December weather forecast
Groignêt, Guernsey

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December

Weather in December

Come December, Groignêt, Guernsey witnesses a slight reduction in rainfall to 70mm (2.76") over 21.4 days. The winter season, with its chilly temperatures, crisp winds, and sparse sunlight, is in full swing. The days of mild temperatures are replaced by the characteristically cold nights of winter. The increased cloud cover and sparse sunlight contribute to the lowered spirits. A visible crescendo in wind speed marks the last month of the year, leading into the next one on a cold and windy note.

Temperature

The arrival of December denotes a barely perceptible change in the average high-temperatures to a cool 11.1°C (52°F) from November's 13°C (55.4°F). A slight dip in temperature to a chilly 9.2°C (48.6°F) marks the average nights in Groignêt during December.

Humidity

November and December, with an average relative humidity of 77%, are the least humid months in Groignêt.

Rainfall

In Groignêt, during December, the rain falls for 21.4 days and regularly aggregates up to 70mm (2.76") of precipitation. Throughout the year, in Groignêt, there are 196.3 rainfall days, and 557mm (21.93") of precipitation is accumulated.

Snowfall

In Groignêt, snow does not fall in February through December.

Daylight

With an average of 8h and 12min of daylight, December has the shortest days of the year in Groignêt.
On the first day of the month, sunrise is at 07:45 and sunset at 16:13. On the last day of December, in Groignêt, sunrise is at 08:06 and sunset at 16:20 GMT.

Sunshine

January, November and December, with an average of 3.9h of sunshine, are months with the least sunshine.

UV index

In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index, 3 during December, leads to the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are December temperatures in Groignêt?
The high-temperature, in December, in Groignêt, records 11.1°C (52°F), while the low-temperature is 9.2°C (48.6°F).
What is the least humid month in Groignêt?
The months with the lowest humidity are November and December, with an average relative humidity of 77%.
What is the average humidity in December in Groignêt?
In Groignêt, the average relative humidity in December is 77%.
How much does it rain in Groignêt in December?
In Groignêt, in December, it is raining for 21.4 days, with typically 70mm (2.76") of accumulated precipitation.
When it does not snow in Groignêt?
In Groignêt, Guernsey, snow does not fall in February through December.
Does it snow in Groignêt in December?
In Groignêt, Guernsey, in December, it doesn't snow. In January, it regularly snows.
What is the month with the shortest days in Groignêt?
With an average of 8h and 12min of daylight, December has the shortest days of the year in Groignêt.
How many hours of daylight does Groignêt have in December?
In December, the average day length in Groignêt is 8h and 15min.
What time are sunrise and sunset in December in Groignêt?
In December, on the first day of the month, sunrise is at 07:45 and sunset at 16:13. On the last day of the month, sunrise is at 08:06 and sunset at 16:20 GMT.
What is the month with the least sunshine in Groignêt?
The months with the least sunshine in Groignêt are January, November and December, with an average of 3.9h of sunshine.
How long on average sun shines in December in Groignêt?
In December, the average sunshine duration in Groignêt, Guernsey, is 3.9h.
What is the UV index reading in December in Groignêt?
In December, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
13°C
11.1°C
9.8°C
Average low temperature
10.9°C
9.2°C
7.8°C
Average pressure
1011.5mbar
1016.5mbar
1016.1mbar
Average wind speed
34.8km/h
36km/h
34.1km/h
Average max. wind speed
36.8km/h
37.8km/h
35.8km/h
Average wind speed gusts
47.9km/h
49.8km/h
47.7km/h
Average humidity
77%
77%
78%
Average rainfall
87mm
70mm
63mm
Average rainfall days
22.8
21.4
22
Average snowfall
0mm
0mm
2mm
Average snowfall days
0
0
0.3
Average daylight
9h 1min
8h 1min
8h 4min
Average sunshine
3h 5min
3h 5min
3h 5min
Average sunshine days
4
5.3
5.5
Average UV index
3
3
3
Average cloud cover
63%
63%
62%
Average visibility
10km
10km
10km
Average temperature in December
Groignêt, Guernsey
  • Average high temperature in December: 11.1°C

The warmest month (with the highest average high temperature) is August (17.8°C).
The month with the lowest average high temperature is February (9.2°C).

  • Average low temperature in December: 9.2°C

The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7°C).

Average pressure in December
Groignêt, Guernsey
  • Average pressure in December: 1016.5mbar

The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).

Average wind speed in December
Groignêt, Guernsey
  • Average wind speed in December: 36km/h

The windiest month (with the highest average wind speed) is December (36km/h).
The calmest month (with the lowest average wind speed) is July (21.9km/h).

Average humidity in December
Groignêt, Guernsey
  • Average humidity in December: 77%

The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are November and December (77%).

Average rainfall in December
Groignêt, Guernsey
  • Average rainfall in December: 70mm

The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).

Average rainfall days in December
Groignêt, Guernsey
  • Average rainfall days in December: 21.4 days

The month with the highest number of rainy days is November (22.8 days).
The month with the least rainy days is June (11.5 days).

Average snowfall in December
Groignêt, Guernsey
  • Average snowfall in December: 0mm

The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Groignêt, Guernsey
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Groignêt, Guernsey
  • Average daylight in December: 8h and 1min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).

Average sunshine days in December
Groignêt, Guernsey
  • Average sunshine days in December: 5.3 days

The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4 days).

Average UV index in December
Groignêt, Guernsey
  • Average UV index in December: 3

The months with the highest UV index are July, August and September (UV index 5).
The month with the lowest UV index is February (UV index 2).

Average cloud cover in December
Groignêt, Guernsey
  • Average cloud cover in December: 63

The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 37).

Average visibility in December
Groignêt, Guernsey
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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