May · Norway
Best time to visit Oslo in May Weather, crowds & prices
Weather in Oslo in May
Average temperature 11°C, 54 mm of rain, about 25 days with 6+ hours of sunshine and 77% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
8.3/10
Ranked #1 of 12 months
- Avg temp
- 11°C
- Rainfall
- 54 mm
- Humidity
- 77%
- Days with 6h+ sun
- 25
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
May in Oslo scores 8.3/10 for sightseeing and cultural travel - the single best month of the year. Expect around 11°C, 54 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
Fjord trails, sculpture parks, and modern waterfront culture peak May through September.
May in Oslo tops the year's climate scores
Expect 11°C (52°F) in May. A good month for city streets, viewpoints and long meals; leave swimming for another season.
Budget for roughly 54 mm of rain this month — a flexible day or two helps — with about 25 days with 6+ hours of sunshine and 16.8 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Oslo at 8.3/10 — the reference point every other month on this page is measured against.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Budget for peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Oslo in May?
- In May, Oslo averages 11°C, 54 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 8.3/10.
- Is May a good time to visit Oslo?
- May earns a 8.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Oslo in May?
- Expect about 54 mm of rain in May. Average humidity is 77% and there are about 25 days with 6+ hours of sunshine.
Curated in Oslo
Tickets & experiences
Things to do in Oslo
Oslo, Norway. Live activities and tours from GetYourGuide, matched to this destination.