Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
December brings a slight decrease in temperature, down from a refreshing 13.5°C (56.3°F) in November to a frosty 9.1°C (48.4°F). Isernia experiences a mean low-temperature of 1.7°C (35.1°F) during December.Humidity
The average relative humidity in December in Isernia is 82%.Rainfall
In Isernia, in December, it is raining for 13.8 days, with typically 64mm (2.52") of accumulated precipitation. Throughout the year, in Isernia, there are 186.2 rainfall days, and 769mm (30.28") of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Isernia, in December, snow falls for 1.6 days, with typically accumulated 7mm (0.28") of snow. In Isernia, during the entire year, snow falls for 9.1 days and aggregates up to 149mm (5.87") of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 07:10 and sunset at 16:33. On the last day of December, sunrise is at 07:29 and sunset at 16:42 CET.
Sunshine
In December, the average sunshine is 6.1h.UV index
The months with the lowest UV index in Isernia are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Isernia?
What is the average humidity in December in Isernia?
How many days does it rain in December in Isernia?
How much does it snow in Isernia in December?
What is the month with the shortest days in Isernia?
How many hours of daylight does Isernia have in December?
When is the sunrise / sunset in December in Isernia?
How many hours of sunshine does Isernia have in December?
When is the lowest UV index in Isernia?
What is the UV index reading in December in Isernia?
Average temperature in December
Isernia, Italy
- Average high temperature in December: 9.1°C
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (7.4°C).
- Average low temperature in December: 1.7°C
The month with the highest average low temperature is August (15.2°C).
The coldest month (with the lowest average low temperature) is January (0.3°C).
Average pressure in December
Isernia, Italy
- Average pressure in December: 1018.4mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is July (1013.8mbar).
Average wind speed in December
Isernia, Italy
- Average wind speed in December: 9.2km/h
The windiest month (with the highest average wind speed) is February (10.2km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in December
Isernia, Italy
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (62%).
Average rainfall in December
Isernia, Italy
- Average rainfall in December: 64mm
The wettest month (with the highest rainfall) is November (103mm).
The driest month (with the least rainfall) is August (33mm).
Average rainfall days in December
Isernia, Italy
- Average rainfall days in December: 13.8 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is August (11.5 days).
Average snowfall in December
Isernia, Italy
- Average snowfall in December: 7mm
The month with the highest snowfall is February (68mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Isernia, Italy
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Isernia, Italy
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 6h and 1min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Isernia, Italy
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is August (16.8 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in December
Isernia, Italy
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Isernia, Italy
- Average cloud cover in December: 36
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in December
Isernia, Italy
- Average visibility in December: 9km
The months with the highest visibility are July and August (10km).
The months with the lowest visibility are January, February and November (8km).
