December weather forecastSaint Saviour, Guernsey

December

Weather in December

Saint Saviour's December rounds up the year with full-fledged winter weather. A noticeable cold embrace ensues with a substantial drop in temperature, recording a low of around 9.2°C (48.6°F). With fewer daylight hours, the lengthy nights dominate December. Despite a high rainfall, snowfall remains absent, unlike what might be expected of this season. Transitioning towards year-end, expect consistent chilly weather penciling in the stark contrast to the warm months of the past.

Temperature

Saint Saviour's weather, upon December's arrival, documents an average high-temperature of a fresh 11.1°C (52°F), nearly identical to the prior month. A minimal decline in temperature from daytime highs is anticipated throughout the December nights, averaging a frosty 9.2°C (48.6°F).

Humidity

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

Rainfall

In Saint Saviour, in December, during 21.4 rainfall days, 70mm (2.76") of precipitation is typically accumulated. In Saint Saviour, during the entire year, the rain falls for 196.3 days and collects up to 557mm (21.93") of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

The month with the shortest days is December, with an average of 8h and 12min of daylight.
On the first day of December, 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 16:21 GMT.

Sunshine

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

UV index

The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 3 in December translates into these instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. Around midday, solar radiation is most harmful; hence, exposure should be limited. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During December, Saint Saviour experiences an average high-temperature of 11.1°C (52°F) and a low-temperature of 9.2°C (48.6°F).

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

In Saint Saviour, Guernsey, the average relative humidity in December is 77%.

In Saint Saviour, Guernsey, during December, the rain falls for 21.4 days and regularly aggregates up to 70mm (2.76") of precipitation.

February through December are months without snowfall in Saint Saviour.

In Saint Saviour, Guernsey, in December, it doesn't snow. In January, it regularly snows.

With an average of 8h and 12min of daylight, December has the shortest days of the year in Saint Saviour, Guernsey.

The average day length in December in Saint Saviour is 8h and 15min.

On the first day of December in Saint Saviour, 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 16:21 GMT.

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

In Saint Saviour, Guernsey, the average sunshine duration in December is 3.9h.

The average daily maximum UV index in December in Saint Saviour is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

13°C

11.1°C

9.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

36.8km/h

37.8km/h

35.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

5.3

5.5

Average UV index

Average cloud cover

63%

62%

Average visibility

10km

Average temperature in December
Saint Saviour, 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
Saint Saviour, 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
Saint Saviour, 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
Saint Saviour, 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
Saint Saviour, 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
Saint Saviour, 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
Saint Saviour, 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
Saint Saviour, 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
Saint Saviour, Guernsey

Average daylight in December: 8h and 12min

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 54min

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
Saint Saviour, 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
Saint Saviour, 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
Saint Saviour, 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
Saint Saviour, 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).