Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
23.2km²
Area
37km
Coastline
158m
Highest point
39,882
People
11°C
Warmest sea
August
6km
To the mainland
When to go to Tromsøya
Good all year round.
The sea is warmest in August (11 °C) and coolest in March (4 °C). The water never reaches 21 °C: bring a wetsuit.
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 Tromsø, Troms, Norway
Tromsøya is an island in Norway. It covers 23.2 km², with 37 km of coastline. Its highest point rises to 158 m. About 39,882 people live on it. The nearest mainland is 6 km away.
Getting there
- Tromsø Airport (TOS)airport on the island, with scheduled flightsCar hire at TOS airport (Tromsø)Discover Cars · Affiliate link↗
- FerriesKystruten
- 6 km from the mainlanddistance to the nearest continental coast
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 Tromsøya.
- 8beaches
- 5viewpoints
- 4ferry terminalsHurtigruten Tromsø, Tromsø Prostneset hurtigbåtkai, Prostneset havneterminal and 1 more
- 3marinasKai 10/11, Skattøra Marina, Bjerkaker Marina
- 3named peaksVarden, Grønnåsen, Rismålshaugen
- 1waterfalls
- 1castles and fortsSkansen
- 1dive centresTromsø dykkesenter
- 33hotels, guesthouses and apartments
- 125restaurants, cafés and bars
Counted in OpenStreetMap, the map anyone can edit, inside the island's outline. A low number may only mean nobody has mapped it yet.
The shape of the land.
On average the island stands 48 m above the sea. 100 % of it is below 200 m.
- 55 %0–50 m
- 45 %50–200 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.
5 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Towns on the island
- Tromsø41,915 people
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | -5 | -5 | -2 | 1 | 7 | 12 | 16 | 14 | 10 | 3 | -1 | -3 |
| Night low (°C) | -11 | -10 | -8 | -4 | 1 | 6 | 9 | 8 | 4 | -1 | -6 | -8 |
| Sea (°C) | 5 | 4 | 4 | 4 | 6 | 8 | 10 | 11 | 10 | 9 | 7 | 6 |
| Rain (mm) | 106 | 109 | 120 | 89 | 94 | 106 | 112 | 113 | 136 | 122 | 114 | 124 |
| Wet days | 18 | 17 | 19 | 17 | 17 | 18 | 18 | 19 | 19 | 19 | 18 | 20 |
| Sun h/day | 0.3 | 0.6 | 3.2 | 6.3 | 7.3 | 7.1 | 6.2 | 4.9 | 3.1 | 1.4 | 0.2 | — |
| Wind (km/h) | 15 | 14 | 14 | 11 | 10 | 8 | 7 | 7 | 8 | 9 | 12 | 14 |
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | +0.3 | +0.5 | +0.4 | +0.2 | −0.1 | +0.4 | +0.5 | +0.9 | +0.5 | +0.5 | +0.2 | −2.3 |
| 2021 | −0.9 | +0.7 | +0.8 | +0.7 | −0.1 | +0.5 | ±0.0 | ±0.0 | −0.2 | +0.4 | +0.1 | −0.5 |
| 2022 | −0.4 | −0.6 | −0.1 | −0.2 | −0.4 | +0.4 | +0.7 | +0.2 | ±0.0 | +0.5 | +0.3 | ±0.0 |
| 2023 | +0.1 | −0.2 | −0.5 | −0.3 | −0.4 | −0.2 | +0.6 | +0.7 | +0.4 | +0.1 | −0.1 | −0.4 |
| 2024 | −1.0 | −1.0 | −0.6 | −0.5 | −0.5 | +1.1 | +1.4 | +3.1 | +2.6 | +1.6 | +0.8 | −0.2 |
| 2025 | −0.8 | −0.2 | ±0.0 | ±0.0 | −0.2 | +0.6 | +0.9 | +1.5 | +1.9 | +1.7 | +1.0 | +0.5 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.




Nearby
More islands nearby.
Kvaløya, Troms
Ringvassøya
Senja
Andøya
Sørøya
Hinnøya
Langøya
SeilandAbout these numbers
| Names, area, population | Wikidata (Q1190341) · CC0 |
|---|---|
| Outline | © OpenStreetMap contributors · ODbL |
| Sea temperature | NOAA OISST v2.1 · 1991–2020 |
| Climate | NASA POWER · 1991–2020 |
| Relief, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Beaches, ports, lighthouses, trails | © OpenStreetMap contributors · ODbL |
| Towns | GeoNames · CC BY 4.0 |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
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.