When to go
The Best Time to Visit Oslo
Month-by-month climate data for Oslo, Norway — daily highs and lows, rain days, and an honest verdict for every month of the year.
Timing is the first real decision when planning Oslo— it drives crowds, prices and what's actually open. Here's how the year breaks down so you can pick dates that fit the trip you're building, not just the weather.
May–August. Endless daylight, fjord swims off the sauna rafts, the whole city outdoors. December is dark but cozy; February–March is city-plus-ski season.
Warmest in Oslo: Jun (21°C / 70°F) · Coolest: Jan (0°C / 32°F) · Wettest: Jul (~14 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
Oslo climate, month by month
January
0° / -5°C
~10 rain days
Tough
February
2° / -4°C
~11 rain days
Tough
March
5° / -2°C
~9 rain days
Tough
April
10° / 1°C
~8 rain days
Fair
May
16° / 6°C
~11 rain days
Good
June
21° / 12°C
~10 rain days
Excellent
July
20° / 13°C
~14 rain days
Good
August
20° / 13°C
~12 rain days
Excellent
September
16° / 9°C
~10 rain days
Good
October
10° / 5°C
~13 rain days
Fair
November
4° / 1°C
~12 rain days
Tough
December
0° / -5°C
~13 rain days
Tough
Plan around it
Dates locked in? Start from the Oslo travel guide or jump straight to a 3-day, 5-day or 7-day itinerary.