The temperature in September is +33°C on average, with a range between a maximum of +35°C during the day and a minimum of +16°C at night.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +34°C to +34°C.
Tehran is typically warm in September.
Maximum temperatures go down compared to the previous month from +34°C to +30°C. The minimum temperature also goes down from +23°C to +18°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Tehran:
August | September | October | ||||
---|---|---|---|---|---|---|
Avg. temperature | ||||||
+34°C | +30°C | +22°C | ||||
Min. temperature | ||||||
+13°C | +7°C | -1°C | ||||
Max. temperature | ||||||
+41°C | +37°C | +32°C | ||||
Rainfall | ||||||
1 mm | 1 mm | 15 mm | ||||
Wind | ||||||
1 m/s | 1 m/s | 1 m/s | ||||
Humidity | ||||||
24% | 26% | 37% | ||||
Air pressure | ||||||
1008 HPa | 1012 HPa | 1017 HPa | ||||
Sunny days | ||||||
28 | 28 | 20 | ||||
Cloudy days | ||||||
3 | 2 | 9 | ||||
Rainy days | ||||||
0 | 0 | 2 | ||||
Snowy days | ||||||
0 | 0 | 0 |
September weather is still as good as in August. It’s getting colder in September. From +34°C in the day, the average maximum temperature lowers to +30°C. The rainfall amount in September stays the same as in the previous month with a 1 mm of total precipitation. Humidity rises from 24% to 26%. The average wind speed doesn’t change much during September, staying around 1 m/s. The amount of sunny days stay about the same, averaging 28 sunny days during the month.
October brings much the same weather, it remains good.
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Tehran is gradually decreasing during September, going from 3 m/s to 2 m/s over the course of the month.
The climate in Tehran in September has not changed much over the last 43 years.
The average temperature was the lowest in 1994 (+29°C) and the highest in 2021 (+34°C). The driest year was 2012 with only 0 mm of rainfall, and the wettest year was 2022 with 0 mm.
For this page, we’ve looked at the typical weather in Tehran, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.