Best time to visit Oslo
The best months to visit Oslo are July, August and June, based on month-by-month temperature and rainfall data. The full year of weather, daylight, holidays, and festival timing is below.
July, August and June score best for Oslo weather:
- June20° / 11°CJune brings long days, with island ferries and Aker Brygge evenings at their best.
- July23° / 13°CJuly is the warmest month, with swimming piers, outdoor dining, and summer museum hours.
- August21° / 13°CAugust is warm but wettest, so keep MUNCH, the National Museum, and Bygdøy interiors ready.
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By TripSapien Research · Updated May 20, 2026
Oslo weather by month
| Month | High | Low | Rain (mm) | Rainy days | Daylight |
|---|---|---|---|---|---|
| January | 0° | -5° | 60 | 10 | 6h |
| February | 1° | -5° | 45 | 8 | 9h |
| March | 5° | -2° | 40 | 7 | 11h |
| April | 11° | 2° | 50 | 8 | 14h |
| May | 17° | 7° | 60 | 9 | 17h |
| JuneBest weather | 20° | 11° | 80 | 10 | 18h |
| JulyBest weather | 23° | 13° | 85 | 11 | 18h |
| AugustBest weather | 21° | 13° | 105 | 11 | 15h |
| September | 16° | 9° | 80 | 9 | 13h |
| October | 10° | 4° | 90 | 10 | 10h |
| November | 4° | 0° | 85 | 11 | 7h |
| December | 1° | -4° | 50 | 10 | 6h |
Temperatures in °C. Long-term monthly averages.
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Oslo month by month
January
Oslo in January: 0.1°C high, -4.7°C low, 60mm rain over 10 days, 6.4h daylight. Cold and clearer — short daylight but skies open.
Oslo Chamber Music Festival
February
Oslo in February: 1.1°C high, -4.7°C low, 45mm rain over 8 days, 8.8h daylight. Cold and clearer — short daylight but skies open.
by:Larm
March
Oslo in March: 5.3°C high, -2.1°C low, 40mm rain over 7 days, 11.4h daylight. Cold and clearer — short daylight but skies open.
Inferno
April
Oslo in April: 11°C high, 2.1°C low, 50mm rain over 8 days, 14.2h daylight. Mild and dry — shoulder-season sweet spot.
Films from the South
May
Oslo in May: 16.7°C high, 6.8°C low, 60mm rain over 9 days, 16.8h daylight. Mild and dry — shoulder-season sweet spot.
JuneBest weather
Oslo in June: 20.4°C high, 10.8°C low, 80mm rain over 10 days, 18.4h daylight. Mild and dry — shoulder-season sweet spot.
Musikkfest (National Music Day) · Oslo Pride
JulyBest weather
Oslo in July: 22.7°C high, 13.4°C low, 85mm rain over 11 days, 17.7h daylight. Mild and dry — shoulder-season sweet spot.
AugustBest weather
Oslo in August: 21.3°C high, 12.5°C low, 105mm rain over 11 days, 15.3h daylight. Mild but rainy — flexible plans pay off.
Øyafestivalen · Findings · Oslo Jazz Festival
September
Oslo in September: 16.4°C high, 8.6°C low, 80mm rain over 9 days, 12.5h daylight. Mild and dry — shoulder-season sweet spot.
October
Oslo in October: 9.6°C high, 3.8°C low, 90mm rain over 10 days, 9.7h daylight. Mild and dry — shoulder-season sweet spot.
Films from the South
November
Oslo in November: 4.4°C high, 0°C low, 85mm rain over 11 days, 7.1h daylight. Cold and clearer — short daylight but skies open.
December
Oslo in December: 0.9°C high, -3.7°C low, 50mm rain over 10 days, 5.6h daylight. Cold and clearer — short daylight but skies open.
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