December weather forecast
Karlshamn, Sweden

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Weather in December

December in Karlshamn rings in the winter season. The temperature plunges to a low of 3.6°C (38.5°F), evoking a clear sense of a Nordic winter. Snowfall resumes at 35mm (1.38"), creating winter fairy tale landscapes. With just seven daylight hours, the nights become longer and the city is beautifully lit with twinkling festive lights. Despite the wind speed reaching 21.1km/h (13.1mph), the holiday cheer in the city remains intact.

Temperature

With the onset of December, the average high-temperature in Karlshamn subtly recedes from November's chilly 7.4°C (45.3°F) to a cold 3.6°C (38.5°F). The nighttime temperature demonstrates a marginal decline, averaging at 1.1°C (34°F) during December.

Humidity

The average relative humidity in December is 86%.

Rainfall

In December, the rain falls for 12.9 days. Throughout December, 24mm (0.94") of precipitation is accumulated. Throughout the year, in Karlshamn, there are 139.1 rainfall days, and 303mm (11.93") of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Karlshamn. In Karlshamn, Sweden, in December, during 5.7 snowfall days, 35mm (1.38") of snow is typically accumulated. In Karlshamn, during the entire year, snow falls for 33 days and aggregates up to 166mm (6.54") of snow.

Sea temperature

In Karlshamn, Sweden, the average seawater temperature in December is 5.7°C (42.3°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

December has the shortest days of the year, with an average of 7h and 0min of daylight.
On the first day of December in Karlshamn, sunrise is at 08:09 and sunset at 15:30. On the last day of the month, sunrise is at 08:32 and sunset at 15:34 CET.

Sunshine

The months with the least sunshine are January and December, with an average of 3.1h of sunshine.

UV index

In Karlshamn, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, an average UV index of 2 transforms into the following instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

How cold is it in Karlshamn in December?

During December, Karlshamn experiences an average high-temperature of 3.6°C (38.5°F) and a low-temperature of 1.1°C (34°F).

What is the average humidity in December in Karlshamn?

In December, the average relative humidity is 86%.

How many days does it rain in December in Karlshamn?

In Karlshamn, Sweden, in December, during 12.9 rainfall days, 24mm (0.94") of precipitation is typically accumulated.

How much does it snow in Karlshamn in December?

In Karlshamn, in December, during 5.7 snowfall days, 35mm (1.38") of snow is typically accumulated.

What is the sea water temperature in December in Karlshamn?

In Karlshamn, Sweden, the average seawater temperature in December is 5.7°C (42.3°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the month with the shortest days in Karlshamn?

The month with the shortest days in Karlshamn is December, with an average of 7h and 0min of daylight.

How many hours of daylight does Karlshamn have in December?

In Karlshamn, the average day length in December is 7h and 2min.

What time are sunrise and sunset in December in Karlshamn?

On the first day of December in Karlshamn, sunrise is at 08:09 and sunset at 15:30. On the last day of the month, sunrise is at 08:32 and sunset at 15:34 CET.

What is the month with the least sunshine in Karlshamn?

The months with the least sunshine are January and December, with an average of 3.1h of sunshine.

How long on average sun shines in December in Karlshamn?

In December, the average sunshine duration in Karlshamn is 3.1h.

What is the UV index reading in December in Karlshamn?

In Karlshamn, Sweden, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Karlshamn, Sweden

Average temperature in December - Karlshamn, Sweden
  • Average high temperature in December: 3.6°C

The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (1.8°C).

  • Average low temperature in December: 1.1°C

The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is February (-0.8°C).

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Average pressure in December
Karlshamn, Sweden

Average pressure in December - Karlshamn, Sweden
  • Average pressure in December: 1010.8mbar

The months with the highest atmospheric pressure are April and May (1015.5mbar).
The month with the lowest atmospheric pressure is December (1010.8mbar).

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Average wind speed in December
Karlshamn, Sweden

Average wind speed in December - Karlshamn, Sweden
  • Average wind speed in December: 21.1km/h

The windiest month (with the highest average wind speed) is December (21.1km/h).
The calmest month (with the lowest average wind speed) is June (15.8km/h).

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Average humidity in December
Karlshamn, Sweden

Average humidity in December - Karlshamn, Sweden
  • Average humidity in December: 86%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in December
Karlshamn, Sweden

Average rainfall in December - Karlshamn, Sweden
  • Average rainfall in December: 24mm

The wettest month (with the highest rainfall) is July (40mm).
The driest month (with the least rainfall) is April (13mm).

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Average rainfall days in December
Karlshamn, Sweden

Average rainfall days in December - Karlshamn, Sweden
  • Average rainfall days in December: 12.9 days

The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is February (8.9 days).

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Average snowfall in December
Karlshamn, Sweden

Average snowfall in December - Karlshamn, Sweden
  • Average snowfall in December: 35mm

The month with the highest snowfall is February (57mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in December
Karlshamn, Sweden

Average snowfall days in December - Karlshamn, Sweden
  • Average snowfall days in December: 5.7 days

The month with the highest number of snowfall days is January (10.5 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 December
Karlshamn, Sweden

Average sea temperature in December - Karlshamn, Sweden
  • Average sea temperature in December: 5.7°C

The best month for swimming (with the highest average sea temperature) is August (17.9°C).
The coldest months (with the lowest average sea temperature) are February and March (2.3°C).

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Average daylight in December /
Average sunshine in December
Karlshamn, Sweden

Average daylight in December / Average sunshine in December - Karlshamn, Sweden
  • Average daylight in December: 7h and 0min

The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).

  • Average sunshine in December: 3h and 1min

The months with the most sunshine are June and August (Average sunshine: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 6min).

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Average sunshine days in December
Karlshamn, Sweden

Average sunshine days in December - Karlshamn, Sweden
  • Average sunshine days in December: 11 days

The month with the most sunshine days is April (17.4 days).
The month with the least sunshine days is February (10.7 days).

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Average UV index in December
Karlshamn, Sweden

Average UV index in December - Karlshamn, Sweden
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in December
Karlshamn, Sweden

Average cloud cover in December - Karlshamn, Sweden
  • Average cloud cover in December: 69

The month with the most cloud cover is December (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in December
Karlshamn, Sweden

Average visibility in December - Karlshamn, Sweden
  • Average visibility in December: 9km

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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Karlshamn, Sweden

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