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
A mild shift in the average high-temperature occurs in December, reducing from a cool 11.3°C (52.3°F) in November to a frosty 6.7°C (44.1°F). The nighttime temperature, during December, averages of -1.6°C (29.1°F).Humidity
In Chehel Tanan, Iran, the average relative humidity in December is 52%.Rainfall
In Chehel Tanan, in December, it is raining for 5 days, with typically 23mm (0.91") of accumulated precipitation. Throughout the year, there are 57.9 rainfall days, and 198mm (7.8") of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In December, it is snowing for 3.5 days. Throughout December, 104mm (4.09") of snow is accumulated. Throughout the year, there are 22.1 snowfall days, and 538mm (21.18") of snow is accumulated.Daylight
The month with the shortest days in Chehel Tanan is December, with an average of 10h and 6min of daylight.On the first day of December in Chehel Tanan, Iran, sunrise is at 06:51 and sunset at 17:04. On the last day of the month, sunrise is at 07:08 and sunset at 17:15 +0330.
Sunshine
In December, the average sunshine in Chehel Tanan, Iran, is 7.1h.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 reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 2 in December transforms into this advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Chehel Tanan?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December in Chehel Tanan?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Chehel Tanan, Iran
- Average high temperature in December: 6.7°C
The warmest month (with the highest average high temperature) is July (31.6°C).
The month with the lowest average high temperature is January (4.3°C).
- Average low temperature in December: -1.6°C
The month with the highest average low temperature is July (18.2°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in December
Chehel Tanan, Iran
- Average pressure in December: 1020.6mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is July (1005mbar).
Average wind speed in December
Chehel Tanan, Iran
- Average wind speed in December: 7km/h
The windiest month (with the highest average wind speed) is March (11km/h).
The calmest month (with the lowest average wind speed) is November (6.4km/h).
Average humidity in December
Chehel Tanan, Iran
- Average humidity in December: 52%
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is July (17%).
Average rainfall in December
Chehel Tanan, Iran
- Average rainfall in December: 23mm
The wettest month (with the highest rainfall) is February (37mm).
The driest month (with the least rainfall) is September (0mm).
Average rainfall days in December
Chehel Tanan, Iran
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is April (9.3 days).
The months with the least rainy days are August and September (0.9 days).
Average snowfall in December
Chehel Tanan, Iran
- Average snowfall in December: 104mm
The month with the highest snowfall is January (160mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Chehel Tanan, Iran
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (8.1 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
Chehel Tanan, Iran
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 7h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The months with the least sunshine are January and November (Average sunshine: 7h and 0min).
Average sunshine days in December
Chehel Tanan, Iran
- Average sunshine days in December: 23 days
The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is February (16.6 days).
Average UV index in December
Chehel Tanan, Iran
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Chehel Tanan, Iran
- Average cloud cover in December: 15
The months with the most cloud cover are January and February (Cloud cover 20).
The month with the least cloud cover is September (Cloud cover 5).
Average visibility in December
Chehel Tanan, 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).
