Climate and monthly weather forecastTønsberg, Norway
Climate and monthly weather forecast
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 »Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, there are 130.2 rainfall days, and 549mm (21.61") of precipitation is accumulated.
January through April, October through December are months with snowfall 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.
In Tønsberg, Norway, during the entire year, snow falls for 37 days and aggregates up to 389mm (15.31") of snow.
The months with the lowest UV index in Tønsberg are January through March, October through December, with an average maximum UV index of 2.
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).
February is the most humid month in Tønsberg, Norway, with an average relative humidity of 85%.
The month with the coldest seawater is March, with an average sea temperature of 2.8°C (37°F).
April and May, with an average relative humidity of 72%, are the least humid months.
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.
May through September are months without snowfall.
The month with the longest days is June, with an average of 18h and 30min of daylight.
June has the most sunshine of the year in Tønsberg, with an average of 11.6h of sunshine.
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).
July is the month with the highest UV index in Tønsberg, with an average maximum UV index of 5.
With an average sea temperature of 18.4°C (65.1°F), August is the month with the warmest seawater.
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.
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.
December has the shortest days of the year, with an average of 6h and 18min of daylight.
December has the least sunshine of the year, with an average of 3.4h of sunshine.
Average temperature
Tønsberg, Norway
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is February (0.3°C).
The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is February (-3°C).
Average pressure
Tønsberg, Norway
- Average pressure in January:
1011.1mbar - Average pressure in February:
1011.2mbar - Average pressure in March:
1012.2mbar - Average pressure in April:
1014.4mbar - Average pressure in May:
1014.1mbar - Average pressure in June:
1012.1mbar
- Average pressure in July:
1010.6mbar - Average pressure in August:
1011.4mbar - Average pressure in September:
1012.8mbar - Average pressure in October:
1013.6mbar - Average pressure in November:
1010.2mbar - Average pressure in December:
1008mbar
The month with the highest atmospheric pressure is April (1014.4mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed
Tønsberg, Norway
- Average wind speed in January:
19.3km/h - Average wind speed in February:
18km/h - Average wind speed in March:
16.8km/h - Average wind speed in April:
15.3km/h - Average wind speed in May:
14.7km/h - Average wind speed in June:
14km/h
- Average wind speed in July:
13.9km/h - Average wind speed in August:
14.6km/h - Average wind speed in September:
16.7km/h - Average wind speed in October:
17.9km/h - Average wind speed in November:
19.7km/h - Average wind speed in December:
19.7km/h
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).
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%).
Average rainfall
Tønsberg, Norway
The wettest month (with the highest rainfall) is November (65mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days
Tønsberg, Norway
- Average rainfall days in January:
6 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
8.5 days - Average rainfall days in April:
8.5 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
15.2 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
11.1 days - Average rainfall days in October:
11.4 days - Average rainfall days in November:
11.9 days - Average rainfall days in December:
9.3 days
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).
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).
Average snowfall days
Tønsberg, Norway
- Average snowfall days in January:
9.9 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
6.5 days - Average snowfall days in April:
1.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
3.5 days - Average snowfall days in December:
6.1 days
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).
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).
Average daylight / Average sunshine
Tønsberg, Norway
- Average daylight in January:
7h and 0min - Average daylight in February:
9h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 30min - Average daylight in May:
17h and 0min - Average daylight in June:
18h and 30min
- Average daylight in July:
17h and 42min - Average daylight in August:
15h and 30min - Average daylight in September:
12h and 48min - Average daylight in October:
10h and 12min - Average daylight in November:
7h and 42min - Average daylight in December:
6h and 18min
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).
- Average sunshine in January:
3h and 30min - Average sunshine in February:
3h and 54min - Average sunshine in March:
6h and 6min - Average sunshine in April:
9h and 6min - Average sunshine in May:
9h and 48min - Average sunshine in June:
11h and 36min
- Average sunshine in July:
11h and 24min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 18min - Average sunshine in October:
4h and 42min - Average sunshine in November:
4h and 0min - Average sunshine in December:
3h and 24min
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).
Average sunshine days
Tønsberg, Norway
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
14 days - Average sunshine days in March:
18.1 days - Average sunshine days in April:
19.9 days - Average sunshine days in May:
15.9 days - Average sunshine days in June:
13.4 days
- Average sunshine days in July:
13.4 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
14.1 days - Average sunshine days in December:
16.8 days
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).
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).
Average cloud cover
Tønsberg, Norway
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are June, July and August (Cloud cover 36).
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).
