The climate in Yerevan during September can be summarized as warm and dry.
September is in the fall / autumn in Yerevan and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (78°F), whilst at night 11°C (51°F) is normal.
| Daytime temperature | 25.8°C 78.4°F | 
|---|---|
| Nightly temperature | 10.6°C 51.1°F | 
| Average temperature | 18.2°C 64.8°F | 
| Daily sunshine | 10 hrs | 
| Avg rainfall | 19 mm 0.7 ins | 
| Rainy days | 5 days | 
| Sea temperature | 24.2°C 75.6°F | 
| Humidity | 51% | 
| Windspeed | 6.1kph 4 mph | 
On average September is the 3rd driest month of the year in Yerevan with around 19mm 0.7 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 10 hours of sunshine per day.
				
						
						The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Yerevan in September 2025.
Best places to visit in September
| Hottest month: | July | 30°C 86°F | 
|---|---|---|
| Driest month: | January | 16mm 0.6ins | 
| Sunniest month: | August | 11.4hrs | 
| Coldest month: | January | -0.9°C 30.4°F | 
| Wettest month: | May | 65mm 2.6ins |