September weather forecastYerevan, Armenia
September
Weather in September
September brings a welcome reprieve from the sweltering heat of August in Yerevan. The gradual decrease in temperature and shorter daylight hours indicate the onset of autumn. Fewer sunlight hours do not deter outdoor activities, as cooler days make for pleasant exploration of Yerevan's alleys and attractions. The mild weather and lingering summer vibes make September an appealing month for travel and leisure in this historic city.Temperature
The onset of September brings a small shift in high-temperatures, falling from a tropical 33.4°C (92.1°F) in August to a warm 28.7°C (83.7°F). Despite a significant deviation from daily highs, September sees an average nighttime temperature of 13.4°C (56.1°F).Heat index
The heat index value for September is appraised at 29°C (84.2°F). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In Yerevan, the average relative humidity in September is 51%.Rainfall
September is the month with the least rainfall in Yerevan. Rain falls for 4 days and accumulates 8mm (0.31") of precipitation.Snowfall
In Yerevan, snow does not fall in May through September.Daylight
The average length of the day in September in Yerevan is 12h and 28min.On the first day of September in Yerevan, sunrise is at 06:29 and sunset at 19:33. On the last day of the month, sunrise is at 06:57 and sunset at 18:45 +04.
Sunshine
In September, the average sunshine is 9.3h.UV index
In September, the average daily maximum UV index in Yerevan is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 7 during September translates into the following directions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Jan 25, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
An average high-temperature, in September, in Yerevan, is 28.7°C (83.7°F) and the average low-temperature is 13.4°C (56.1°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is appraised at 29°C (84.2°F).
In Yerevan, Armenia, the average relative humidity in September is 51%.
The month with the least rainfall in Yerevan is September, when the rain falls for 4 days and typically collects 8mm (0.31") of precipitation.
In September, the rain falls for 4 days. Throughout September, 8mm (0.31") of precipitation is accumulated.
In Yerevan, Armenia, snow does not fall in May through September.
In Yerevan, in September, it doesn't snow. In October, it regularly snows.
In September, the average day length is 12h and 28min.
In September, on the first day of the month, sunrise is at 06:29 and sunset at 19:33. On the last day of the month, in Yerevan, Armenia, sunrise is at 06:57 and sunset at 18:45 +04.
In Yerevan, Armenia, the average sunshine duration in September is 9.3h.
In September, the average daily maximum UV index in Yerevan is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average temperature in September
Yerevan, Armenia
- Average high temperature in September: 28.7°C
The warmest month (with the highest average high temperature) is July (33.7°C).
The month with the lowest average high temperature is January (1.2°C).
- Average low temperature in September: 13.4°C
The month with the highest average low temperature is July (19.4°C).
The coldest month (with the lowest average low temperature) is January (-7.5°C).
Average humidity in September
Yerevan, Armenia
- Average humidity in September: 51%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (47%).
Average rainfall in September
Yerevan, Armenia
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is April (51mm).
The driest month (with the least rainfall) is September (8mm).
Average rainfall days in September
Yerevan, Armenia
- Average rainfall days in September: 4 days
The months with the highest number of rainy days are April and May (12 days).
The month with the least rainy days is January (2 days).
Average snowfall days in September
Yerevan, Armenia
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Yerevan, Armenia
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 0min).
Average UV index in September
Yerevan, Armenia
- Average UV index in September: 7
The month with the highest UV index is July (UV index 11).
The months with the lowest UV index are January and December (UV index 2).
