollajávri

    according to Lakeyas

  • Warmest lake

    17.9°C

    Fagervikvannet

    surface water, warmest month · according to Lakeyas

  • Beach with the warmest sea

    10.3°C

    Nordbukta

    sea in the warmest month · according to Coastya

32 beaches

on Coastya, the beach atlas

  1. Nordbuktacove10.3°C
  2. Hompavikacove10.3°C
  3. Klemetbuktacove9.9°C
  4. Mellabuktacove9.9°C
  5. Støvelhamnacove9.9°C
  6. Biggagåppicove10.3°C
  7. Skarvbuktacove10.3°C
  8. Komagnesbuktacove9.9°C

24 more on CoastyaOpen Coastya ↗

30 lakes

on Lakeyas, the lake atlas

  1. Eidvågvatnet0.55km²
  2. Hammarjávri0.46km²
  3. Bårdfjordvannet0.45km²
  4. Øvrevannet0.33km²
  5. Tjuvvatnet0.28km²
  6. Guicavaggejavri0.28km²
  7. Rámsojávri0.27km²
  8. Strovmmajávri0.25km²

22 more on LakeyasLakeyas is coming soonOpen Lakeyas ↗

The shape of the land.

On average the island stands 376 m above the sea. 29 % of it is below 200 m.

  • 8 %0–50 m
  • 21 %50–200 m
  • 39 %200–500 m
  • 32 %500–1,000 m
  • <1 %1,000–2,000 m

Share of the island's area in each altitude band, from the Copernicus DEM (30 m, read at 30–240 m on large islands).

Size, for real

Next to islands you may know.

Seiland579 km²
Madeira Island742 km²
Tenerife2,038 km²

20 km

All outlines drawn to the same scale (Natural Earth and OpenStreetMap).

Month by month

The weather on the island.

JanFebMarAprMayJunJulAugSepOctNovDec
Afternoon high (°C)-3-3-12591312941-1
Night low (°C)-6-7-5-2269861-2-4
Sea (°C)54445710109876
Rain (mm)747089668092969090998591
Wet days191720171818171818211820
Sun h/day0.10.42.45.37.16.96.24.63.21.10.1—
Wind (km/h)242423201816151418192224

Averages 1991–2020 for the ~55 km NASA POWER cell over the island; the sea from NOAA OISST.

Recent years

Warmer and cooler years at sea.

Each month's sea temperature compared with its 1991–2020 average, in degrees.

JanFebMarAprMayJunJulAugSepOctNovDec
2020+0.1+0.5+0.2−0.6−0.1+0.8+0.6+1.0+1.1+1.3+1.0+0.8
2021+0.9+0.3+0.7+1.3±0.0+0.2+0.1+0.5+0.2+0.3±0.0−0.2
2022−0.1−0.1+0.2+0.1−0.5+0.6+1.5+1.0+0.5+0.5+0.9+0.3
2023+0.4+0.5+0.1+0.1±0.0+0.3+0.2+0.6+0.4+0.1−0.1−0.4
2024−0.3−0.3±0.0−0.1−0.4+0.9+1.4+2.8+2.8+2.1+1.5+0.3
2025+0.1+0.3+0.4+0.3±0.0+0.7+0.7+1.8+2.1+1.8+1.2+0.7

+1 warmer than usual −1 cooler than usual

Photos

Seen by visitors.

Seiland2
Ragsu · CC BY-SA 3.0
Seiland1
Ragsu · CC BY-SA 3.0

About these numbers

Names, area, populationWikidata (Q3245106) · CC0
Outline© OpenStreetMap contributors · ODbL
Sea temperatureNOAA OISST v2.1 · 1991–2020
ClimateNASA POWER · 1991–2020
Relief, 3D modelCopernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA
Beaches, ports, lighthouses, trails© OpenStreetMap contributors · ODbL
TownsGeoNames · CC BY 4.0
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Beaches, mountains, lakes and waterfallsCoastya, Lakeyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; NOAA OISST; HydroLAKES (Messager et al. 2016) · CC BY 4.0, LakeTEMP (Korver et al. 2024) · CC BY 4.0

Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.

The family

Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?

Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.You are here
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.Visit
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit