Weather in Oslo in May
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Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youIn May, Oslo sees average highs of 15.0°C (59.0°F) and lows of 5.5°C. Conditions are cool and moderately rainy (11 rainy days), with roughly 12.0 hours of sunshine a day. This is peak season for good reason — conditions are close to ideal. For the complete picture, see the best time to visit Oslo — every month compared. Once you know when to go, find your Oslo packing list at 247PackingList.
Get ready for Oslo in May
Search flights to Oslo
Compare 100+ airlines for May — one search, best price.
Search Flights →Thermal travel layers
Pack proper layers — winters are genuinely cold and evenings drop fast year-round.
Check Price →What to pack for Oslo in May
- Warm layers
- Light jacket or fleece
- Comfortable walking shoes
- Light waterproof layer
Compare all months in Oslo
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 0.9°C | 66.7mm | 8/10 |
| February | 2.3°C | 55.3mm | 8/10 |
| March | 5.2°C | 47.4mm | 10/10 |
| April | 10.1°C | 47.4mm | 10/10 |
| May | 15.0°C | 64.0mm | 10/10 |
| June | 22.1°C | 79.8mm | 10/10 |
| July | 20.3°C | 131.1mm | 9/10 |
| August | 20.3°C | 83.3mm | 10/10 |
| September | 16.4°C | 80.0mm | 10/10 |
| October | 9.9°C | 104.5mm | 9/10 |
| November | 4.5°C | 77.2mm | 8/10 |
| December | -1.0°C | 83.9mm | 6/10 |
Full month-by-month guide: best time to visit Oslo →
For facts about Norway — currency, language and dialling code — see our Norway country guide at 247CountryInfo. Travellers also find it useful to keep a Oslo travel guide to hand. Check clothing sizes in Norway before you shop.
Frequently Asked Questions
Is May a good time to visit Oslo?
May rates 10/10 for visiting Oslo — excellent time to visit. Expect average highs of 15.0°C, 64.0mm of rain across the month and about 12.0 hours of daily sunshine.
What is the temperature in Oslo in May?
In May, Oslo has average highs of 15.0°C (59.0°F) and average lows of 5.5°C (41.9°F).
Does it rain in Oslo in May?
Some rain is likely. Oslo averages 64.0mm across about 11 rainy days in May, so a light waterproof layer is worth packing.
What should I wear in Oslo in May?
For Oslo in May (15.0°C highs / 5.5°C lows), pack warm layers plus light jacket or fleece, comfortable walking shoes, light waterproof layer.
More essentials for Oslo in May
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.