December weather forecast and climate
Oslo, Norway

The scenic view of the Vigeland sculpture park in Oslo, Norway, at dusk
The scenic view of the Vigeland sculpture park in Oslo, Norway, at dusk
Average temperature in December - Oslo, Norway
  • Average high temperature in December: -0.5°C

The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-1.8°C).

  • Average low temperature in December: -5.6°C

The month with the highest average low temperature is July (12.2°C).
Coldest months (with the lowest average low temperature) are January and February (-6.8°C).

Average rainfall in December - Oslo, Norway
  • Average rainfall in December: 55mm

The wettest month (with the highest rainfall) is September (90mm).
The driest month (with the lowest rainfall) is February (36mm).

Average rainfall days in December - Oslo, Norway
  • Average rainfall days in December: 6 days

Months with the highest number of rainy days are August, October and November (8 days).
The month with the lowest number of rainy days is February (4 days).

Average sea temperature in December - Oslo, Norway
  • Average sea temperature in December: 6.3°C

The best month for swimming (with the highest average sea temperature) is August (17.9°C).
The coldest month (with the lowest average sea temperature) is March (3°C).

Average daylight in December / Average sunshine in December - Oslo, Norway
  • Average daylight in December: 6.1h

The month with the longest days is June (Average daylight: 18.7h).
The month with shortest days is December (Average daylight: 6.1h).

  • Average sunshine in December: 1.1h

The month with most sunshine is June (Average sunshine: 8.3h).
The month with least sunshine is December (Average sunshine: 1.1h).

Average UV index in December - Oslo, Norway
  • Average UV index in December: 0

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, November and December (UV index 0).

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