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
Weather in December
Temperature
With the onset of December, Terni's climate undergoes a slight change as the average high-temperature moves from a mild 14.5°C (58.1°F) in November to a frosty 9.9°C (49.8°F). During December, Terni's temperature falls to a steady low-temperature average of 2.4°C (36.3°F).Humidity
The average relative humidity in December in Terni is 80%.Rainfall
In Terni, during December, the rain falls for 10.5 days and regularly aggregates up to 42mm (1.65") of precipitation. Throughout the year, there are 137.2 rainfall days, and 415mm (16.34") of precipitation is accumulated.Snowfall
Months with snowfall are February, November and December. December is the last month it regularly snows in Terni. During 0.7 snowfall days, in December, Terni aggregates 3mm (0.12") of snow. Throughout the year, in Terni, there are 2.9 snowfall days, and 26mm (1.02") of snow is accumulated.Daylight
The month with the shortest days in Terni, Italy, is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 07:19 and sunset at 16:37. On the last day of December, sunrise is at 07:39 and sunset at 16:46 CET.
Sunshine
In Terni, the average sunshine in December is 6.4h.UV index
The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 3 in December leads to these recommendations:
Take precautions - Protection against skin and eye damage is obliged. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Terni?
What is the average humidity in December in Terni?
How much does it rain in Terni in December?
What is the last month it snows in Terni?
What is the month with the shortest days in Terni?
How many hours of daylight does Terni have in December?
What time are sunrise and sunset in December in Terni?
How many hours of sunshine does Terni have in December?
What is the UV index reading in December in Terni?
Average temperature in December
Terni, Italy
- Average high temperature in December: 9.9°C
The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (8.8°C).
- Average low temperature in December: 2.4°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in December
Terni, Italy
- Average pressure in December: 1018.5mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is July (1013.8mbar).
Average wind speed in December
Terni, Italy
- Average wind speed in December: 9.2km/h
The windiest month (with the highest average wind speed) is February (10.7km/h).
The calmest months (with the lowest average wind speed) are July and August (7.1km/h).
Average humidity in December
Terni, Italy
- Average humidity in December: 80%
The month with the highest relative humidity is November (81%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
Terni, Italy
- Average rainfall in December: 42mm
The wettest month (with the highest rainfall) is November (55mm).
The driest month (with the least rainfall) is August (19mm).
Average rainfall days in December
Terni, Italy
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is August (7.8 days).
Average snowfall in December
Terni, Italy
- Average snowfall in December: 3mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are January, March, April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Terni, Italy
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (1.4 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
Terni, Italy
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 6h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days in December
Terni, Italy
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is August (20.9 days).
The month with the least sunshine days is May (12.6 days).
Average UV index in December
Terni, Italy
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Terni, Italy
- Average cloud cover in December: 31
The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in December
Terni, Italy
- Average visibility in December: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (9km).
Terni, Italy
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