September weather forecast
Altai, Mongolia

Altai in September witnesses the onset of autumn with a significant decrease in temperature. After the balminess of summer, the first autumnal whispers emerge with temperatures reverting to a high of 14°C (57.2°F). As September progresses, the daylight hours decrease, signifying the retreat of summer and the onset of cooler weather. As autumn sets in, the rainfall levels decline significantly, introducing a more arid climate. However, the residual warmth of summer still lingers, making this month a unique blend of two seasons.

Temperature

The average high-temperature in Altai decreases in September, shifting from an enjoyable 19°C (66.2°F) in August to a moderate 14°C (57.2°F). Marked by a significant drop from the daytime highs, Altai's average low-temperature in September stands at an icy 1°C (33.8°F).

Rainfall

In Altai, in September, during 7 rainfall days, 16mm (0.63") of precipitation is typically accumulated. Throughout the year, there are 74 rainfall days, and 153mm (6.02") of precipitation is accumulated.

Daylight

In Altai, the average length of the day in September is 12h and 34min.
On the first day of September in Altai, sunrise is at 06:55 and sunset at 20:14. On the last day of the month, sunrise is at 07:32 and sunset at 19:17 +08.

Sunshine

The average sunshine in September in Altai is 9h.

UV index

In September, the average daily maximum UV index in Altai is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 5 during September translates into these guidelines:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.