April weather forecast
Tønsberg, Norway

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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. The combination of lengthening days and warming temperatures bestows a freshness to the city. Sea temperatures also begin to rise, initiating a drop in wind speed.

Temperature

Tønsberg's April weather shows an increase in high-temperatures, moving from March's wintry 3.4°C (38.1°F) to a frosty 8.8°C (47.8°F). Tønsberg notes a consistent average low-temperature of 4.2°C (39.6°F) during April nights.

Humidity

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

Rainfall

April is the month with the least rainfall. Rain falls for 8.5 days and accumulates 23mm (0.91") of precipitation.

Snowfall

January through April, October through December are months with snowfall in Tønsberg. April is the last month it regularly snows. During 1.2 snowfall days, in April, Tønsberg aggregates 7mm (0.28") of snow. Throughout the year, in Tønsberg, Norway, there are 37 snowfall days, and 389mm (15.31") of snow is accumulated.

Sea temperature

In Tønsberg, the average seawater temperature in April is 6.4°C (43.5°F).
Note: Diving into 6.4°C (43.5°F) is practical below 10°C (50°F), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 13°C (55.4°F) feels ice-cold.

Daylight

In April, the average length of the day is 14h and 32min.
On the first day of April, sunrise is at 06:42 and sunset at 20:01. On the last day of the month, sunrise is at 05:20 and sunset at 21:10 CEST.

Sunshine

The average sunshine in April is 9.1h.

UV index

In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In April, an average UV index of 3 transforms into the following instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What is the temperature in April in Tønsberg?

Tønsberg in April has an average high-temperature of 8.8°C (47.8°F) and an average low-temperature of 4.2°C (39.6°F).

What is the least humid month in Tønsberg?

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

What is the average humidity in April in Tønsberg?

In Tønsberg, Norway, the average relative humidity in April is 72%.

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.

How much does it rain in Tønsberg in April?

In April, in Tønsberg, the rain falls for 8.5 days. Throughout April, 23mm (0.91") of precipitation is accumulated.

What is the last month it snows in Tønsberg?

April is the last month it regularly snows in Tønsberg. During 1.2 snowfall days, in April, Tønsberg aggregates 7mm (0.28") of snow.

What is the water temperature in April in Tønsberg?

In Tønsberg, Norway, the average seawater temperature in April is 6.4°C (43.5°F). Swimming in 6.4°C (43.5°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in April in Tønsberg?

The average day length in April in Tønsberg is 14h and 32min.

What time are sunrise and sunset in April in Tønsberg?

In April, on the first day of the month, sunrise is at 06:42 and sunset at 20:01. On the last day of the month, in Tønsberg, Norway, sunrise is at 05:20 and sunset at 21:10 CEST.

How many hours of sunshine does Tønsberg have in April?

In Tønsberg, the average sunshine duration in April is 9.1h.

What is the UV index intensity in April in Tønsberg?

The average daily maximum UV index in April in Tønsberg, Norway, is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in April
Tønsberg, Norway

Average temperature in April - Tønsberg, Norway
  • Average high temperature in April: 8.8°C

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).

  • Average low temperature in April: 4.2°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).

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Average pressure in April
Tønsberg, Norway

Average pressure in April - Tønsberg, Norway
  • Average pressure in April: 1014.4mbar

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 in April
Tønsberg, Norway

Average wind speed in April - Tønsberg, Norway
  • Average wind speed in April: 15.3km/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).

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Average humidity in April
Tønsberg, Norway

Average humidity in April - Tønsberg, Norway
  • Average humidity in April: 72%

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 in April
Tønsberg, Norway

Average rainfall in April - Tønsberg, Norway
  • Average rainfall in April: 23mm

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 in April
Tønsberg, Norway

Average rainfall days in April - Tønsberg, Norway
  • Average rainfall days in April: 8.5 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).

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Average snowfall in April
Tønsberg, Norway

Average snowfall in April - Tønsberg, Norway
  • Average snowfall in April: 7mm

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 in April
Tønsberg, Norway

Average snowfall days in April - Tønsberg, Norway
  • Average snowfall days in April: 1.2 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).

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Average sea temperature in April
Tønsberg, Norway

Average sea temperature in April - Tønsberg, Norway
  • Average sea temperature in April: 6.4°C

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 in April /
Average sunshine in April
Tønsberg, Norway

Average daylight in April / Average sunshine in April - Tønsberg, Norway
  • Average daylight in April: 14h and 3min

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 April: 9h and 1min

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 in April
Tønsberg, Norway

Average sunshine days in April - Tønsberg, Norway
  • Average sunshine days in April: 19.9 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).

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Average UV index in April
Tønsberg, Norway

Average UV index in April - Tønsberg, Norway
  • Average UV index in April: 3

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 cloud cover in April
Tønsberg, Norway

Average cloud cover in April - Tønsberg, Norway
  • Average cloud cover in April: 40

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).

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Average visibility in April
Tønsberg, Norway

Average visibility in April - Tønsberg, Norway
  • Average visibility in April: 10km

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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