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
With the onset of December, Penteli's average high-temperature slightly adjusts, moderately receding from November's comfortable 17.7°C (63.9°F) to a still refreshing 13.7°C (56.7°F). Penteli consistently logs a low temperature averaging a frosty 9.2°C (48.6°F) during December, a modest drop from daytime temperatures.Humidity
The average relative humidity in December is 73%.Rainfall
The wettest months are January and December, with an average 49mm (1.93") of rainfall.Snowfall
March through December are months without snowfall.Daylight
The month with the shortest days in Penteli is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 07:22 and sunset at 17:05. On the last day of the month, sunrise is at 07:40 and sunset at 17:14 EET.
Sunshine
In Penteli, the average sunshine in December is 5.7h.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index in Penteli. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December?
What is the rainiest month?
How much does it rain in December?
When it does not snow?
Does it snow in December?
What is the month with the shortest days in Penteli?
What is the average length of the day in December in Penteli?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Penteli, Greece
- Average high temperature in December: 13.7°C
The warmest months (with the highest average high temperature) are July and August (30.3°C).
The month with the lowest average high temperature is January (11.9°C).
- Average low temperature in December: 9.2°C
The month with the highest average low temperature is August (23.5°C).
The coldest month (with the lowest average low temperature) is January (7.5°C).
Average pressure in December
Penteli, Greece
- Average pressure in December: 1018.2mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1011mbar).
Average wind speed in December
Penteli, Greece
- Average wind speed in December: 15.4km/h
The windiest month (with the highest average wind speed) is August (17.1km/h).
The calmest month (with the lowest average wind speed) is May (11.8km/h).
Average humidity in December
Penteli, Greece
- Average humidity in December: 73%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is August (52%).
Average rainfall in December
Penteli, Greece
- Average rainfall in December: 49mm
The wettest months (with the highest rainfall) are January and December (49mm).
The driest month (with the least rainfall) is August (3mm).
Average rainfall days in December
Penteli, Greece
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is December (12.3 days).
The month with the least rainy days is August (1.8 days).
Average snowfall in December
Penteli, Greece
- Average snowfall in December: 0mm
The month with the highest snowfall is January (33mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Penteli, Greece
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Penteli, Greece
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in December
Penteli, Greece
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is January (15.9 days).
Average UV index in December
Penteli, Greece
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Penteli, Greece
- Average cloud cover in December: 37
The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Penteli, Greece
- 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).
