The climate in Oslo during May can be summarized as mild and reasonably dry.
May is in the spring in Oslo and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 15°C (60°F), whilst at night 5°C (41°F) is normal.
|Daytime temperature||15.3°C 59.5°F|
|Nightly temperature||5.1°C 41.2°F|
|Average temperature||10.2°C 50.4°F|
|Daily sunshine||7.9 hrs|
|Avg rainfall||56 mm 2.2 ins|
|Rainy days||14 days|
|Sea temperature||10.3°C 50.6°F|
|Windspeed||13.7kph 9 mph|
On average May is the 5th driest month of the year in Oslo with around 56mm 2.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.9 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Oslo in May 2023.
|Hottest month:||July||20.6°C 69.1°F|
|Driest month:||February||41mm 1.6ins|
|Coldest month:||January||-2.1°C 28.2°F|
|Wettest month:||September||94mm 3.7ins|