Europe › Norway › Oslo
30-year normals (1991-2020)
Oslo has a humid continental climate, classified as Dfb in the Köppen system. The warmest month is July with an average high of 22°C, while the coldest month is January with lows dropping to -6°C. The annual temperature range of 28°C reflects moderate seasonal variation.
The driest month is March with only 8 rain days and 53mm of precipitation. For travellers, March through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 65% to 65% throughout the year.
Based on temperature and rainfall data, the best months to visit Oslo are April, May, June. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
Full Best Time to Visit GuideWarmest Month
22°C
July
Coldest Month
-6°C
January
Driest Month
8 days
March
Annual Range
28°C
-6° to 22°
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | -2°C | -6°C | 11 | 3h | View |
| February | 0°C | -6°C | 9 | 5h | View |
| March | 4°C | -3°C | 8 | 7h | View |
| April | 10°C | 1°C | 9 | 10h | View |
| May | 16°C | 6°C | 11 | 12h | View |
| June | 19°C | 11°C | 12 | 13h | View |
| July | 22°C | 14°C | 13 | 13h | View |
| August | 20°C | 13°C | 14 | 11h | View |
| September | 16°C | 9°C | 11 | 8h | View |
| October | 9°C | 4°C | 12 | 5h | View |
| November | 4°C | 0°C | 12 | 2h | View |
| December | 0°C | -5°C | 11 | 2h | View |
January
11 rain days, 3h sun
February
9 rain days, 5h sun
March
8 rain days, 7h sun
April
9 rain days, 10h sun
May
11 rain days, 12h sun
June
12 rain days, 13h sun
July
13 rain days, 13h sun
August
14 rain days, 11h sun
September
11 rain days, 8h sun
October
12 rain days, 5h sun
November
12 rain days, 2h sun
December
11 rain days, 2h sun
Oslo in July
Data Sources for Oslo
Climate normals represent 30-year averages (1991-2020). Individual years may vary.