Weather in Yerevan in September 2025
Average weather
Average temperature in Yerevan in September
The temperature in September is +27°C on average, with a range between a maximum of +34°C during the day and a minimum of +10°C at night.
The average maximum temperature goes down 37% by the end of the month, compared with the beginning of the month, from +34°C to +25°C.
Is Yerevan warm or cold in September?
Yerevan is typically warm in September.
Maximum temperatures go down compared to the previous month from +31°C to +27°C. The minimum temperature also goes down from +17°C to +12°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 Yerevan:
Climate in Yerevan in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +31°C | +27°C | +19°C | ||||
| Min. temperature | ||||||
| +9°C | +2°C | -3°C | ||||
| Max. temperature | ||||||
| +40°C | +37°C | +29°C | ||||
| Rainfall | ||||||
| 24 mm | 22 mm | 46 mm | ||||
| Wind | ||||||
| 2 m/s | 1 m/s | 0 m/s | ||||
| Humidity | ||||||
| 44% | 48% | 62% | ||||
| Air pressure | ||||||
| 1009 HPa | 1012 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 12 | 15 | 12 | ||||
| Cloudy days | ||||||
| 2 | 2 | 5 | ||||
| Rainy days | ||||||
| 11 | 9 | 12 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as good as in August. It’s getting colder in September. From +31°C in the day, the average maximum temperature lowers to +27°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 24 mm to 22 mm. Humidity rises from 44% to 48%. Winds are calmer in comparison to August, going down from 2 m/s to 1 m/s on average. The good news is there are likely to be more sunny days in September, from 12 to 15.
October brings much the same weather, it remains good.
Wind
The average wind speed is 1 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Yerevan is gradually increasing during September, going from 1 m/s to 1 m/s over the course of the month.
Rain
How was the weather last September in Yerevan?
Climate Change over Years
The climate in Yerevan in September has not changed much over the last 43 years.
The average temperature was the lowest in 1992 (+13°C) and the highest in 2018 (+21°C). The driest year was 2023 with only 274 mm of rainfall, and the wettest year was 1988 with 769 mm.
FAQ
Is September a good time to visit Yerevan?
Can you sunbathe in Yerevan in September?
Is Yerevan rainy in September?
Is it sunny in Yerevan in September?
Monthly weather in Yerevan
Source of the data
For this page, we’ve looked at the typical weather in Yerevan, 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.