October Weather in Semnan, Iran

Last updated: August 23, 2025

In Semnan, Iran, the average temperature in October hovers around 17°C (63°F), with a range that can dip to a chilly 4°C (40°F) and soar up to a warm 30°C (86°F). Visitors can expect 8 mm (0.3 in) of precipitation over approximately 2 days, coupled with an average humidity of 51%. Whether you're enjoying the sun or bracing for a brief shower, October offers a pleasant climate for exploration!

October Temperature in Semnan

In October in Semnan, the average temperature is 17°C (63°F). Maximums can reach 30°C (86°F) and minimums can be as low as 4°C (40°F). This makes it an ideal time for travelers to enjoy a range of outdoor activities while still being prepared for cooler evenings.

October Weather in Semnan: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Semnan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Semnan, October typically has an average temperature of 17°C (63°F), with highs reaching up to 30°C (86°F) and lows dropping to around 4°C (40°F).

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

October Precipitation in Semnan

In Semnan in October, the precipitation amount is 8 mm (0.3 in) over the course of 2 days.

October Precipitation Trends in Semnan

The chart displays monthly precipitation patterns in Semnan, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Semnan, October typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 2 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Semnan

In Semnan in October humidity is 51%. With an average temperature of 17°C (63°F), this humidity feels like a pleasant and refreshing embrace, making it ideal for exploring outdoor attractions and enjoying leisurely strolls without feeling overly sticky or uncomfortable.

October Average Humidity in Semnan

This chart illustrates the average monthly humidity levels in Semnan, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Semnan is approximately 51%, offering insight into how humid the weather typically is during this month.

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

October UV Index in Semnan

In Semnan in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Semnan.

Maximum UV Index Levels in Semnan for October

The chart shows the monthly maximum UV Index (UVI) for Semnan in October, 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 October, the maximum UV index in Semnan typically reaches 7, which falls under the high exposure category.

Data source: Semnan October 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 October Weather in Semnan Compares to Other Months

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

This table compares monthly weather conditions in Semnan, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	11 mm (0.4 inches)	63%	moderate
February Weather	6°C (44°F)	21 mm (0.8 inches)	62%	moderate
March Weather	12°C (53°F)	21 mm (0.8 inches)	63%	very high
April Weather	17°C (63°F)	17 mm (0.7 inches)	57%	very high
May Weather	22°C (72°F)	12 mm (0.5 inches)	57%	extreme
June Weather	29°C (84°F)	1 mm (0.0 inches)	47%	extreme
July Weather	31°C (88°F)	0 mm (0.0 inches)	34%	extreme
August Weather	29°C (84°F)	1 mm (0.0 inches)	28%	extreme
September Weather	25°C (77°F)	2 mm (0.1 inches)	33%	very high
October Weather	17°C (63°F)	8 mm (0.3 inches)	51%	high
November Weather	10°C (50°F)	19 mm (0.8 inches)	66%	moderate
December Weather	6°C (43°F)	11 mm (0.4 inches)	65%	moderate