December weather forecastPortinfer, Jersey
December
Weather in December
December wraps up the year in Portinfer with the coldest average temperatures between 10.8°C (51.4°F) and 9.2°C (48.6°F), and rain accumulating to 66mm (2.6"). With the shortest daylight hours, the days are brief and the nights long, typical of the winter season. The maximum wind gust rises to 48.4km/h (30.1mph), contributing to the chill in the air. Despite being winter, snowfall remains minimal, contributing little to the overall weather conditions. The cloud cover climbs back to 61%, the same as January, completing the yearly cycle.Temperature
Portinfer commences December with an average high-temperature of a still fresh 10.8°C (51.4°F), maintaining a close resemblance to the previous month. Night temperatures in December exhibit a subtle decrease, settling at an average of 9.2°C (48.6°F).Humidity
The months with the lowest humidity are February, November and December, with an average relative humidity of 78%.Rainfall
In Portinfer, during December, the rain falls for 20.5 days and regularly aggregates up to 66mm (2.6") of precipitation. In Portinfer, during the entire year, the rain falls for 191.6 days and collects up to 531mm (20.91") of precipitation.Snowfall
February, April through October and December are months without snowfall.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 07:43 and sunset at 16:13. On the last day of the month, sunrise is at 08:03 and sunset at 16:20 GMT.
Sunshine
In Portinfer, the average sunshine in December is 4.1h.UV index
In December, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 3 during December leads to these advisories:
Take necessary precautions - Suggestions to elude sunburn are provided. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Portinfer, Jersey
- Average high temperature in December: 10.8°C
The warmest month (with the highest average high temperature) is August (18.1°C).
The month with the lowest average high temperature is February (9°C).
- Average low temperature in December: 9.2°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (6.9°C).
Average pressure in December
Portinfer, Jersey
- Average pressure in December: 1016.9mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in December
Portinfer, Jersey
- Average wind speed in December: 34.3km/h
The windiest month (with the highest average wind speed) is December (34.3km/h).
The calmest month (with the lowest average wind speed) is July (20.6km/h).
Average humidity in December
Portinfer, Jersey
- Average humidity in December: 78%
The month with the highest relative humidity is June (84%).
The months with the lowest relative humidity are February, November and December (78%).
Average rainfall in December
Portinfer, Jersey
- Average rainfall in December: 66mm
The wettest month (with the highest rainfall) is November (74mm).
The driest months (with the least rainfall) are May and July (27mm).
Average rainfall days in December
Portinfer, Jersey
- Average rainfall days in December: 20.5 days
The month with the highest number of rainy days is November (20.7 days).
The month with the least rainy days is May (12.7 days).
Average snowfall in December
Portinfer, Jersey
- Average snowfall in December: 0mm
The months with the highest snowfall are January, March and November (1mm).
The months with the least snowfall are February, April, May, June, July, August, September, October and December (0mm).
Average snowfall days in December
Portinfer, Jersey
- Average snowfall days in December: 0.2 days
The months with the highest number of snowfall days are February and March (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Portinfer, Jersey
- 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: 4h and 6min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Portinfer, Jersey
- Average sunshine days in December: 7.4 days
The month with the most sunshine days is May (15.3 days).
The month with the least sunshine days is November (6.5 days).
Average UV index in December
Portinfer, Jersey
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in December
Portinfer, Jersey
- Average cloud cover in December: 61
The months with the most cloud cover are January, November and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Portinfer, Jersey
- 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).
