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What is the weather like in Oslo in spring?

Temperatures and rain in Oslo from March to May, and when spring really starts.

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Short answer

Spring in Oslo warms fast, with the average temperature rising from around 1 °C in March to around 11 °C in May. The 1991–2020 normals for Oslo (Blindern) are 1.3 °C in March, 6.2 °C in April and 11.4 °C in May. By the climate definition, spring arrives around 8 March, when the normal daily average passes 0 °C.

Norway in autumn, winter and spring a round calendar wheel with four seasons shown as a snowflake, a leaf, a sun and a raindrop around a small mountain

Why

  1. Climatologists define spring as the period when the normal daily mean temperature is between 0 and 10 °C and rising (Store norske leksikon).
  2. In MET's 1991–2020 daily normals for Blindern, the average passes 0 °C on 8 March and reaches 10 °C on 7 May, so spring in Oslo lasts about two months.
  3. March is Oslo's driest month with a normal of 41 mm, while April and May have 48 mm and 60 mm.

Details

April is a month of change: the normal daily average climbs from 3.7 °C on 1 April to 8.8 °C on 30 April. May is the mildest spring month, and Norway's National Day on 17 May is, in Visit Norway's words, a highlight of the season. Visit Norway also notes that many people head to the mountains at Easter to enjoy the snow before it melts.

Tip

Dress in layers and be ready for sun, rain and even snow, as Visit Norway advises for spring trips.

What may differ

Single years can differ a lot from the normal. April 2026 averaged 8.0 °C at Blindern, well above the 6.2 °C normal, while May 2026 was close to normal at 11.7 °C.

People also ask

  • What is the weather like in Oslo in April?
  • When does spring come to Oslo?

Sources

Information checked on 15 October 2026.

Norway in autumn, winter and spring
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