Measurements:
°C
°F
Oslo
-8°F
S 3 mph
Feels like: -16°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 22.3 °F
February 26.5 °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 +32
Bergen +20
Flam -6
Hemsedal 0
Holmenkollen -8
Lillehammer -4
Oslo -8
Stavanger +30
Tromse +14
Trondheim +12
24 Hours Weather Forecast
Oslo
Local time: 08:17
11 jan, sunday
0900 -8°F
S
3 mph
1200 4°F
SE
2 mph
1500 2°F
S
2 mph
1800 -4°F
S
2 mph
2100 -4°F
S
3 mph
12 jan, monday
0000 -2°F
SW
3 mph
0300 2°F
SW
3 mph
0600 4°F
SW
2 mph