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What is the weather like in Norway in August?

August normals, rainfall, light and what to wear on a late summer trip.

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Short answer

August is still summer in Norway, with average temperatures of 15–17 °C in Oslo and Bergen and around 11 °C in Tromsø, based on 1991–2020 normals. Rain is common: August has Oslo's highest precipitation normal, 103 mm, and Bergen's is 208 mm, so pack a waterproof jacket.

What clothes to pack for Norway a round calendar wheel with four seasons shown as a snowflake, a leaf, a sun and a raindrop around a small mountain

Why

  1. Visit Norway notes that from late June to early August the nights never get really dark anywhere in Norway.
  2. The northern lights season starts again in late August, according to Visit Norway, though you need a clear, dark sky to see them.
  3. Visit Norway says summer temperatures can reach 25–30 °C, especially in the south and in inland valleys.

Details

August is the last of the summer months of June, July and August, and Visit Norway notes that most of the snow in the mountains has melted by summer, which makes it prime time for hiking. In Trondheim the August normal is 14.1 °C. Coastal weather changes quickly, and Visit Norway says you can often experience four seasons in one day.

Tip

Pack light clothes for warm days, a wool layer for evenings and mountain trips, and waterproof, windproof outer clothing as Visit Norway recommends, plus sunscreen.

What may differ

Higher up and further north it is cooler: the August normal is 8.3 °C at Finsevatn in the mountains and 6.0 °C at Svalbard Airport.

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Sources

Information checked on 15 October 2026; normals are 30-year averages, and August weather varies from year to year.

What clothes to pack for Norway