December weather forecast
Derrymullan, Ireland

December

Weather in December

The first month of the winter, December, is still a chilly month in Derrymullan, Ireland, with an average temperature fluctuating between 2.6°C (36.7°F) and 7.2°C (45°F).

Temperature

Derrymullan's December reports an average high-temperature of a still chilly 7.2°C (45°F), exhibiting a minor difference from November. Derrymullan experiences a minimal drop from daytime high temperatures, recording an average low-temperature of 2.6°C (36.7°F) throughout December.

Humidity

November and December, with an average relative humidity of 91%, are the most humid months.

Rainfall

In Derrymullan, during December, the rain falls for 17.1 days and regularly aggregates up to 35mm (1.38") of precipitation. In Derrymullan, during the entire year, the rain falls for 191.7 days and collects up to 375mm (14.76") of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Derrymullan, in December, during 0.7 snowfall days, 1mm (0.04") of snow is typically accumulated. Throughout the year, there are 7.3 snowfall days, and 43mm (1.69") of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 7h and 36min of daylight.
On the first day of December, sunrise is at 8:25 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 8:48 am and sunset at 4:24 pm GMT.

Sunshine

The months with the least sunshine are January, February, October and December, with an average of 3.8h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.

Frequently asked questions

What is the average December temperature?
In December, the average high-temperature and low-temperature are 7.2°C (45°F) and 2.6°C (36.7°F) respectively.
What are the most humid months in Derrymullan?
The months with the highest humidity are November and December, with an average relative humidity of 91%.
What is the average humidity in December?
The average relative humidity in December is 91%.
How many days does it rain in December?
In Derrymullan, in December, during 17.1 rainfall days, 35mm (1.38") of precipitation is typically accumulated.
How many days does it snow in December?
In Derrymullan, in December, during 0.7 snowfall days, 1mm (0.04") of snow is typically accumulated.
What is the month with the shortest days?
With an average of 7h and 36min of daylight, December has the shortest days of the year.
What is the average length of the day in December?
The average day length in December is 7h and 37min.
What time are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 8:25 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 8:48 am and sunset at 4:24 pm GMT.
What is the month with the least sunshine?
January, February, October and December, with an average of 3.8h of sunshine, are months with the least sunshine.
How long on average sun shines in December in Derrymullan?
The average sunshine duration in December is 3.8h.
When is the lowest UV index?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the UV index intensity in December?
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Derrymullan, Ireland
Average temperature in December
Derrymullan, Ireland
  • Average high temperature in December: 7.2°C

The warmest month (with the highest average high temperature) is July (17.4°C).
The month with the lowest average high temperature is January (7°C).

  • Average low temperature in December: 2.6°C

The month with the highest average low temperature is July (10.5°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).

Average pressure in December - Derrymullan, Ireland
Average pressure in December
Derrymullan, Ireland
  • Average pressure in December: 1010mbar

The month with the highest atmospheric pressure is May (1015.6mbar).
The month with the lowest atmospheric pressure is November (1007.6mbar).

Average wind speed in December - Derrymullan, Ireland
Average wind speed in December
Derrymullan, Ireland
  • Average wind speed in December: 19km/h

The windiest month (with the highest average wind speed) is January (19.3km/h).
The calmest month (with the lowest average wind speed) is July (13.1km/h).

Average humidity in December - Derrymullan, Ireland
Average humidity in December
Derrymullan, Ireland
  • Average humidity in December: 91%

The months with the highest relative humidity are November and December (91%).
The month with the lowest relative humidity is April (85%).

Average rainfall in December - Derrymullan, Ireland
Average rainfall in December
Derrymullan, Ireland
  • Average rainfall in December: 35mm

The wettest month (with the highest rainfall) is August (45mm).
The driest month (with the least rainfall) is September (21mm).

Average rainfall days in December - Derrymullan, Ireland
Average rainfall days in December
Derrymullan, Ireland
  • Average rainfall days in December: 17.1 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is February (13.1 days).

Average snowfall in December - Derrymullan, Ireland
Average snowfall in December
Derrymullan, Ireland
  • Average snowfall in December: 1mm

The months with the highest snowfall are January and February (12mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in December - Derrymullan, Ireland
Average snowfall days in December
Derrymullan, Ireland
  • Average snowfall days in December: 0.7 days

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December / Average sunshine in December - Derrymullan, Ireland
Average daylight in December /
Average sunshine in December
Derrymullan, Ireland
  • Average daylight in December: 7h and 4min

The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is June (Average sunshine: 6h and 42min).
The months with the least sunshine are January, February, October and December (Average sunshine: 3h and 48min).

Average sunshine days in December - Derrymullan, Ireland
Average sunshine days in December
Derrymullan, Ireland
  • Average sunshine days in December: 11.5 days

The month with the most sunshine days is April (12.3 days).
The month with the least sunshine days is August (6.3 days).

Average UV index in December - Derrymullan, Ireland
Average UV index in December
Derrymullan, Ireland
  • Average UV index in December: 2

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

Average cloud cover in December - Derrymullan, Ireland
Average cloud cover in December
Derrymullan, Ireland
  • Average cloud cover in December: 62

The months with the most cloud cover are July and August (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 60).

Average visibility in December - Derrymullan, Ireland
Average visibility in December
Derrymullan, Ireland
  • Average visibility in December: 9km

The months with the highest visibility are January, February, March and December (9km).
The month with the lowest visibility is July (7km).

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