January Weather in Karaj, Iran

Last updated: August 23, 2025

In Karaj, Iran, the average temperature in January hovers around 1°C (35°F). Experience the range of temperatures, dipping as low as -14°C (7°F) and reaching a maximum of 14°C (58°F). During this month, expect 34 mm (1.3 in) of precipitation over approximately 5 days, with an average humidity level of 70%.

January Temperature in Karaj

In January in Karaj, the average temperature is 1°C (35°F). Maximums can reach 14°C (58°F), and minimums can drop as low as -14°C (7°F). It's advisable to pack warm clothing and be prepared for chilly conditions while exploring this destination.

January Weather in Karaj: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Karaj, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karaj, January typically has an average temperature of 1°C (35°F), with highs reaching up to 14°C (58°F) and lows dropping to around -14°C (7°F).

Data source: Temperature data for Karaj generated using information from the Copernicus Climate Change Service.

January Precipitation in Karaj

In Karaj in January, the precipitation amount is 34 mm (1.3 in) over the course of 5 days.

January Precipitation Trends in Karaj

The chart displays monthly precipitation patterns in Karaj, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Karaj, January typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 5 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Karaj

In Karaj in January humidity is 70%. With an average temperature of 1°C (35°F), this humidity feels like a thick, icy blanket wrapping around you, making it feel even colder and less inviting for traveling, as each breath brings a chill that pierces through your clothing and leaves you yearning for warmth.

January Average Humidity in Karaj

This chart illustrates the average monthly humidity levels in Karaj, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Karaj is approximately 70%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Karaj

In Karaj in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Karaj for better planning.

Maximum UV Index Levels in Karaj for January

The chart shows the monthly maximum UV Index (UVI) for Karaj in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Karaj typically reaches 4, which falls under the moderate exposure category.

Data source: Karaj January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Karaj Compares to Other Months

Weather in Karaj varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Karaj, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Karaj, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (35°F)	34 mm (1.3 inches)	70%	moderate
February Weather	3°C (38°F)	56 mm (2.2 inches)	66%	moderate
March Weather	8°C (47°F)	49 mm (1.9 inches)	68%	very high
April Weather	14°C (57°F)	54 mm (2.1 inches)	62%	very high
May Weather	20°C (68°F)	24 mm (1.0 inches)	64%	extreme
June Weather	27°C (80°F)	4 mm (0.1 inches)	62%	extreme
July Weather	29°C (85°F)	2 mm (0.1 inches)	52%	extreme
August Weather	28°C (82°F)	0 mm (0.0 inches)	40%	very high
September Weather	24°C (75°F)	1 mm (0.0 inches)	45%	very high
October Weather	16°C (61°F)	20 mm (0.8 inches)	61%	high
November Weather	8°C (47°F)	39 mm (1.5 inches)	72%	moderate
December Weather	4°C (39°F)	33 mm (1.3 inches)	70%	moderate