Oslo Weather in May
In May, Oslo averages a high of 17°C (62°F) and a low of 7°C (44°F), from 56 years of daily records (1971–2026).
17°C
Average high
62°F
7°C
Average low
44°F
31°C
Record high
88°F · May 30, 2018
-3°C
Record low
27°F · May 1, 1971
What May Is Like in Oslo
- The coldest May reading, -3°C (27°F) on May 1, 1971, has not been matched in 55 years.
- May in Oslo has become 0.8°C (1.5°F) warmer on average: the 2012–2026 average against 1970–1989.
- The warmest May in the record was 2018; the coldest was 1979.
At least 1 mm of rain falls on 28% of May days, and the month averages 55 mm in total.
Warmest: 2018 (22.8°C)Latest: 2026 (16.8°C)10-year averageLong-run average (16.7°C)
Look Up a Day in May
See the weather in Oslo on any May date, year by year.
Source: NOAA GHCN-Daily, Oslo Blindern (1971–2026). Averages cover 1971–2026. How we compute this