Visit the Garni Temple
The temple is unique in the former Soviet Union and built on a breathtaking location along the Azat river and the Gegham mountains.
September in Arrinj averages 25°C (77°F) during the day and 12°C (54°F) at night. With just 16 mm (0.6 in) of rainfall on average, it doesn't get much drier than this.
So this is a great month to visit if you prefer dry days with pleasant temperatures.
Pick a month to see the average temperature, rainfall and sunshine in Arrinj - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Arrinj typically drop from around 32°C (90°F) at the start of September to approximately 26°C (79°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 17°C (63°F).
Browse day-by-day weather records for Arrinj spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in Arrinj between 1998 and 2025, these are the recorded extremes during September.
Find out more about the weather in Armenia and which places have the best travel conditions in this month. See all of Armenia in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Arrinj climate overview or explore weather in Armenia.
Where to go in September - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
Visit the Garni Temple
The temple is unique in the former Soviet Union and built on a breathtaking location along the Azat river and the Gegham mountains.
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