What to pack for Oslo in May
- long sleeves and a warm layer
- a medium jacket
- a compact umbrella or rain shell — rain is frequent
Humidity averages 64%; max daily wind around 16 km/h.
How May compares
Best months in Oslo: June–September. See the full best time to visit Oslo guide.
Oslo in May: the details
In May, Oslo sees average daytime highs of 16°C (61°F) and overnight lows of 7°C (44°F). Rainfall totals roughly 79 mm across 12.2 rainy days, and the sun shines about 11.9 hours per day with 16.8 hours of daylight mid-month. Relative humidity averages 64%.
In context: May is the 5th-warmest month and the 7th-wettest in Oslo. The sunniest month is June (13 h/day).
| Metric | May average |
|---|---|
| Daytime high | 16°C / 61°F |
| Overnight low | 7°C / 44°F |
| Rainfall | 79 mm over 12.2 rainy days |
| Sunshine | 11.9 h/day (16.8 h daylight) |
| Humidity | 64% |
| Travel score | 7.9 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Oslo, Norway (59.91, 10.75) — see our methodology. Actual conditions vary year to year.
Not set on Oslo? Browse the best places to visit in May ranked by travel score.
Frequently asked questions
How hot is Oslo in May?
Daytime highs in Oslo in May average 16°C (61°F); nights drop to about 7°C.
Does it rain in Oslo in May?
Expect around 12.2 rainy days and 79 mm of rainfall in May.
Is May a good time to visit Oslo?
May is a good month to visit Oslo. Overall travel score: 7.9/10. The best months are June–September.
Also good in May, near Oslo
Where should you go next month?
Get one email a month with the destinations at their seasonal best. Double opt-in, unsubscribe anytime.