December weather forecast
Saint Peter Port, Guernsey

englishespañol中文
Share
A calm sunny day in Saint Peter Port, Guernsey, with ships docked at the harbor
A calm sunny day in Saint Peter Port, Guernsey, with ships docked at the harbor

Weather in December

December marks the beginning of winter in Saint Peter Port, Guernsey. Rainfall remains high at 70mm (2.76") but occurs over fewer days than in November. Temperatures continue to decline, and wind speeds reach their peak, amplifying the seasonal chill. As the year concludes, daylight hours are at their shortest, and sea temperatures drop further, wrapping up the year with a distinct winter feel.

Temperature

Transitioning into December, Saint Peter Port records an average high-temperature of a fresh 11.1°C (52°F), almost identical to November's 13°C (55.4°F). Night temperatures during December experience a slight downturn, averaging a chilly 9.2°C (48.6°F).

Humidity

The months with the lowest humidity in Saint Peter Port are November and December, with an average relative humidity of 77%.

Rainfall

In Saint Peter Port, in December, during 21.4 rainfall days, 70mm (2.76") of precipitation is typically accumulated. Throughout the year, there are 196.3 rainfall days, and 557mm (21.93") of precipitation is accumulated.

Snowfall

February through December are months without snowfall.

Sea temperature

In Saint Peter Port, the average seawater temperature in December is 11°C (51.8°F).
Note: In 11°C (51.8°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F).

Daylight

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

Sunshine

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

UV index

In Saint Peter Port, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 3 during December translates into the following directions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.
[Resources]

Frequently asked questions

What are the temperatures in Saint Peter Port in December?

In December, the average high-temperature and low-temperature in Saint Peter Port, Guernsey, are 11.1°C (52°F) and 9.2°C (48.6°F) respectively.

What are the least humid months in Saint Peter Port?

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

What is the average humidity in December in Saint Peter Port?

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

How many days does it rain in December in Saint Peter Port?

In Saint Peter Port, in December, during 21.4 rainfall days, 70mm (2.76") of precipitation is typically accumulated.

When it does not snow in Saint Peter Port?

February through December are months without snowfall.

Does it snow in Saint Peter Port in December?

In Saint Peter Port, in December, it doesn't snow. In January, it regularly snows.

How cold is the water in December in Saint Peter Port?

In December, the average sea temperature is 11°C (51.8°F). Swimming in 11°C (51.8°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Saint Peter Port?

The month with the shortest days in Saint Peter Port is December, with an average of 8h and 12min of daylight.

How many hours of daylight does Saint Peter Port have in December?

In Saint Peter Port, Guernsey, the average day length in December is 8h and 15min.

What time are sunrise and sunset in December in Saint Peter Port?

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 are the months with the least sunshine in Saint Peter Port?

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

How many hours of sunshine does Saint Peter Port have in December?

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

What is the UV index intensity in December in Saint Peter Port?

In December, the average daily maximum UV index in Saint Peter Port, Guernsey, is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Saint Peter Port, Guernsey

Average temperature in December - Saint Peter Port, 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).

[Resources]

Average pressure in December
Saint Peter Port, Guernsey

Average pressure in December - Saint Peter Port, 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).

[Resources]

Average wind speed in December
Saint Peter Port, Guernsey

Average wind speed in December - Saint Peter Port, 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).

[Resources]

Average humidity in December
Saint Peter Port, Guernsey

Average humidity in December - Saint Peter Port, 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%).

[Resources]

Average rainfall in December
Saint Peter Port, Guernsey

Average rainfall in December - Saint Peter Port, 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).

[Resources]

Average rainfall days in December
Saint Peter Port, Guernsey

Average rainfall days in December - Saint Peter Port, 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).

[Resources]

Average snowfall in December
Saint Peter Port, Guernsey

Average snowfall in December - Saint Peter Port, 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).

[Resources]

Average snowfall days in December
Saint Peter Port, Guernsey

Average snowfall days in December - Saint Peter Port, 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).

[Resources]

Average sea temperature in December
Saint Peter Port, Guernsey

Average sea temperature in December - Saint Peter Port, Guernsey
  • Average sea temperature in December: 11°C

The best month for swimming (with the highest average sea temperature) is August (17°C).
The coldest months (with the lowest average sea temperature) are February and March (9°C).

[Resources]

Average daylight in December /
Average sunshine in December
Saint Peter Port, Guernsey

Average daylight in December / Average sunshine in December - Saint Peter Port, 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).

[Resources]

Average sunshine days in December
Saint Peter Port, Guernsey

Average sunshine days in December - Saint Peter Port, 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).

[Resources]

Average UV index in December
Saint Peter Port, Guernsey

Average UV index in December - Saint Peter Port, 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).

[Resources]

Average cloud cover in December
Saint Peter Port, Guernsey

Average cloud cover in December - Saint Peter Port, 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).

[Resources]

Average visibility in December
Saint Peter Port, Guernsey

Average visibility in December - Saint Peter Port, 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).

[Resources]

Saint Peter Port, Guernsey

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location