Karaj Weather in December
Karaj in December sees low daytime temperatures of 6°C (43°F) and nighttime lows of -3°C (27°F). Moderate snow/rainfall is typical, with around 44 mm (1.7 in) for the month.
Rainfall in Karaj in December
The climate data from previous years indicates about 9 days of snow/rain, averaging 44 mm (1.7 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Karaj in December
Karaj in December gets highs of 6°C (43°F) during the day and drops to -3°C (27°F) at night. The winter season takes place during December. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With lows of -3°C (27°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated.
Sunshine in Karaj in December
The area enjoys a moderate level of sunlight, with around 154 hours. It's a good balance between sunny and cloudy days.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, September and October typically offer the best weather for Karaj.
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 Karaj's climate page.
Karaj Temperature in December
Min Temperature
-3°C (27°F)
Max Temperature
6°C (43°F)
Chance of Rain
31%
Precipitation
44 mm (1.7 in)
Rainy days
9 days
Humidity
66%
Sunshine
154 hours
Percentage Sunshine
Daily Historical Temperatures
41-year average (1976-2025)
Based on our historical records, temperatures in Karaj typically stay consistent throughout December, with daily highs averaging around 6°C (43°F). Nights are cold, with lows typically ranging from 0°C (32°F) to 5°C (41°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 Karaj in December
Browse day-by-day weather records for Karaj spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Karaj historical weather extremes in December
Based on weather observations in Karaj between 2002 and 2025, these are the recorded extremes during December.
- On December 4, 2005, temperatures climbed to 20°C (68°F), marking the warmest December day on record.
- The coldest December day was on December 12, 2003, with a maximum of 0°C (32°F).
- The coldest night in December in Karaj was on December 31, 2006, with a minimum of -14°C (7°F).
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
pleasant
tolerable
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What to Wear in Karaj in December
We recommend to layer up for chilly conditions in Karaj in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. Rain is likely on several days, so bring a good rain jacket. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Karaj 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 Karaj's climate page.
Temperature Rainfall Sunshine Humidity
See the full Karaj climate overview or explore weather in Iran.
