Measurements:
°C
°F
Oslo
58°F
S 5 mph
Feels like: 58°F
Precip: 0%
World Resorts Norway Oslo Weather May Weather in Oslo

Oslo Weather: May

Average Day Temperature: 57.9°F
Average Night Temperature: 43.7°F
Sea Water Temperature: 51.4°F
Number of Sunny Days: 11 days
Sunshine Hours: 16.0 - 18.2 hours
Number of Rainy Days: 6 days
Precipitation Totals: 2.9 in

Air Temperature in May, °F

Select Year: 2025 2024 2023

The highest day temperature in May 2025 was 79°F. The lowest night temperature was 34°F. The average values for day and night temperatures during May were 62.7°F и 43.8°F respectivly.

Oslo Water Sea Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Oslo was 52.9°F. The maximum and minimum values were 48.8°F and 57.6°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Oslo is 2.9 in.

Wind Speed in May, mph

The average wind speed in May is 6.4 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Oslo in May is 8.9 hours.

Best Time to Visit Oslo
The most sunny months:
June 11 days
May 11 days
July 11 days
The most warm months:
July 70.4 °F
August 67.1 °F
June 66.3 °F
Warmest sea temperature:
July 67.4 °F
August 66.8 °F
June 61.5 °F
The most cold months:
January 21.9 °F
February 26.1 °F
December 26.7 °F
The most rainy months:
May 6 days
August 6 days
July 6 days
The most windy months:
May 6 mph
June 6 mph
April 6 mph

Oslo on the Weather Map

Norway Resorts:
NAME
Ålesund +42
Bergen +50
Flam +30
Hemsedal +34
Holmenkollen +54
Lillehammer +52
Oslo +58
Stavanger +44
Tromse +44
Trondheim +48
24 Hours Weather Forecast
Oslo
Local time: 11:40
21 apr, tuesday
1200 58°F
S
5 mph
1500 62°F
S
5 mph
1800 64°F
SE
5 mph
2100 48°F
SE
4 mph
22 apr, wednesday
0000 44°F
S
4 mph
0300 40°F
SE
4 mph
0600 38°F
SE
4 mph
0900 52°F
SE
3 mph