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Oslo in May 2027: weather, temperatures and activities

Do you want to visit Oslo in May 2027? Discover the usual weather at this time of year, average temperatures, the risk of rain, possible activities, and our opinion on whether May is a good month to travel to Oslo, Norway.

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Is it worth visiting Oslo in May?

Check your ideal travel criteria and see if the month of May suits your plans to go to Oslo.
What matters most?
Oslo in May 2027: weather, temperatures and activities

Page summary

Oslo in May in summary
Fair weather
Min 8°C Max 14°C 145 mm 9 day(s) 76% 49% 14°C 14.1 h/day 8.3 cm
Best activities in May
Beach and swimmingHiking and trekkingCultural visits and heritageFamily and attractionsNature and landscapesNightlifeGastronomyWell-beingBoat trip and cruise
Practical guidelines
Moderate crowds Low price 03:40 20:49
Hourly weather

Average weather in Oslo in May 2027

Fair weather

The weather in Oslo in May 2027 is based on statistical data from previous years in May. This allows you to forecast the weather in May 2027. Check the hourly statistics (6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 and 3:00), with the associated average temperature, for the whole month, and also, by navigating the tabs, for the beginning, middle and end of the month.

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Climate

Climate of Oslo in May

Temperatures, precipitation, snow and monthly trends help better understand the climate in Oslo in May.

Temperatures and rain in Oslo in May

Average daily weather

Temperatures, rain and snow day by day in May, with a separate scale for snow.
Minimal Average Maximums Average rainfall Daily snow

Monthly temperatures

The month of May is highlighted to compare it quickly with the rest of the year.
Minimal Average Maximums

Monthly precipitation

The bar for the month under study is highlighted.
Average rainfall

About the climate in Oslo in May

Seasonal normals

Seasonal normals of Oslo in May

Check the seasonal normals in Oslo in May and compare the weather with the previous month and the following month (or the months of your choice by selecting months in the form below): temperatures, wind, rain, humidity, climate rating...

Last updated: 12/01/2026
Reference period for normals: January 2009 - December 2025
Month analyzed
May
Weather data April May June
Outside temperature
Average temperature 5.4°C 11.0°C 15.2°C
Maximum temperature 8.5°C 14.0°C 18.2°C
Minimum temperature 2.3°C 8.1°C 12.3°C
Record maximum temperature 22.0°C
(2020)
28.0°C
(2018)
29.0°C
(2018)
Record low temperature -9.0°C
(2013)
-3.0°C
(2020)
3.0°C
(2012)
Number of days at +30° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Number of days at +18° 1 day(s)
(3%)
8 day(s)
(26%)
15 day(s)
(50%)
Number of days below 0° 8 day(s)
(27%)
0 day(s)
(0%)
0 day(s)
(0%)
Sea temperature
Sea temperature (average) 6.4°C 10.7°C 14.8°C
Sea temperature (minimum) 3.0°C 7.4°C 11.8°C
Sea temperature (maximum) 9.7°C 13.9°C 17.9°C
Wind
Wind speed 13 km/h 14 km/h 13 km/h
Wind temperature 0.1°C 6.6°C 11.6°C
Precipitation (rain)
Precipitation 64.5 mm 144.8 mm 138.2 mm
Number of days with precipitation 13 day(s)
(43%)
18 day(s)
(58%)
18 day(s)
(60%)
Number of days with significant precipitation (greater than 5 mm) 4 day(s)
(13%)
9 day(s)
(30%)
9 day(s)
(30%)
Record precipitation in one day 45.2 mm
(2016)
54.0 mm
(2013)
38.6 mm
(2017)
Other weather data
Humidity 79% 76% 77%
Visibility 8.3 km 8.7 km 8.6 km
Cloud cover 48% 49% 46%
UV index 2 3 4
Daily sunshine 12h 14h 18h
Sunrise and sunset
Sunrise time 05h00 03h40 02h54
Sunset time 19h36 20h49 21h42
Day length 14h36 17h09 18h48
Our opinion on the climate in May
The review of Where And When very bad weather fair weather favourable weather
Activities and events

What to do in Oslo in May?

Best activities in May
Beach and swimmingHiking and trekkingCultural visits and heritageFamily and attractionsNature and landscapesNightlifeGastronomyWell-beingBoat trip and cruise
Observed weather

What was the weather like in Oslo in May last?

Find the observed weather calendar in Oslo in May 2025, with each day’s weather, temperatures and precipitation.

Mon. Tue. Wed. Thu. Fri. Sat. Sun.
1
Partly Cloudy
5°C15°C0.0 mm
2
Partly Cloudy
7°C14°C0.0 mm
3
Clear/Sunny
4°C12°C1.7 mm
4
Overcast
2°C9°C0.0 mm
5
Partly Cloudy
1°C13°C0.0 mm
6
Clear/Sunny
3°C14°C0.0 mm
7
Partly Cloudy
3°C14°C0.0 mm
8
Overcast
7°C14°C0.0 mm
9
Overcast
8°C14°C0.0 mm
10
Overcast
9°C13°C0.0 mm
11
Patchy rain nearby
8°C14°C0.1 mm
12
Partly Cloudy
8°C18°C0.0 mm
13
Clear/Sunny
9°C19°C0.0 mm
14
Clear/Sunny
5°C13°C0.0 mm
15
Clear/Sunny
4°C18°C0.0 mm
16
Clear/Sunny
7°C17°C0.0 mm
17
Clear/Sunny
9°C18°C0.0 mm
18
Clear/Sunny
9°C20°C0.0 mm
19
Clear/Sunny
10°C24°C0.0 mm
20
Clear/Sunny
11°C23°C0.0 mm
21
Clear/Sunny
5°C11°C0.1 mm
22
Patchy rain nearby
4°C10°C0.3 mm
23
Patchy rain nearby
2°C9°C1.3 mm
24
Moderate rain at times
4°C11°C3.0 mm
25
Patchy rain nearby
7°C11°C4.2 mm
26
Patchy rain nearby
8°C14°C0.9 mm
27
Moderate rain
7°C11°C5.8 mm
28
Partly Cloudy
6°C16°C0.0 mm
29
Clear/Sunny
8°C17°C0.0 mm
30
Patchy rain nearby
9°C17°C2.2 mm
31
Partly Cloudy
7°C16°C0.0 mm
Nearby

Where to go near Oslo in May?

Compare cities and destinations near Oslo in May to find another travel stop, a nearby alternative or a logical continuation of your stay in Oslo.

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Every month

Best time to visit Oslo month by month

Compare the weather in Oslo across all months of the year and open each detailed page to find the best time.

Frequently asked questions

Travel to to Oslo in May: your frequently asked questions

Short answers to the questions we ask ourselves before booking for this month.

It's an average period, nothing special. Conditions are mediocre in Oslo in May, which ranks this month 4th out of 12. The choice of region will make a real difference.

Expect an average of 14°C during the day and 8°C at night, with about 145 mm of precipitation spread over 9 rainy days.

The sea is only 11°C on average in May. Swimming is still possible, but it will be cool.

Expect about 14.1 hours of sunshine per day on average for this month.

This month is particularly suited to these activities: Beach and swimming, Hiking and trekking, Cultural visits and heritage and Family and attractions. These are the ones for which the conditions on site are most favourable.

Visitor numbers are moderate: this month is in Moderate crowds, with an index of 48/100. It is often a good compromise between weather and tranquility.

No: rates are at level Low price, with a price index of 36/100. It’s one of the most budget-friendly months.

If your dates are flexible, the most favorable months in Oslo are: June, July and August. Compare them before finalizing your departure.
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Temperatures are shown in degrees Celsius and precipitation in millimetres. Based on your country of connection, °F and inches may be more familiar to you.