What September feels like in Isfahan
For Isfahan, September is early autumn on the calendar. The midday hours are hot; shade and water matter on long walks. The day–night swing is wide (about 15.6°C (28.1°F)): nights stay mild, so mornings and evenings feel very different from midday. The heat is dry rather than muggy, so drink more than you think you need.
Rain in Isfahan in September
Dry weather dominates, and an umbrella can mostly stay packed. It is among the three driest months of the year.
Daylight and sunshine in September
On 15 September the sun rises at about 5:46 am and sets around 6:11 pm local time, giving 12 h 25 min of daylight. Compared with mid-August, the day has lost 58 min. Measured sunshine covers about 91% of the daylight — skies are mostly clear.
How September compares to the rest of the year
September is the 4th warmest month of the year in Isfahan. Compared with August, afternoons are 3.7°C (6.7°F) cooler, with about the same rain. October is cooler again. By October, typical highs are 25°C (77°F).
Who September suits
- Sightseeing: a good fit — comfortable enough to explore on foot all day.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
Tips for visiting Isfahan in September
Versatile Layers
Mornings and evenings are cooler than midday, so dress in layers.
Sun Protection
Sunscreen, a hat and sunglasses; light breathable clothes.
Quick questions
How warm is Isfahan in September?
Expect around 31.8°C (89.2°F) in the afternoon and 16.2°C (61.2°F) at night, which most visitors would call hot.
Does it rain a lot in Isfahan in September?
Almost never — September is essentially rainless, with no rainy days in a typical year.
What should I wear in Isfahan in September?
Based on the averages: versatile layers and sun protection. Add a layer for after dark.
Is September or October better for visiting Isfahan?
October scores better on our climate ranking (#1 of 12 vs #4), rated Great against Great. October is cooler and has more rainy days.