December weather forecastSiarak, Iran
December
Weather in December
The first month of the winter, December, is also a wintry month in Siarak, Iran, with an average temperature fluctuating between 4.5°C (40.1°F) and -2.9°C (26.8°F).Temperature
Siarak in December demonstrates a small temperature transition, adjusting from an average high of a chilly 9.7°C (49.5°F) in November to an icy 4.5°C (40.1°F). During the month of December, the nighttime temperature falls to an average of -2.9°C (26.8°F).Humidity
The average relative humidity in December is 68%.Rainfall
In Siarak, Iran, in December, during 5.8 rainfall days, 23mm (0.91") of precipitation is typically accumulated. In Siarak, during the entire year, the rain falls for 62.4 days and collects up to 178mm (7.01") of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Siarak, Iran, in December, snow falls for 4 days, with typically accumulated 91mm (3.58") of snow. Throughout the year, there are 19.5 snowfall days, and 424mm (16.69") of snow is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:28 and sunset at 17:12. On the last day of December, in Siarak, sunrise is at 07:46 and sunset at 17:22 +0330.
Sunshine
January and December, with an average of 6.7h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 during December leads to these advisories:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Stay sun-safe with clothing that is both closely woven and worn loosely. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Siarak, Iran
- Average high temperature in December: 4.5°C
The warmest month (with the highest average high temperature) is July (29.9°C).
The month with the lowest average high temperature is January (1.5°C).
- Average low temperature in December: -2.9°C
The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-6.2°C).
Average pressure in December
Siarak, Iran
- Average pressure in December: 1022.1mbar
The month with the highest atmospheric pressure is December (1022.1mbar).
The month with the lowest atmospheric pressure is July (1006.8mbar).
Average wind speed in December
Siarak, Iran
- Average wind speed in December: 6.8km/h
The windiest month (with the highest average wind speed) is July (9.3km/h).
The calmest month (with the lowest average wind speed) is November (6.7km/h).
Average humidity in December
Siarak, Iran
- Average humidity in December: 68%
The month with the highest relative humidity is January (76%).
The months with the lowest relative humidity are July and August (35%).
Average rainfall in December
Siarak, Iran
- Average rainfall in December: 23mm
The wettest month (with the highest rainfall) is March (33mm).
The driest months (with the least rainfall) are August and September (3mm).
Average rainfall days in December
Siarak, Iran
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is April (9.8 days).
The month with the least rainy days is August (1.6 days).
Average snowfall in December
Siarak, Iran
- Average snowfall in December: 91mm
The month with the highest snowfall is February (131mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Siarak, Iran
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is January (6.2 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
Siarak, Iran
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 42min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 6h and 42min).
Average sunshine days in December
Siarak, Iran
- Average sunshine days in December: 22.9 days
The month with the most sunshine days is August (28.1 days).
The month with the least sunshine days is April (18 days).
Average UV index in December
Siarak, Iran
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Siarak, Iran
- Average cloud cover in December: 24
The months with the most cloud cover are January, February and March (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 5).
Average visibility in December
Siarak, Iran
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
