Climate and monthly weather forecast
Tønsberg, Norway

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The climate of Tønsberg

Geo-positioned in the south of Norway, Tønsberg settles within the marine west coast climate zone, as determined by the Köppen climate classification system. Its denotion is Cfb, a climate type known for generally mild temperatures influenced greatly by the neighbouring sea. The average monthly temperatures range from -2.5°C (27.5°F) in February to 19.1°C (66.4°F) in July, indicating gentle weather patterns induced by the oceanic influence.

Rainfall, though well-distributed throughout the year, sees a steep increase in precipitation from May through December, ranging from 23mm (0.91") to 65mm (2.56"). However, it is noteworthy that rainfall amounts do not exhibit a significant difference from one month to another. Snowfall, on the other hand, is mainly observed in the winter months, with highest levels reaching 111mm (4.37") in January, while almost completely absent from May to October.

In terms of sunlight, June brings the largest quantities, with daylight hours extending up to 18.5h. Conversely, December has the shortest days with 6.3 daylight hours. Sunshine hours mirror this pattern but achieve their peak in July with 11.6h. These fluctuations in daylight, inherent to the high latitudes of Norway are quite common.

Winds in Tønsberg are relatively moderate; the highest wind speed is 19.7km/h (12.2mph) in November and December with gusts reaching up to 32.3km/h (20.1mph) in December.

The best time to visit Tønsberg

Visiting Tønsberg promises to be the most enjoyable during the summer season. Notably, the months from June to August provide an appreciable balance between warm temperatures, adequate sunlight, and lower rainfalls. Average temperatures during these months range from 16.7°C (62.1°F) to 19.1°C (66.4°F) with the addition of plentiful sunshine, with hours extending from 15.3h to 18.5h. These conditions provide tourists with the opportunity to fully explore Tønsberg's outdoor environments.

The worst time to visit Tønsberg

Winter months from December to February may be considered less optimal for tourism due to colder weather and shortened daylight hours. With temperature lows averaging from -0.8°C (30.6°F) to -2.5°C (27.5°F) and the daylight reduced to between 6.3h and 7h, outdoor activities may be less enjoyable.

Spring weather in Tønsberg

Spring months in Tønsberg, stretching from March to May, are marked by a gradual increase in temperatures, illuminating daylight, and decreased snowfall. March experiences a rise in temperature to 3.4°C (38.1°F) from the cold winter months, which ascends further to 13.3°C (55.9°F) by May. The rainfall tends to be modest, contributing to the pleasant weather with a slight bump in May with 43mm (1.69").

Summer weather in Tønsberg

Summer, occurring between June and August, is characterized by the highest temperatures and satisfying amounts of daylight. The temperature hovers between 16.7°C (62.1°F) to 19.1°C (66.4°F), creating the warmest conditions Tønsberg experiences. Longer days dominate, accumulating between 17.7h to 18.5h of daylight, thus enabling longer periods for outside activities or excursions.

Autumn weather in Tønsberg

Autumn in Tønsberg, from September to November, is characterized by a drop in temperature, dwindling daylight, and an increase in rainfall. Temperature begins to lower in September, reaching 15.3°C (59.5°F), which then steadily falls to 5.3°C (41.5°F) in November. The daylight duration also diminishes to around 7.7 hours. Rainfall, however, increases notably, with a high of 65mm (2.56") in November.

Winter weather in Tønsberg

Winter in Tønsberg, spanning from December to February, experiences the coldest temperatures and shortest daylight hours, making it the coldest season of the year. The temperature can fall to a low of -2.5°C (27.5°F) in February and generally stays below freezing. Daylight throughout winter contracts significantly from 6.3h to 7h. However, the winter season often presents a captivating spectacle, with snowfall peaking at 111mm (4.37") in January, cloaking the city in a serene frosty blanket.

Weather in January

January is the coldest month in Tønsberg, Norway, distinguished by brief daylight hours and frequent snow showers. Temperature hovers from a chilly -2.5°C (27.5°F) to a crisp high of 0.4°C (32.7°F). Moreover, the city experiences snowfall during the majority of the days, turning landscapes into a winter wonderland. Weather in January »

Weather in February

In Tønsberg, the second month of the year is characterized by a slight rise in temperatures, amid persistent wintry conditions. In terms of climatic parameters, the city records an average snowfall of 93mm (3.66"), which is a decrease from January. Weather in February »

Weather in March

The arrival of March signals the beginning of a transition towards milder weather conditions in Tønsberg. An average high temperature of 3.4°C (38.1°F) marks the incremental rise from the colder months of January and February. Weather in March »

Weather in April

With the advent of April, Tønsberg welcomes spring, reflected by increased daylight hours and rising temperature. The city witnesses a significant rise in daytime temperatures, reaching an average high of 8.8°C (47.8°F). This warmer trend is accompanied by a fall in snowfall, replaced by light to moderate rain. Weather in April »

Weather in May

May brings warmer temperatures and increased daylight hours to Tønsberg, painting the city with vibrant spring colours. The temperature soars to a comfortable average high of 13.3°C (55.9°F), marking the onset of the warm season. Weather in May »

Weather in June

June ushers in the Norwegian summer in Tønsberg, marked by long daylight hours and comfortable temperatures. Temperatures climb to an average high of 16.7°C (62.1°F), speaking volumes of the warm summer days. This month also witnesses an increase in rain, registering an average of 45mm (1.77") throughout the month. Weather in June »

Weather in July

July, the peak summer month in Tønsberg, is characterized by balmy temperatures, ample sunshine, and high sea temperatures. The highest average temperature for the year, 19.1°C (66.4°F), is reported in this month, making it a perfect time for outdoor activities. Weather in July »

Weather in August

Even though it is still summer, August sees a marginal drop in temperatures from July in Tønsberg. The city experiences temperatures that range from 13.5°C (56.3°F) to 18.4°C (65.1°F), marking the closing phase of the warm season. Weather in August »

Weather in September

In Tønsberg, September is synonymous with the beginning of the fall season, witnessing a significant drop in temperature and daylight hours. Temperatures settle around 15.3°C (59.5°F) on average, marking the onset of cooler weather. Weather in September »

Weather in October

October presents the onset of chill in Tønsberg, as temperatures continue their gradual descent. The city experiences daytime temperatures of 9.8°C (49.6°F) on average, a noticeable decline from September. As a prelude to the impending winter, the city records the return of snowfall with an average snow accumulation of 2mm (0.08"). Weather in October »

Weather in November

November in Tønsberg is marked by the definitive arrival of winter weather, with increased snowfall and dropping temperatures. The temperatures continue to plunge from 2.8°C (37°F) to 5.3°C (41.5°F), indicating the forthcoming harsh winter. Weather in November »

Weather in December

The end of the year brings the coldest period in Tønsberg, characterised by limited daylight hours and heavy snowfall. Temperatures stay within a narrow band from -0.8°C (30.6°F) to 1.9°C (35.4°F), bringing a chill in the air. Weather in December »
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Frequently asked questions

How many days does it rain in Tønsberg?

Throughout the year, there are 130.2 rainfall days, and 549mm (21.61") of precipitation is accumulated.

When does it snow in Tønsberg?

January through April, October through December are months with snowfall in Tønsberg.

When does it snow the most in Tønsberg?

January is the month with the most snowfall in Tønsberg, Norway. Snow falls for 9.9 days and accumulates 111mm (4.37") of snow.

How much does it snow in Tønsberg?

In Tønsberg, Norway, during the entire year, snow falls for 37 days and aggregates up to 389mm (15.31") of snow.

What is the month with the lowest UV index in Tønsberg?

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

What part of the year is the coldest in Tønsberg?

February is the month when Tønsberg sees the average lowest temperatures, with a high of 0.3°C (32.5°F) and a low of -3°C (26.6°F).

What is the most humid month in Tønsberg?

February is the most humid month in Tønsberg, Norway, with an average relative humidity of 85%.

What is the month with the coldest sea water in Tønsberg?

The month with the coldest seawater is March, with an average sea temperature of 2.8°C (37°F).

What is the least humid month in Tønsberg?

April and May, with an average relative humidity of 72%, are the least humid months.

What is the driest month in Tønsberg?

The month with the least rainfall in Tønsberg, Norway, is April, when the rain falls for 8.5 days and typically collects 23mm (0.91") of precipitation.

When it does not snow in Tønsberg?

May through September are months without snowfall.

When are the longest days in Tønsberg?

The month with the longest days is June, with an average of 18h and 30min of daylight.

What month has the most sunshine in Tønsberg?

June has the most sunshine of the year in Tønsberg, with an average of 11.6h of sunshine.

What month is the hottest in Tønsberg?

July is Tønsberg's warmest month, registering average high temperatures of 19.1°C (66.4°F) and lows of 13.7°C (56.7°F).

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

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

What month is the sea warmest in Tønsberg?

With an average sea temperature of 18.4°C (65.1°F), August is the month with the warmest seawater.

When is Daylight Saving Time (DST) in Tønsberg?

On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Tønsberg, 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 Tønsberg?

The month with the most rainfall is November, when the rain falls for 11.9 days and typically aggregates up to 65mm (2.56") of precipitation.

What is the month with the shortest days in Tønsberg?

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

What is the month with the least sunshine in Tønsberg?

December has the least sunshine of the year, with an average of 3.4h of sunshine.

Average pressure
Tønsberg, Norway

Average pressure - Tønsberg, Norway

The month with the highest atmospheric pressure is April (1014.4mbar).
The month with the lowest atmospheric pressure is December (1008mbar).

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Average wind speed
Tønsberg, Norway

Average wind speed - Tønsberg, Norway

The windiest months (with the highest average wind speed) are November and December (19.7km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).

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Average humidity
Tønsberg, Norway

Average humidity - Tønsberg, Norway

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April and May (72%).

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Average rainfall
Tønsberg, Norway

Average rainfall - Tønsberg, Norway

The wettest month (with the highest rainfall) is November (65mm).
The driest month (with the least rainfall) is April (23mm).

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Average rainfall days
Tønsberg, Norway

Average rainfall days - Tønsberg, Norway

The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is February (5.9 days).

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Average snowfall
Tønsberg, Norway

Average snowfall - Tønsberg, Norway

The month with the highest snowfall is January (111mm).
The months with the least snowfall are May, June, July, August and September (0mm).

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Average snowfall days
Tønsberg, Norway

Average snowfall days - Tønsberg, Norway

The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature
Tønsberg, Norway

Average sea temperature - Tønsberg, Norway

The best month for swimming (with the highest average sea temperature) is August (18.4°C).
The coldest month (with the lowest average sea temperature) is March (2.8°C).

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Average daylight / Average sunshine
Tønsberg, Norway

Average daylight / Average sunshine - Tønsberg, Norway

The month with the longest days is June (Average daylight: 18h and 30min).
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 36min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

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Average sunshine days
Tønsberg, Norway

Average sunshine days - Tønsberg, Norway

The month with the most sunshine days is April (19.9 days).
The months with the least sunshine days are June and July (13.4 days).

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Average UV index
Tønsberg, Norway

Average UV index - Tønsberg, 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).

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Average visibility
Tønsberg, Norway

Average visibility - Tønsberg, Norway

The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).

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Tønsberg, Norway

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