Climate and monthly weather forecast
Skien, Norway

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The climate of Skien

Classified as Dfb or Humid Continental by the Köppen climate classification, Skien possesses a climate dominated by no dry season and a warm summer. Geographically, Skien is positioned with a significant tilt towards the temperate weather sphere, with the weather patterns changing distinctively as the seasons transition.

Average temperatures demonstrate a fairly large annual range, with lows of -4.3°C (24.3°F) in January and February to highs of 19.7°C (67.5°F) in July. Noticeably, the temperature trajectory follows a sinusoidal pattern, with low temperatures prevalent from November to March, and a warm period bridging the gap from May to September. Humidity levels remain relatively stable throughout the year, with the lowest registered at 69% in May and the highest in February at 88%.

When it comes to rainfall, Skien exhibits an annual high of 85mm (3.35") in November, and the least amount of 29mm (1.14") falls in April. The year is generally wet, with the number of rainfall days peaking in July at 16.7 days and at a minimum in February, a month that experiences rain on 5.9 days on average. Furthermore, snowfall typically occurs from November to March, with January being the most snow-laden month with a reported 302mm (11.89") of snowfall. Correspondingly, daylight hours vary throughout the year, from lows of 6.3 hours to highs of 18.4 hours, reflecting the shifting seasonal patterns.

Wind speeds in Skien display minor variations across the year, with average annual wind speeds range from 10.7km/h (6.6mph) in August to 14.5km/h (9mph) in December. At its peak, wind gusts reach 25.3km/h (15.7mph) in December, making it the windiest month. Atmospheric pressure stays fairly stable, recording the lowest in December at 1007.9mb and the highest in April at 1014.5mb.

The best time to visit Skien

Considering the average weather conditions, the summer season from June to August appears to be the optimal period for visitors. Across these months, Skien enjoys warm temperatures of up to 19.7°C (67.5°F), relatively low humidity levels of around 72%, and the maximum available daylight hours, peaking at 18.4 hours in June. This span also tends to experience less snow and more sunshine, with the sun shining on average for a substantial 11.1 hours per day in June, enhancing the allure for outdoor activities and sightseeing.

The worst time to visit Skien

Contrary to summer, December to March become particularly challenging months to visit Skien. Primarily, this is due to the prevailing cold weather, with temperatures tailing off to as low as -4.3°C (24.3°F). Snowfall is also rampant during these months, reaching 302mm (11.89") in January. Corresponding daylight hours fall drastically, peaking at a scant 6.3 hours in December. The harsh weather conditions in these colder parts of the year can challenge travel plans and limit outdoor activities.

Spring weather in Skien

Spring ushers in Skien with rising temperatures and an enduring rainy season. Specifically, average temperatures rise from -2.1°C (28.2°F) in March to 9.1°C (48.4°F) in April, and 13.8°C (56.8°F) in May. Rainfall hovers at 52mm (2.05") in March but inclines to 58mm (2.28") in May. The period also welcomes an increase in daylight hours, reaching a lengthy 17 hours in May, along with an increase in sunshine hours to 9.4 hours.

Summer weather in Skien

Summer in Skien is characterized by relative warmth, with the temperature reaching highs of 19.7°C (67.5°F) in July. Corresponding humidity levels remain fairly stable, hovering between 72% to 74%. Rainfall also displays an uptick during this season, reaching 72mm (2.83") in July, the peak of the rain days notched at 16.7 in July. This season also boasts the most daylight hours and the maximum number of sunshine hours, contributing to the overall pleasant weather conditions.

Autumn weather in Skien

During the transition into Autumn, Skien experiences a gradual decline in temperatures, slipping from 14.7°C (58.5°F) in September to 4.1°C (39.4°F) in November. Average rainfall peaks during this time, with November recording a significant 85mm (3.35"). Alongside this, the amount of sunshine and daylight hours decrease, dipping to 7.7 daylight hours and 3.8 sunshine hours in November. Autumn is thematically marked by colder weather and shorter days.

Winter weather in Skien

The winter in Skien is harsh and challenging, with average low temperatures spiraling to -4.3°C (24.3°F) between January and February. Coupled with this, snowfall is prevalent, with January bearing the brunt, witnessing 302mm (11.89") of snowfall. Relatively fewer daylight hours of 6.3 in December and 7.1 in January, coupled with scarce sunshine hours, create a generally gloomy and relentless cold atmosphere throughout these months.

Weather in January

January in Skien, Norway, is characterized by freezing temperatures, marked by an average high of -0.7°C (30.7°F) and a chilling low of -4.3°C (24.3°F). This first month of the year welcomes residents with a noticeable layer of snowfall, an integral part of Norwegian winters. Weather in January »

Weather in February

Skien's climate in February, more or less, mirrors that of January. The maximum average temperature creeps slightly up to -0.6°C (30.9°F), it's still a month full of frosty mornings and freezing nights. Snowfall continues to prevail, turning the city into an ideal hotspot for winter scenery and snow sports. Weather in February »

Weather in March

By the time March rolls around in Skien, the weather starts breaking free from winter's firm grasp. The noticeable increase in average high temperatures to 3.1°C (37.6°F) demonstrates the gradual warming trend. In addition, the slimming layer of snow paves the way for occasional bouts of rainfall, signaling the arrival of spring. Weather in March »

Weather in April

April's weather in Skien distinctly shifts towards a warmer spectrum, with temperatures experiencing a healthy increase to an average high of 9.1°C (48.4°F). While remnants of the snowy cover might still linger in frozen shadows, most of Skien welcomes spring rains instead. Weather in April »

Weather in May

May in Skien, with an average maximum temperature of 13.8°C (56.8°F), is pleasantly mild. The full onset of spring is characterized by a longer span of daylight, allowing the flourishing biodiversity of the city to bask in the warmer sun. Weather in May »

Weather in June

Summer announces its arrival in Skien clearly by June. With the highest average temperature jumping to 17.6°C (63.7°F), summer activities are in full swing. The sublime Norwegian landscapes serve as great sightseeing spots and the longer daylight hours offer extended opportunities for exploration. Weather in June »

Weather in July

The peak summer month of July in Skien presents itself with the highest average temperatures of the year, rising to 19.7°C (67.5°F). As the warmest month, July encourages an increase in outdoor recreational activities, water sports, and nature exploration. Weather in July »

Weather in August

August in Skien sees a slight reduction in temperature with an average maximum of 18.7°C (65.7°F). However, the overall weather still reverberates the warmth of summer. Regular rainfall contributes to the health of the city's flora, keeping the landscape vibrant. Weather in August »

Weather in September

September in Skien introduces the early signs of autumn. The decreasing temperature, with an average maximum of 14.7°C (58.5°F), heralds fall's imminent arrival. However, sunlight hours remain considerable, allowing ample time for daytime activities. Weather in September »

Weather in October

October in Skien takes a definitive step towards autumn. The noticeable drop in average maximum temperatures to 9.1°C (48.4°F) brings about an increase in rainfall and a decrease in sunlight hours. A profound transition greets residents as the city wraps itself in the warm tones of fall. Weather in October »

Weather in November

November in Skien leans into the colder side, with the monthly high averaging around 4.1°C (39.4°F). It’s evident in the crisper air and shorter days that winter is nearing once again. Snowfall makes a comeback towards the end of the month, blanketing the cityscape in white. Weather in November »

Weather in December

Lastly, December in Skien solidly marks the return of winter. As temperatures continue to slide towards freezing, with a high around 0.7°C (33.3°F), snowfall reaches its zenith. The city presents itself as a winter wonderland perfectly set against the backdrop of the festive season. Weather in December »

Frequently asked questions

What is the coldest time of year in Skien?

Skien's January weather reaches an average high of -0.7°C (30.7°F) and an average low of -4.3°C (24.3°F), making it the coldest month.

How many days does it rain in Skien?

Throughout the year, in Skien, Norway, there are 142.3 rainfall days, and 756mm (29.76") of precipitation is accumulated.

When does it snow in Skien?

January through May, October through December are months with snowfall.

What is the snowiest month in Skien?

The month with the most snowfall is January, when snow falls for 12.5 days and typically aggregates up to 302mm (11.89") of snow.

How much does it snow in Skien?

In Skien, Norway, during the entire year, snow falls for 52 days and aggregates up to 1085mm (42.72") of snow.

What are the months with the least sunshine in Skien?

The months with the least sunshine are January and December, with an average of 3.4h of sunshine.

What are the months with the lowest UV index in Skien?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Skien, Norway.

What is the most humid month in Skien?

The most humid month in Skien, Norway, is February, with an average relative humidity of 88%.

What is the driest month in Skien?

The month with the least rainfall in Skien is April, when the rain falls for 10.3 days and typically collects 29mm (1.14") of precipitation.

What is the least humid month in Skien?

With an average relative humidity of 69%, May is the least humid month.

When it does not snow in Skien?

June through September are months without snowfall in Skien.

When are the longest days in Skien?

June has the longest days of the year, with an average of 18h and 24min of daylight.

What month has the most sunshine in Skien?

June has the most sunshine of the year in Skien, Norway, with an average of 11.1h of sunshine.

What is the warmest month in Skien?

Skien's temperature records reveal July as the warmest month, marked by average highs of 19.7°C (67.5°F) and lows of 11.8°C (53.2°F).

What is the month with the highest UV index in Skien?

With an average maximum UV index of 5, July is the month with the highest UV index in Skien, Norway.

When is Daylight Saving Time (DST) in Skien?

On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Skien, Norway, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.

What is the rainiest month in Skien?

The month with the most rainfall in Skien is November, when the rain falls for 11.9 days and typically aggregates up to 85mm (3.35") of precipitation.

What is the month with the shortest days in Skien?

December has the shortest days of the year in Skien, Norway, with an average of 6h and 18min of daylight.

Average temperature
Skien, Norway

Average temperature - Skien, Norway

The warmest month (with the highest average high temperature) is July (19.7°C).
The month with the lowest average high temperature is January (-0.7°C).

The month with the highest average low temperature is July (11.8°C).
The coldest month (with the lowest average low temperature) is February (-4.7°C).

Average pressure
Skien, Norway

Average pressure - Skien, Norway

The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).

Average wind speed
Skien, Norway

Average wind speed - Skien, Norway

The windiest month (with the highest average wind speed) is December (14.5km/h).
The calmest month (with the lowest average wind speed) is August (10.7km/h).

Average humidity
Skien, Norway

Average humidity - Skien, Norway

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (69%).

Average rainfall
Skien, Norway

Average rainfall - Skien, Norway

The wettest month (with the highest rainfall) is November (85mm).
The driest month (with the least rainfall) is April (29mm).

Average rainfall days
Skien, Norway

Average rainfall days - Skien, Norway

The months with the highest number of rainy days are July and August (16.7 days).
The month with the least rainy days is February (5.9 days).

Average snowfall
Skien, Norway

Average snowfall - Skien, Norway

The month with the highest snowfall is January (302mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days
Skien, Norway

Average snowfall days - Skien, Norway

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Skien, Norway

Average daylight / Average sunshine - Skien, Norway

The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).

The month with the most sunshine is June (Average sunshine: 11h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 24min).

Average sunshine days
Skien, Norway

Average sunshine days - Skien, Norway

The month with the most sunshine days is April (17.9 days).
The month with the least sunshine days is July (11.8 days).

Average UV index
Skien, Norway

Average UV index - Skien, Norway

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Skien, Norway

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