Tehran Weather in December
December in Tehran averages 7°C (45°F) during the day and -3°C (27°F) at night. Around 45 mm (1.8 in) of snow/rainfall is typical for this time of year.
Rainfall in Tehran in December
Typically, about 9 days will experience snow/rainfall, with an average of 45 mm (1.8 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Tehran in December
Daytime highs in Tehran in December reach 7°C (45°F), with nights around -3°C (27°F). December is known for being in the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. At -3°C (27°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating.
Sunshine in Tehran in December
The area experiences a moderate amount of sunshine, with approximately 171 hours of sunlight expected. This means a decent mix of sun and overcast.
Wind Speed in Tehran in December
Average wind conditions reach 1 m/s (2 knots) in December. This creates generally peaceful weather with subtle air movement. Remember this is an average: some days are windless while others have noticeable or very gentle breezes.December in Tehran has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iran, check out our Tehran's climate page.
Tehran Temperature in December
Min Temperature
-3°C (27°F)
Max Temperature
7°C (45°F)
Chance of Rain
29%
Precipitation
45 mm (1.8 in)
Rainy days
9 days
Humidity
61% *
Windspeed
1 m/s (2 knots) *
Sunshine
171 hours *
Percentage Sunshine
*
Daily Historical Temperatures
41-year average (1976-2025)
Based on our historical records, temperatures in Tehran typically stay consistent throughout December, with daily highs averaging around 7°C (45°F). Nights are cold, with lows typically ranging from 2°C (36°F) to 6°C (43°F).
Average temperatures in December
Daily Historical Precipitation
41-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Tehran in December
Browse day-by-day weather records for Tehran spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Tehran historical weather extremes in December
Our historical data for Tehran spans 2002 to 2025, revealing these weather extremes.
- Tehran recorded its highest December temperature of 20°C (68°F) on December 4, 2005.
- On December 12, 2003, Tehran saw its coldest December day with temperatures maxing out at 0°C (32°F).
- Nighttime temperatures dropped to -15°C (5°F) on December 31, 2006, marking the coldest December night on record.
Best Places in Iran in December
Find out more about the weather in Iran and which places have the best travel conditions in this month. See all of Iran in December →
perfect weather
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tolerable
unpleasant
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What to Wear in Tehran in December
Dress warmly and in layers for your trip to Tehran in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Wet weather is likely, so pack waterproof gear for multiple rainy days. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Tehran in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iran, check out our Tehran's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Tehran climate overview or explore weather in Iran.
