Finland
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
689km²
Area
632km
Coastline
127m
Highest point
Orrdalsklint
17°C
Warmest sea
August
36km
To the mainland
When to go to Fasta Åland
Best to visit in May and from July to August.
The sea is warmest in August (17 °C) and coolest in February (1 °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.
Largest and most populous island of Åland in Finland
Fasta Åland is an island in Finland. It covers 689 km², with 632 km of coastline. Its highest point, Orrdalsklint, rises to 127 m. The nearest mainland is 36 km away.
Getting there
- Mariehamn Airport (MHQ)airport on the island, with scheduled flightsCar hire at MHQ airport (Mariehamn)Discover Cars · Affiliate link↗
- FerriesSkarpnåtö (Hammarland) - Snäckö (Geta), Kobba Klintar, Rödhamn
- 36 km from the mainlanddistance to the nearest continental coast
- May and from July to Augustbest months to go (from 30 years of averages)
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 Fasta Åland.
- 32beachesTjudö badstrand, Lötö simstrand, Nabbenbadet and 29 more
- 34viewpointsDjävulsberget, Torpviken birdwatching tower and 32 more
- 1lighthouses
- 4ferry terminalsMariehamn, Mariehamn Western Harbour and 2 more
- 20marinasHavsvidden gästhamn, ÅSS Marina, Lervikshamnen and 17 more
- 20named peaksOrrdalsklint, Getabergen, Ingbyberget and 17 more
- 2castles and fortsKastelholms slott, Borgboda fornborg
- 423ruins and archaeological sitesFlyhagen/Knösäkern, Björkens/Söderskog, Kvarnbacken and 420 more
- 27waymarked walking routesJomala Vandringsled, Sadelinleden, St Olav Waterway Åland and 24 more
- 10campsitesSöderö Stugby, Kattnäs Camping, Gröna uddens camping and 7 more
- 37hotels, guesthouses and apartments
- 69restaurants, 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.
Cross-checked with our atlases
Fasta Åland in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Fasta Åland, each with its own numbers.
18beaches and covesCoastya
47mountainsPeakyas
27lakesLakeyas
Highest point
127m
prominence 129 m · according to Peakyas
Largest lake
5.1km²
Vandöfjärden
according to Lakeyas
Warmest lake
23.7°C
Kvarnbo Trask
surface water, warmest month · according to Lakeyas
Beach with the warmest sea
16.8°C
Stora Viken
sea in the warmest month · according to Coastya
18 beaches
on Coastya, the beach atlas
- Kalmarvikencove16.7°C
- Landvikencove16.7°C
- Norrvikencove16.7°C
- Södervikcove16.7°C
- Fladancove16.7°C
- Stora Vikencove16.8°C
- Kallvikencove16.7°C
- Ytterbyvikencove16.7°C
10 more on CoastyaOpen Coastya ↗
47 mountains
on Peakyas, the mountain atlas
- Orrdalsklintprominence 129 m127m
- Skålberg60m
- Badhusberget, Mariehamn40m
- Getabergen15m
- Lotsberget14m
- Hammarudda1m
- Sviby Kasberg
- Kummelberget
39 more on PeakyasOpen Peakyas ↗
27 lakes
on Lakeyas, the lake atlas
- Vandöfjärden5.1km²
- Östra Kyrksundet2.1km²
- Långsjön1.5km²
- Långsjö1.3km²
- Västanträsk0.80km²
- Inre Verkviken0.49km²
- Sonröda träsk0.44km²
- Prästträsket0.16km²
19 more on LakeyasLakeyas is coming soonOpen Lakeyas ↗
The shape of the land.
On average the island stands 22 m above the sea. 100 % of it is below 200 m.
- 94 %0–50 m
- 6 %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.
20 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Towns on the island
- Mariehamn10,682 people
- Ytterby6,384 people
- Yomala5,789 people
- Jomala3,662 people
- Tjudö2,630 people
- Finström2,412 people
- Saltvik1,691 people
- Hammarland1,395 people
- Godby1,369 people
- Sund1,016 people
- Bomarsund1,016 people
- Geta452 people
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 1 | 0 | 1 | 5 | 10 | 14 | 18 | 18 | 15 | 9 | 6 | 3 |
| Night low (°C) | -1 | -2 | -1 | 2 | 6 | 11 | 16 | 16 | 12 | 7 | 4 | 1 |
| Sea (°C) | 2 | 1 | 1 | 2 | 6 | 10 | 16 | 17 | 14 | 10 | 7 | 4 |
| Rain (mm) | 53 | 40 | 38 | 36 | 42 | 58 | 58 | 64 | 60 | 70 | 68 | 62 |
| Wet days | 12 | 10 | 10 | 8 | 7 | 9 | 10 | 12 | 11 | 13 | 15 | 14 |
| Sun h/day | 0.2 | 2.2 | 5.6 | 7.7 | 10.0 | 10.5 | 9.6 | 7.8 | 5.0 | 2.2 | 0.2 | 0.0 |
| Wind (km/h) | 28 | 25 | 24 | 21 | 19 | 19 | 19 | 21 | 24 | 26 | 27 | 29 |
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 | +1.3 | +1.7 | +2.1 | +2.0 | +0.8 | +3.5 | +0.6 | +0.7 | +0.8 | +1.2 | +1.3 | +1.8 |
| 2021 | +1.8 | +0.4 | +0.6 | +1.6 | +0.9 | +3.3 | +3.1 | +0.2 | −0.6 | +0.6 | +0.8 | +0.2 |
| 2022 | +0.4 | +0.8 | +1.2 | +1.4 | +0.9 | +2.5 | +1.5 | +0.9 | +0.3 | +1.4 | +1.2 | +0.5 |
| 2023 | +0.7 | +0.2 | +0.8 | +0.2 | +0.6 | +2.1 | +1.0 | +0.1 | +1.8 | +0.4 | ±0.0 | −1.0 |
| 2024 | −1.1 | −0.5 | −0.1 | −0.3 | +0.1 | +2.2 | +0.5 | +0.3 | +1.5 | +1.4 | −0.4 | −0.4 |
| 2025 | ±0.0 | +0.2 | +0.7 | +1.2 | +0.3 | −0.6 | +0.7 | −0.6 | +1.0 | +1.4 | +2.4 | +1.9 |
+1 warmer than usual −1 cooler than usual
Nearby
More islands nearby.
SwedenAbout these numbers
| Names, area, population | Wikidata (Q23038) · 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 |
| Beaches, mountains, lakes and waterfalls | Coastya, Peakyas, 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.
beaches
Find your beach: sea temperature, sun and swimming month by month.Visit lakes
Every lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit mountains
Every summit in 3D: summit weather, the 0 °C line, huts and trails.Visit 
waterfalls
Every waterfall: height, flow month by month and when it roars.Coming soonVisit 
islands
Every island from the sea up: size, sea temperature, ferries and 3D.You are here
rivers
Every river from source to sea: the journey, the flow and the basin in numbers.Visit 
canyons
Every canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Visit