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's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's mild 13.8°C (56.8°F) to a frosty 9.6°C (49.3°F). December's average low-temperature reading settles at a cold 1.2°C (34.2°F).Humidity
The average relative humidity in December is 38%.Rainfall
In Chaj, during December, the rain falls for 4 days and regularly aggregates up to 6mm (0.24") of precipitation. Throughout the year, there are 56.9 rainfall days, and 171mm (6.73") of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Chaj, Iran, in December, during 0.3 snowfall days, 2mm (0.08") of snow is typically accumulated. In Chaj, during the entire year, snow falls for 3.1 days and aggregates up to 58mm (2.28") of snow.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 06:16 and sunset at 16:26. On the last day of December, sunrise is at 06:34 and sunset at 16:36 +0330.
Sunshine
The average sunshine in December is 7.4h.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in 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?
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 Chaj?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Chaj, Iran
- Average high temperature in December: 9.6°C
The warmest month (with the highest average high temperature) is July (32.1°C).
The month with the lowest average high temperature is January (7.7°C).
- Average low temperature in December: 1.2°C
The month with the highest average low temperature is July (20.3°C).
The coldest month (with the lowest average low temperature) is January (0.1°C).
Average pressure in December
Chaj, Iran
- Average pressure in December: 1020.9mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is July (1003.1mbar).
Average wind speed in December
Chaj, Iran
- Average wind speed in December: 9km/h
The windiest month (with the highest average wind speed) is July (27.4km/h).
The calmest month (with the lowest average wind speed) is December (9km/h).
Average humidity in December
Chaj, Iran
- Average humidity in December: 38%
The months with the highest relative humidity are January and February (46%).
The months with the lowest relative humidity are June and July (17%).
Average rainfall in December
Chaj, Iran
- Average rainfall in December: 6mm
The wettest months (with the highest rainfall) are March and April (37mm).
The driest months (with the least rainfall) are July and September (0mm).
Average rainfall days in December
Chaj, Iran
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is April (11.1 days).
The month with the least rainy days is July (0.1 days).
Average snowfall in December
Chaj, Iran
- Average snowfall in December: 2mm
The month with the highest snowfall is January (31mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Chaj, Iran
- Average snowfall days in December: 0.3 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 and October (0 days).
Average daylight in December /
Average sunshine in December
Chaj, Iran
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 7h and 2min
The months with the most sunshine are June and July (Average sunshine: 12h and 18min).
The month with the least sunshine is January (Average sunshine: 7h and 6min).
Average sunshine days in December
Chaj, Iran
- Average sunshine days in December: 26.2 days
The month with the most sunshine days is July (30.8 days).
The month with the least sunshine days is April (15.8 days).
Average UV index in December
Chaj, Iran
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Chaj, Iran
- Average cloud cover in December: 13
The month with the most cloud cover is February (Cloud cover 20).
The month with the least cloud cover is September (Cloud cover 1).
Average visibility in December
Chaj, Iran
- 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).
