Main image

Mahlum CC BY-SA 4.0 Wikimedia Commons

Alsten

Island

Island in Nordland forming part of the Helgeland coast, home to the Seven Sisters mountain chain. Visitors hike rugged ridges, sail fjords and photograph the coastal peaks that rise directly from sea-level villages.

Alsten BodøTromsøSvolværReineAltaLeknesHonningsvågLofotenAlsten

Alsten essentials

Country: Norway
Driest months: Apr-Jun
Pay in: Krone (kr)
Language: Norwegian
Emergency: 112

Alsten at a Glance

About Alsten

Alsten is an island in Nordland county in northern Norway, part of the Helgeland archipelago. It is most notable for the mountainous ridge that occupies much of the island.

The island’s dominant feature is the multi-peaked mountain chain known as the Seven Sisters, popular with hikers and visible from surrounding coastal communities. Settlement is concentrated along the lower slopes and shoreline, with ferry and road connections linking the island to nearby towns.

Alsten lies close to the mainland town of Sandnessjøen and forms part of the coastal geography of Alstahaug municipality in Nordland.

  • Regional context: Forms part of the Helgeland coastal landscape and is closely associated with the town of Sandnessjøen, which lies nearby on the mainland.

What to See#

  • Seven Sisters ridge: The Seven Sisters mountain ridge that runs along the island and is the most prominent natural feature, visible from nearby Sandnessjøen.
Things to Do
When to Go

Best Time to Visit Alsten

Summer months are most practical for visits due to calmer seas and milder temperatures.

Summer
June-August · 8-15°C
Milder weather and midnight sun influences-best for sea travel and birding.
Autumn
September-October · 5-10°C
Quieter, migratory bird movements; rougher seas possible.

Weather & Climate near Alsten

Climate

Alsten's climate is classified as Tundra - Tundra climate with cool summers (peaking in July) and freezing winters (coldest in February). Temperatures range from -6°C to 13°C. Heavy rainfall (2043 mm/year), wettest in October.

Air Quality: AQI 17 Good
Best Time to Visit
JulyAugustJune
Temperature & Rainfall
Temperature Range
29°
Warmest Month
-18°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -6° - -2° -12° 201 mm overcast 90% 9.2 m/s 0.0 low 4.4h
February Poor -6° - -3° -12° 161 mm overcast 89% 8.9 m/s 0.0 low 8.0h
March Poor -5° - -2° -11° 147 mm overcast 86% 8.0 m/s 0.2 low 11.5h
April Poor -3° - 2° -7° 124 mm overcast 84% 6.5 m/s 0.5 moderate 15.0h
May Poor 2° - 6° 0° 110 mm overcast 82% 6.1 m/s 0.8 moderate 18.6h
June Poor 5° - 10° 4° 125 mm overcast 81% 5.9 m/s 1.0 high 21.3h
July Acceptable 8° - 13° 10° 148 mm overcast 82% 5.3 m/s 1.0 moderate 19.8h
August Poor 8° - 12° 7° 171 mm overcast 84% 5.6 m/s 0.7 moderate 16.3h
September Poor 4° - 8° 2° 227 mm overcast 86% 6.8 m/s 0.3 low 12.8h
October Poor 1° - 3° -4° 241 mm overcast 87% 8.0 m/s 0.1 low 9.3h
November Poor -3° - 0° -9° 189 mm overcast 89% 8.8 m/s 0.0 low 5.7h
December Poor -5° - -1° -11° 199 mm overcast 90% 9.3 m/s 0.0 low 2.8h
Getting There & Around

How to Get to Alsten

Reachable by regional boat services and private craft from Nordland’s coastal towns. Check local ferry timetables for island landings; some routes are seasonal.

Tips for Visiting Alsten

  • Boat access is the usual way to reach Alsten-check local ferry schedules from nearby coastal towns.
  • Keep eyes on weather-Nordland coasts can change quickly; small craft should plan conservatively.
  • Bring binoculars for seabird and marine mammal watching; the archipelago supports varied birdlife.