December weather forecastDeryas, Iran
December
Weather in December
The first month of the winter, December, is also an icy month in Deryas, Iran, with an average temperature varying between 5.7°C (42.3°F) and -1.6°C (29.1°F).Temperature
During Deryas's transition into December, the average high-temperature lessens, moving from a cool 11.1°C (52°F) in November to a cold 5.7°C (42.3°F). During the month of December, the nighttime temperature falls to an average of -1.6°C (29.1°F).Humidity
The average relative humidity in December is 68%.Rainfall
In Deryas, during December, the rain falls for 9.1 days and regularly aggregates up to 41mm (1.61") of precipitation. In Deryas, during the entire year, the rain falls for 74.6 days and collects up to 236mm (9.29") of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Deryas, during December, snow falls for 4.6 days and regularly aggregates up to 125mm (4.92") of snow. Throughout the year, there are 21.7 snowfall days, and 507mm (19.96") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 07:21 and sunset at 17:10. On the last day of the month, sunrise is at 07:39 and sunset at 17:20 +0330.
Sunshine
The months with the least sunshine are January and December, with an average of 6.6h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Deryas, Iran
- Average high temperature in December: 5.7°C
The warmest month (with the highest average high temperature) is July (33.3°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in December: -1.6°C
The month with the highest average low temperature is July (18.3°C).
The coldest month (with the lowest average low temperature) is January (-4.1°C).
Average pressure in December
Deryas, Iran
- Average pressure in December: 1022mbar
The month with the highest atmospheric pressure is December (1022mbar).
The month with the lowest atmospheric pressure is July (1006.2mbar).
Average wind speed in December
Deryas, Iran
- Average wind speed in December: 7.9km/h
The windiest month (with the highest average wind speed) is May (10.9km/h).
The calmest month (with the lowest average wind speed) is November (7.3km/h).
Average humidity in December
Deryas, Iran
- Average humidity in December: 68%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is July (28%).
Average rainfall in December
Deryas, Iran
- Average rainfall in December: 41mm
The wettest month (with the highest rainfall) is March (47mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in December
Deryas, Iran
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is March (13.6 days).
The month with the least rainy days is August (0.2 days).
Average snowfall in December
Deryas, Iran
- Average snowfall in December: 125mm
The month with the highest snowfall is January (169mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Deryas, Iran
- Average snowfall days in December: 4.6 days
The month with the highest number of snowfall days is January (7.7 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
Deryas, Iran
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 36min
The month with the most sunshine is August (Average sunshine: 12h and 18min).
The months with the least sunshine are January and December (Average sunshine: 6h and 36min).
Average sunshine days in December
Deryas, Iran
- Average sunshine days in December: 19.3 days
The month with the most sunshine days is August (30.6 days).
The month with the least sunshine days is February (15 days).
Average UV index in December
Deryas, 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
Deryas, Iran
- Average cloud cover in December: 27
The month with the most cloud cover is January (Cloud cover 30).
The months with the least cloud cover are June, August and September (Cloud cover 4).
Average visibility in December
Deryas, 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).
