May Weather in Karaj, Iran

Last updated: August 23, 2025

In May, the average temperature in Karaj, Iran is a pleasant 20°C (68°F). However, temperatures can vary, with a minimum of 7°C (45°F) and soaring up to a maximum of 34°C (93°F). Visitors should prepare for some rain, as the region receives an average precipitation of 24 mm (1.0 in) over about 5 days. With an average humidity level of 64%, it's wise to consider the weather when planning your activities!

May Temperature in Karaj

In May in Karaj, the average temperature is 20°C (68°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop as low as 7°C (45°F). Be prepared for a range of temperatures to ensure a comfortable and enjoyable travel experience.

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

The chart illustrates May 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, May typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (93°F) and lows dropping to around 7°C (45°F).

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

May Precipitation in Karaj

In Karaj in May, the precipitation amount is 24 mm (1.0 in) spread over the course of 5 days.

May Precipitation Trends in Karaj

The chart displays monthly precipitation patterns in Karaj, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Karaj, May typically receives around 24 mm (1.0 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Karaj

In Karaj in May humidity is 64%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making it a perfect time for travelers to explore, though they might want to stay hydrated and take breaks in the shade to fully enjoy the experience.

May Average Humidity in Karaj

This chart illustrates the average monthly humidity levels in Karaj, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Karaj is approximately 64%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Karaj

In Karaj in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Karaj.

Maximum UV Index Levels in Karaj for May

The chart shows the monthly maximum UV Index (UVI) for Karaj in May, 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 May, the maximum UV index in Karaj typically reaches 12, which falls under the extreme exposure category.

Data source: Karaj May 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 May 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 May’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 May’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