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edited by Frokor CC BY-SA 4.0 Wikimedia Commons

Karmøy

Island

Karmøy island in Rogaland mixes fishing villages, sandy beaches and the historic Avaldsnes area with Viking‑era sites; visitors drive the coast for seafood, maritime museums, surf breaks and shoreline walks.

Karmøy StavangerBergenÅlesundÅndalsnesPreikestolenBryggenKjeragSognefjordKarmøy

Karmøy essentials

Address: Karmøy Island, Rogaland, Norway

About Karmøy (island)

Karmøy is an island and municipality in Rogaland county on Norway’s southwestern coast. The island includes several towns and long stretches of coastline with historic and maritime heritage.

Visitors encounter coastal scenery, fishing villages, beaches and cultural sites tied to Norway’s maritime past. Important cultural attractions include Avaldsnes, with its medieval church and associations with Viking Age and early royal activity, as well as the towns of Kopervik and Skudeneshavn.

Karmøy has been settled since the Viking Age and earlier, serving historically as a maritime and fishing hub; Avaldsnes on the island is traditionally linked to early Norwegian royal power. Over later centuries the island developed fishing, shipbuilding and coastal trade.

The island lies off Norway’s southwest coast in Rogaland, west of the town of Haugesund across the Karmsundet strait and forms part of the coastal archipelago of the region.

  • Avaldsnes site: The island contains Avaldsnes, a site associated with Viking Age royal estates and a medieval church, making it important for Norwegian early-history tourism.

What to See#

  • Avaldsnes: Historic site with a medieval church and archaeological remains linked to Norway’s early royal and Viking Age activity; it is one of the island’s primary cultural attractions.
  • Kopervik: The main population and service centre on the island, Kopervik is the largest town and administrative hub for Karmøy municipality.
  • Skudeneshavn: A well-preserved coastal town on the island’s southern tip, known for its wooden buildings and maritime history.
When to Go

Best Time to Visit Karmøy (island)

Summer provides the most comfortable conditions for coastal exploration and outdoor activities.

Summer
Jun-Aug · 10-20 °C
Longest daylight hours, mild weather, best for road trips and coastal hikes.
Winter
Dec-Feb · -5-6 °C
Dark and dramatic - northern lights possible; rougher seas.

Weather & Climate near Karmøy (island)

Climate

Karmøy's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in August) and cold winters (coldest in February). Temperatures range from -1°C to 17°C. Abundant rainfall (1582 mm/year), wettest in October.

Air Quality: AQI 24 Good
Best Time to Visit
JuneJulyAugust
Temperature & Rainfall
Temperature Range
24°
Warmest Month
-9°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor 0° - 4° -4° 148 mm overcast 84% 6.6 m/s 0.0 low 6.7h
February Poor -1° - 4° -3° 106 mm overcast 84% 5.5 m/s 0.1 low 9.0h
March Poor 1° - 5° -2° 119 mm overcast 84% 5.6 m/s 0.2 low 11.6h
April Poor 2° - 8° 2° 74 mm overcast 84% 4.8 m/s 0.6 moderate 14.3h
May Acceptable 6° - 13° 7° 76 mm overcast 84% 4.6 m/s 1.0 high 16.8h
June Good 9° - 15° 12° 82 mm overcast 85% 4.6 m/s 1.3 high 18.2h
July Good 11° - 17° 14° 105 mm overcast 85% 4.4 m/s 1.2 high 17.5h
August Acceptable 11° - 17° 14° 140 mm overcast 84% 4.6 m/s 0.8 moderate 15.3h
September Poor 9° - 14° 12° 179 mm overcast 83% 5.5 m/s 0.4 low 12.6h
October Poor 7° - 11° 6° 195 mm overcast 82% 5.8 m/s 0.1 low 10.0h
November Poor 3° - 7° 1° 184 mm overcast 83% 6.0 m/s 0.0 low 7.4h
December Poor 1° - 5° -2° 174 mm overcast 83% 6.2 m/s 0.0 low 5.9h
Getting There & Around

How to Get to Karmøy (island)

Karmøy is connected to the mainland by bridges (notably the Karmsund Bridge) and is reachable by car from Stavanger (approximately 40-60 minutes). Regular bus services link Karmøy’s towns with regional centers and ferries connect to nearby islands.

Tips for Visiting Karmøy (island)

  • Explore the island's Viking and maritime heritage at local museums (Le Hauge and Avaldsnes) on Karmøy.
  • Drive the coastal roads slowly - the island offers several scenic viewpoints over the North Sea.
  • If visiting in summer, try local seafood in towns like Skudeneshavn; ferry schedules to surrounding isles are frequent.