December weather forecastCalais, Guernsey
December
Weather in December
Concluding the year, December's weather in Calais, Guernsey embodies the full onset of winter. The temperature range narrows, averaging between 9.2°C (48.6°F) and 11.1°C (52°F). A combined effect of high precipitation, recorded as 70mm (2.76"), and lofty wind speeds reaching maximum gusts of 49.8km/h (30.9mph) keeps the wintry feel alive. Despite the increase in cloud cover percentage to 63, a steady 8.3 daylight hours offers sufficient window to explore the city in its winter aesthetic. It emphasizes the coastal city's resilience to the winter chill, rounding off the year on a high note.Temperature
Stepping into December, Calais records an average high-temperature of a cool 11.1°C (52°F), almost consistent with November. In Calais, the month of December records an average minimum temperature of 9.2°C (48.6°F), a slight dip from the daily highs.Humidity
The months with the lowest humidity are November and December, with an average relative humidity of 77%.Rainfall
In December, the rain falls for 21.4 days. Throughout December, 70mm (2.76") of precipitation is accumulated. In Calais, during the entire year, the rain falls for 196.3 days and collects up to 557mm (21.93") of precipitation.Snowfall
In Calais, Guernsey, snow does not fall in February through December.Daylight
With an average of 8h and 18min of daylight, December has the shortest days of the year.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 08:05 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 of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 3 in December interprets into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Calais, 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
Calais, 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
Calais, 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
Calais, 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
Calais, 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
Calais, 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
Calais, 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
Calais, 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
Calais, Guernsey
- Average daylight in December: 8h and 18min
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 18min).
- 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
Calais, 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
Calais, 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
Calais, 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
Calais, 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).
