Oslo Weather in May
Norway · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
May in Oslo sees average temperatures ranging from a low of 7.0°C (44.6°F) to a high of 16.7°C (62.1°F), with a mean of 12.0°C (53.6°F). Compared to the annual average of 7.6°C (45.7°F), this month is 4.4°C warmer than the yearly norm. Precipitation averages 66.7mm, making it approximately 13.0mm drier than the monthly average of 80.0mm. The city receives an average of 12.4 hours of sunshine per day during May, with relative humidity averaging 62.4%. Wind speeds reach an average maximum of 16.3 km/h. Snowfall averages 1.1cm during May, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Oslo, with drier-than-average conditions compared to the rest of the year.
There's something about Oslo in winter that feels like the city is performing for itself. I arrived in February expecting gloom and found magic: 50cm of snow, 4 hours of daylight, and the Holmenkollen ski jump lit up against the dark sky. Norwegians don't hibernate — they ski to work, light candles everywhere, and embrace kos, their version of coziness. Summer (June-August) is its opposite: 22°C, 18 hours of light, the fjord dotted with boats. May 17 (Constitution Day) is when the city bursts into bunader and parades. Each season here is a deliberate cultural choice.
May vs Adjacent Months
| Metric | April | May | June |
|---|---|---|---|
| Mean Temp | 5.9°C (42.6°F) | 12.0°C (53.6°F) | 17.5°C (63.5°F) |
| Rainfall | 50.1mm | 66.7mm | 91.4mm |
| Sunshine | 10.3 hrs | 12.4 hrs | 13.4 hrs |
| Humidity | 63.5% | 62.4% | 65.9% |
| Wind | 16.1 km/h | 16.3 km/h | 15.9 km/h |
| Rainy Days | 10.0 | 13.4 | 15.2 |
| Snowfall | 8.8 cm | 1.1 cm | 0.0 cm |
Seasonal Context
May falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Oslo in May, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Oslo in May?
The average temperature in Oslo during May ranges from 7.0°C (44.6°F) to 16.7°C (62.1°F), with a mean of 12.0°C (53.6°F).
How much does it rain in Oslo in May?
Oslo receives an average of 66.7mm of precipitation in May, spread across approximately 13.4 rainy days.
What should I pack for Oslo in May?
Based on May weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is May a good time to visit Oslo?
May is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Oslo
Cities with Similar May Climate (Humid Continental)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 59.91°, 10.75°. Timezone: Europe/Oslo. Last updated: 2026-07-30.