Steinvikholm Castle

Museum Renaissance-era island fortress near Trondheim, Norway

16th-century island fortress near Trondheim, constructed by Archbishop Olav Engelbrektsson. Visitors reach it by boat to see ruins, coastal scenery and displays about its role in Norway’s Reformation.

Main image

Steinvikholm Castle is a 16th century island fortress built by Archbishop Olav Engelbrektsson between about 1528 and 1532, located on a rocky islet off the coast of Trøndelag in Norway.

Constructed as an episcopal seat and defensive stronghold, it became a final refuge for the Catholic archbishop during the Reformation in Norway and later fell into disuse after the archbishop’s exile.

The stone castle survives as ruins and has been partially conserved; it is used today for cultural events and as a historic site illustrating the late medieval ecclesiastical power structure in Norway.

The fortress sits on a small island in the Trondheimsfjord near Stjørdal in Trøndelag and is reached from the nearby shore.

  • Access and events: Access to the ruins is by boat or short causeway and the site hosts seasonal cultural events, notably outdoor opera performances in summer.
Steinvikholm Castle
63.5434, 10.8130

How to Get to Steinvikholm Castle #

The castle is located near Stjørdal; access is by boat during the summer season from local harbours. Check local tourism offices in Stjørdal or municipal websites for seasonal boat services and guided tours.

Tips for Visiting Steinvikholm Castle #

  • Check the seasonal boat timetable if aiming to reach the island; crossings are often limited to summer months.
  • Guided visits that explain Olav Engelbrektsson's role in Norwegian history are worth joining to understand the Reformation context.

Best Time to Visit Steinvikholm Castle #

Summer months provide the most reliable access by boat and on-site services.

Summer
June-August · 10-20°C
Best time for boat crossings and open visitor facilities; local festivals sometimes take place on the island.
Late Spring/Early Autumn
May, September · 6-15°C
Quieter, cooler and still suitable for walking the castle grounds.

Weather & Climate near Steinvikholm Castle #

Climate
Temperature & Rainfall
Temperature Range
30°
Warmest Month
-23°
Coldest Month
Monthly Conditions

January

Weather

0.0
UV Index
Low
5.4h daylight

February

Weather

0.0
UV Index
Low
8.4h daylight

March

Weather

0.2
UV Index
Low
11.5h daylight

April

Weather

0.6
UV Index
Moderate
14.7h daylight

May

Weather

0.9
UV Index
Moderate
17.8h daylight

June

Weather

1.1
UV Index
High
19.8h daylight

July

Weather

1.1
UV Index
High
18.8h daylight

August

Weather

0.8
UV Index
Moderate
15.9h daylight

September

Weather

0.3
UV Index
Low
12.8h daylight

October

Weather

0.1
UV Index
Low
9.6h daylight

November

Weather

0.0
UV Index
Low
6.4h daylight

December

Weather

0.0
UV Index
Low
4.2h daylight

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