Best Time to Visit Semnan, Semnan, Iran
Semnan is at its sunniest and driest in April–October.
The best time to visit Semnan for sunny, dry weather is April–October — 7 months of the year fit our sunny profiles at this specific location. The drier stretch runs through April–October; the wetter half falls in November–March. At the city itself, monthly average temperatures range from 3.9°C / 39°F in January to 31.6°C / 88.9°F in July, with rainfall from 4 mm / 0.2 in (July) to 33 mm / 1.3 in (January). These are point-value climate normals sampled at Semnan, Semnan, Iran's coordinates — usually more actionable for travellers than the country-wide average. Semnan's climate is broadly seasonal. The full month-by-month table below lets you match your travel window against our five weather profiles.
Recommended months
| Month | Temp | Rain | Feels like |
|---|---|---|---|
| April | 18.2°C64.8°F | 21 mm0.8″ | Sunny & Mild |
| May | 23.3°C73.9°F | 18 mm0.7″ | Sunny & Warm |
| June | 29°C84.2°F | 7 mm0.3″ | Sunny & Hot |
| July | 31.6°C88.9°F | 4 mm0.2″ | Sunny & Hot |
| August | 30.4°C86.7°F | 5 mm0.2″ | Sunny & Hot |
| September | 26.2°C79.2°F | 7 mm0.3″ | Sunny & Hot |
| October | 19.1°C66.4°F | 22 mm0.9″ | Sunny & Mild |
Frequently asked questions
When is the best time to visit Semnan?
The best time to visit Semnan for sunny, dry weather is April, May, June, July, August, September, October. At the city itself, the warmest month is July averaging 31.6°C / 88.9°F, and the driest is July with about 4 mm / 0.2 in of rain. These are point-value climate normals sampled at Semnan's coordinates.
When is the rainy season in Semnan?
The rainy season at Semnan, Semnan runs through November–March, when monthly rainfall exceeds the annual median of about 22 mm / 0.9 in. The wettest single month is January (33 mm / 1.3 in).
What is the driest month in Semnan?
The driest month in Semnan is July, averaging about 4 mm / 0.2 in of rainfall. Temperature that month averages 31.6°C / 88.9°F.
What months should I avoid visiting Semnan?
The least comfortable months for travel to Semnan — based on point-value climate at the city — are January, February, March, December. These are the wettest or coolest months at this location. Rainfall peaks at 33 mm / 1.3 in in January, and the coldest month averages 3.9°C / 39°F.
Is Semnan climate different from Iran overall?
Yes, usually. Our Semnan figures are point-value climate normals sampled at the city itself, while our Iran figures are area-weighted averages across the whole country. The two can diverge substantially in geographically diverse or elevation-varied countries. The month-by-month table below reflects Semnan specifically — usually the more actionable data for a traveller planning to spend time in the city.