December Weather forecast - Winter forecast

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

A golden illusion of the front view of the Zaid Mosque in Tehran, Iran

Weather in December

The first month of the winter, December, is also a frosty month in Tehran, Iran, with an average temperature varying between -0.1°C (31.8°F) and 7.6°C (45.7°F).

Temperature

In Tehran, Iran, the average high-temperature in December marginally drops from a fresh 11.7°C (53.1°F) in November to a chilly 7.6°C (45.7°F). The average low-temperature, in Tehran, is -0.1°C (31.8°F).

Humidity

In December, the average relative humidity is 48%.

Rainfall

In Tehran, in December, during 7.7 rainfall days, 19mm (0.75") of precipitation is typically accumulated. In Tehran, during the entire year, the rain falls for 93.2 days and collects up to 244mm (9.61") of precipitation.

Snowfall

January through March, November and December are months with snowfall in Tehran. In Tehran, during December, snow falls for 0.9 days and regularly aggregates up to 5mm (0.2") of snow. Throughout the year, in Tehran, there are 8.5 snowfall days, and 80mm (3.15") of snow is accumulated.

Daylight

With an average of 9h and 47min of daylight, December has the shortest days of the year.
On the first day of December in Tehran, Iran, sunrise is at 06:55 and sunset at 16:51. On the last day of the month, sunrise is at 07:13 and sunset at 17:00 +0330.

Sunshine

In December, the average sunshine is 7.2h.

UV index

January 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 low health risk from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

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FAQ

What is the temperature in December in Tehran?

In December, in Tehran, Iran, the average high-temperature is 7.6°C (45.7°F), and the average low-temperature is -0.1°C (31.8°F).

What is the average humidity in December in Tehran?

The average relative humidity in December in Tehran is 48%.

How much does it rain in Tehran in December?

In December, the rain falls for 7.7 days. Throughout December, 19mm (0.75") of precipitation is accumulated.

How many days does it snow in December in Tehran?

In December, in Tehran, it is snowing for 0.9 days. Throughout December, 5mm (0.2") of snow is accumulated.

What is the month with the shortest days in Tehran?

The month with the shortest days in Tehran is December, with an average of 9h and 47min of daylight.

What is the average length of the day in December in Tehran?

The average day length in December in Tehran is 9h and 47min.

When is the sunrise / sunset in December in Tehran?

On the first day of December, sunrise is at 06:55 and sunset at 16:51. On the last day of the month, sunrise is at 07:13 and sunset at 17:00 +0330.

How many hours of sunshine does Tehran have in December?

The average sunshine duration in December is 7.2h.

What is the month with the lowest UV index in Tehran?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Tehran.

How high is the UV index in December in Tehran?

In December, the average daily maximum UV index in Tehran, Iran, is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

11.7°C 53.1°F

7.6°C 45.7°F

5.8°C 42.4°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.2km/h 3.9mph

6.1km/h 3.8mph

7.3km/h 4.5mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

16.3

17.9

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Tehran, Iran

Average high temperature in December: 7.6°C

The warmest month (with the highest average high temperature) is July (33.8°C).
The month with the lowest average high temperature is January (5.8°C).

Average low temperature in December: -0.1°C

The month with the highest average low temperature is July (24.3°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).

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Average pressure in December
Tehran, Iran

Average pressure in December: 1021.6mbar

The month with the highest atmospheric pressure is December (1021.6mbar).
The month with the lowest atmospheric pressure is July (1007.1mbar).

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Average wind speed in December
Tehran, Iran

Average wind speed in December: 5.5km/h

The windiest month (with the highest average wind speed) is June (9.4km/h).
The calmest months (with the lowest average wind speed) are November and December (5.5km/h).

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Average humidity in December
Tehran, Iran

Average humidity in December: 48%

The month with the highest relative humidity is February (52%).
The month with the lowest relative humidity is July (19%).

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Average rainfall in December
Tehran, Iran

Average rainfall in December: 19mm

The wettest month (with the highest rainfall) is April (38mm).
The driest month (with the least rainfall) is September (6mm).

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Average rainfall days in December
Tehran, Iran

Average rainfall days in December: 7.7 days

The month with the highest number of rainy days is April (13.5 days).
The month with the least rainy days is September (2.9 days).

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Average snowfall in December
Tehran, Iran

Average snowfall in December: 5mm

The month with the highest snowfall is January (27mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in December
Tehran, Iran

Average snowfall days in December: 0.9 days

The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Tehran, Iran

Average daylight in December: 9h and 47min

The month with the longest days is June (Average daylight: 14h and 32min).
The month with the shortest days is December (Average daylight: 9h and 47min).

Average sunshine in December: 7h and 12min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is February (Average sunshine: 7h and 0min).

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Average sunshine days in December
Tehran, Iran

Average sunshine days in December: 19 days

The months with the most sunshine days are July and September (22.8 days).
The month with the least sunshine days is April (9.5 days).

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Average UV index in December
Tehran, Iran

Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in December
Tehran, Iran

Average cloud cover in December: 17

The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is September (Cloud cover 4).

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Average visibility in December
Tehran, 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).

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December weather forecast
Tehran, Iran

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