December weather forecast
Portadown, United Kingdom

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Weather in December

December, the first month of the winter in Portadown, is still a chilly month, with an average temperature fluctuating between 6.8°C (44.2°F) and 2.9°C (37.2°F).

Temperature

Portadown's December reports an average high-temperature of a still chilly 6.8°C (44.2°F), exhibiting a minor difference from November. December records a small disparity from daytime temperatures, marking an average low-temperature of 2.9°C (37.2°F).

Humidity

The most humid month is December, with an average relative humidity of 90%.

Rainfall

In Portadown, during December, the rain falls for 11.1 days and regularly aggregates up to 20mm (0.79") of precipitation. In Portadown, during the entire year, the rain falls for 148.5 days and collects up to 243mm (9.57") of precipitation.

Snowfall

Months with snowfall in Portadown are January through March, November and December. In Portadown, in December, snow falls for 1.2 days, with typically accumulated 4mm (0.16") of snow. In Portadown, United Kingdom, during the entire year, snow falls for 8.1 days and aggregates up to 25mm (0.98") of snow.

Daylight

The month with the shortest days in Portadown, United Kingdom, is December, with an average of 7h and 24min of daylight.
On the first day of the month, sunrise is at 8:24 am and sunset at 4:05 pm. On the last day of December, in Portadown, sunrise is at 8:47 am and sunset at 4:11 pm GMT.

Sunshine

In December, the average sunshine in Portadown is 4.1h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 2 in December transforms into this advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The solar radiation around mid-day is intense; avoid the Sun and stay safe. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

How cold is it in Portadown in December?

In December, the average high-temperature and low-temperature are 6.8°C (44.2°F) and 2.9°C (37.2°F) respectively.

What is the most humid month in Portadown?

The most humid month is December, with an average relative humidity of 90%.

What is the average humidity in December in Portadown?

In December, the average relative humidity in Portadown is 90%.

How much does it rain in Portadown in December?

In Portadown, United Kingdom, in December, it is raining for 11.1 days, with typically 20mm (0.79") of accumulated precipitation.

How much does it snow in Portadown in December?

In Portadown, United Kingdom, during December, snow falls for 1.2 days and regularly aggregates up to 4mm (0.16") of snow.

What is the month with the shortest days in Portadown?

December has the shortest days of the year in Portadown, United Kingdom, with an average of 7h and 24min of daylight.

How many hours of daylight does Portadown have in December?

In December, the average day length in Portadown, United Kingdom, is 7h and 24min.

What time are sunrise and sunset in December in Portadown?

In December, on the first day of the month, sunrise is at 8:24 am and sunset at 4:05 pm. On the last day of the month, in Portadown, United Kingdom, sunrise is at 8:47 am and sunset at 4:11 pm GMT.

How long on average sun shines in December in Portadown?

In Portadown, the average sunshine duration in December is 4.1h.

When is the lowest UV index in Portadown?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in December in Portadown?

In Portadown, United Kingdom, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Portadown, United Kingdom

Average temperature in December - Portadown, United Kingdom
  • Average high temperature in December: 6.8°C

The warmest month (with the highest average high temperature) is July (17.2°C).
The month with the lowest average high temperature is January (6.5°C).

  • Average low temperature in December: 2.9°C

The month with the highest average low temperature is August (10.8°C).
The coldest months (with the lowest average low temperature) are January and February (2.3°C).

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Average pressure in December
Portadown, United Kingdom

Average pressure in December - Portadown, United Kingdom
  • Average pressure in December: 1009.5mbar

The month with the highest atmospheric pressure is May (1015.6mbar).
The month with the lowest atmospheric pressure is November (1007.4mbar).

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Average wind speed in December
Portadown, United Kingdom

Average wind speed in December - Portadown, United Kingdom
  • Average wind speed in December: 19.3km/h

The windiest month (with the highest average wind speed) is January (19.7km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).

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Average humidity in December
Portadown, United Kingdom

Average humidity in December - Portadown, United Kingdom
  • Average humidity in December: 90%

The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is April (84%).

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Average rainfall in December
Portadown, United Kingdom

Average rainfall in December - Portadown, United Kingdom
  • Average rainfall in December: 20mm

The wettest month (with the highest rainfall) is June (30mm).
The driest month (with the least rainfall) is January (13mm).

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Average rainfall days in December
Portadown, United Kingdom

Average rainfall days in December - Portadown, United Kingdom
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is September (9.7 days).

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Average snowfall in December
Portadown, United Kingdom

Average snowfall in December - Portadown, United Kingdom
  • Average snowfall in December: 4mm

The months with the highest snowfall are January and February (8mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in December
Portadown, United Kingdom

Average snowfall days in December - Portadown, United Kingdom
  • Average snowfall days in December: 1.2 days

The month with the highest number of snowfall days is February (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Portadown, United Kingdom

Average daylight in December / Average sunshine in December - Portadown, United Kingdom
  • Average daylight in December: 7h and 2min

The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is June (Average sunshine: 7h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

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Average sunshine days in December
Portadown, United Kingdom

Average sunshine days in December - Portadown, United Kingdom
  • Average sunshine days in December: 16 days

The month with the most sunshine days is December (16 days).
The month with the least sunshine days is August (11.2 days).

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Average UV index in December
Portadown, United Kingdom

Average UV index in December - Portadown, United Kingdom
  • Average UV index in December: 2

The months with the highest UV index are June and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Portadown, United Kingdom

Average cloud cover in December - Portadown, United Kingdom
  • Average cloud cover in December: 59

The months with the most cloud cover are July and August (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 56).

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Average visibility in December
Portadown, United Kingdom

Average visibility in December - Portadown, United Kingdom
  • Average visibility in December: 9km

The months with the highest visibility are January, February, March, April, May, October, November and December (9km).
The months with the lowest visibility are June, July, August and September (8km).

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Portadown, United Kingdom

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