Planning a trip to Oslo in May? You are in luck! The weather is generally good, with an average maximum temperature of +16°C and approximately 5 sunny days. Just be prepared for some rain, as there are usually around 15 rainy days and 81 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Good to know:
May is usually the driest month of the year in Oslo
Average weather
☀️
+16°C
Avg. max. temperature
-2°C
Min.
+30°C
Max.
81 mm
Total precipitation
64%
Avg. humidity
2 m/s
Avg. wind
5 ☀️
Sunny Days
11 ⛅️
Cloudy
15 🌦
Rainy
Our opinion: Oslo has good weather in May.
Average temperature in Oslo in May
Here are the expected maximum, average and minimum temperatures in Oslo for May based on the historical data.
Last Year
Historical Data
Going from a maximum of +24°C during the day to a minimum of -2°C during the night, the temperature in May averages around +17°C.
The average maximum temperature goes up 65% by the end of the month, compared with the beginning of the month, from +6°C to +23°C.
Is Oslo warm or cold in May?
Oslo is typically mild in May.
Maximum temperatures go up compared to the previous month from +10°C to +16°C. The minimum temperature also goes up from +2°C to +7°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Oslo:
Water temperature in Oslo in May
Water in Oslo in May is Cold. It varies from +8°C to +14°C, with an average of +11°C.The air temperature averaging +16°C is higher than the water temperature.
In May, water temperatures are average relative to the rest of the year:
The warmest water temperatures in Oslo are reached in August, when the average sea temperature rises to +18°C. The coldest water temperatures are in March, with an average of +3°C.
Can you swim in Oslo in May?
We would not recommend swimming in Oslo in May, the water is very cold (+11°C on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +16°C
🏄♂️
Fresh
16°C - 21°C
🏊
Comfortable
21°C - 25°C
👙
Warm
25°C - 28°C
🔥
Very warm
+28°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.
Climate in Oslo in May
Oslo weather looks like this, on average, in May and the surrounding months.
April
May
June
Avg. temperature
+10°C
+16°C
+20°C
Min. temperature
-9°C
-2°C
+3°C
Max. temperature
+25°C
+30°C
+33°C
Rainfall
45 mm
81 mm
89 mm
Wind
2 m/s
2 m/s
2 m/s
Avg. water temperature
+6°C
+11°C
+15°C
Humidity
69%
64%
65%
Air pressure
1012 HPa
1013 HPa
1010 HPa
Sunny days
4
5
3
Cloudy days
12
11
11
Rainy days
11
15
16
Snowy days
3
0
0
May often has better weather than April.It’s getting warmer as May arrives. The average maximum temperature goes up from +10°C to +16°C during the day.Prepare for more rain. Average rainfall goes from 45 mm to 81 mm.It feels drier, as humidity decreases from 69% to 64%.The average wind speed doesn’t change much during May, staying around 2 m/s.The good news is there are likely to be more sunny days in May, from 4 to 5.
June brings much the same weather, it remains good.
Wind speed in Oslo in May based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Oslo is gradually increasing during May, going from 1 m/s to 3 m/s over the course of the month.
Rain
Amount of rainfall in mm during May in Oslo based on historical data.
Last Year
Historical Data
Typically, there is a 16% chance of rain on an average day in May, with total rainfall of approximately 13 mm. The maximum amount of rainfall per day is around 3 mm, which is considered light rain.On average, there are about 5 rainy days during May, so prepare to bring an umbrella.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Oslo wettest month is October, where a typical day has a 48% chance of precipitation and 114 mm of rainfall per day. March, on the other hand, is the driest month with a mere 13% chance of precipitation and 26 mm of rainfall per day.
Snow
Amount of snow in mm during May in Oslo based on historical data.
Last Year
Historical Data
Typically, there is a 0% chance of snow on an average day in May, with a total monthly snowfall of approximately 2 mm.
Here’s how May is compared with other months in the amount of snow, total mm:
How was the weather last May in Oslo?
This is the weather in Oslo in May 2023:
1 May
☁️
+6°C
2 May
☀️
+13°C
3 May
☀️
+12°C
4 May
☀️
+10°C
5 May
☀️
+13°C
6 May
☁️
+13°C
7 May
☀️
+16°C
8 May
☀️
+16°C
9 May
☁️
+16°C
10 May
☁️
+20°C
11 May
☁️
+16°C
12 May
☁️
+21°C
13 May
☁️
+21°C
14 May
☀️
+22°C
15 May
☁️
+21°C
16 May
☁️
+16°C
17 May
☀️
+15°C
18 May
☀️
+17°C
19 May
☁️
+17°C
20 May
☀️
+21°C
21 May
☀️
+24°C
22 May
☁️
+24°C
23 May
🌧️
+17°C
24 May
☀️
+20°C
25 May
☁️
+18°C
26 May
☀️
+17°C
27 May
☁️
+18°C
28 May
☀️
+18°C
29 May
☁️
+18°C
30 May
☀️
+22°C
31 May
☀️
+23°C
In May 2023 Oslo had 16 sunny days, 14 cloudy days, and 1 rainy days. The average maximum temperature was +17°C, with an absolute maximum of +24°C and a minimum of +6°C. The average humidity was 63%, with a maximum of 100% and a minimum of 29%. The average wind speed was 2 m/s, with a maximum of 6 m/s and a minimum of 0 m/s.
Are you planning a trip in May?
Climate Change over Years
This is how Oslo climate have been changing during last 43 years period.
The climate in Oslo in May has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+8°C) and the highest in 2020 (+12°C). The driest year was 1981 with only 527 mm of rainfall, and the wettest year was 2020 with 2467 mm.
FAQ
Frequently asked questions about the weather in Oslo in May:
Is May a good time to visit Oslo?
May is a really good time to go to Oslo. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Oslo.
Can you sunbathe in Oslo in May?
May has mild temperatures in Oslo. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Oslo in May?
Swimming in Oslo in May is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.
Is Oslo rainy in May?
Oslo is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Oslo in May?
Usually, it’s not very sunny in Oslo in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Oslo, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
