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
The arrival of December indicates a decrease in the average high-temperature, moving from a frosty 9.3°C (48.7°F) in November to a wintry 4.1°C (39.4°F). The nighttime temperature, during December, averages of -3.6°C (25.5°F).Humidity
The average relative humidity in December is 67%.Rainfall
In Heravi, during December, the rain falls for 6.5 days and regularly aggregates up to 9mm (0.35") of precipitation. Throughout the year, there are 74.2 rainfall days, and 100mm (3.94") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 3.9 days. Throughout December, 18mm (0.71") of snow is accumulated. Throughout the year, there are 19.1 snowfall days, and 105mm (4.13") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 07:21 and sunset at 17:05. On the last day of the month, sunrise is at 07:39 and sunset at 17:14 +0330.
Sunshine
The month with the least sunshine is December, with an average of 6.8h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December in Heravi?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Heravi have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Heravi have in December?
What is the month with the lowest UV index?
What is the UV index reading in December in Heravi?
Average temperature in December
Heravi, Iran
- Average high temperature in December: 4.1°C
The warmest month (with the highest average high temperature) is July (30.4°C).
The month with the lowest average high temperature is January (1.1°C).
- Average low temperature in December: -3.6°C
The month with the highest average low temperature is July (17.9°C).
The coldest month (with the lowest average low temperature) is January (-6.6°C).
Average pressure in December
Heravi, Iran
- Average pressure in December: 1022.2mbar
The month with the highest atmospheric pressure is December (1022.2mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in December
Heravi, Iran
- Average wind speed in December: 8.3km/h
The windiest months (with the highest average wind speed) are July and August (14km/h).
The calmest month (with the lowest average wind speed) is December (8.3km/h).
Average humidity in December
Heravi, Iran
- Average humidity in December: 67%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Heravi, Iran
- Average rainfall in December: 9mm
The wettest month (with the highest rainfall) is April (16mm).
The driest months (with the least rainfall) are August and September (3mm).
Average rainfall days in December
Heravi, Iran
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is April (10.9 days).
The month with the least rainy days is August (2.4 days).
Average snowfall in December
Heravi, Iran
- Average snowfall in December: 18mm
The month with the highest snowfall is January (36mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Heravi, Iran
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (5.8 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
Heravi, Iran
- 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: 6h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in December
Heravi, Iran
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is August (25.2 days).
The month with the least sunshine days is April (15.3 days).
Average UV index in December
Heravi, Iran
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Heravi, Iran
- Average cloud cover in December: 24
The month with the most cloud cover is February (Cloud cover 28).
The months with the least cloud cover are August and September (Cloud cover 7).
Average visibility in December
Heravi, Iran
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
