September Weather in Ostrovnoy, Russian Federation

Last updated: August 27, 2025

In September, the average temperature in Ostrovnoy, Russian Federation is a cool 8°C (46°F), with a minimum dipping down to -1°C (30°F) and a maximum reaching 18°C (65°F). Expect about 78 mm (3.1 in) of precipitation spread over 13 days, contributing to a notably high average humidity of 92%. Be prepared for chilly and damp conditions during your visit!

September Temperature in Ostrovnoy

In September in Ostrovnoy, the average temperature is 8°C (46°F). Maximums can reach 18°C (65°F), and minimums can drop as low as -1°C (30°F). This makes it a perfect time for travelers to enjoy the crisp air while exploring the local attractions, so be sure to pack accordingly!

September Weather in Ostrovnoy: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ostrovnoy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ostrovnoy, September typically has an average temperature of 8°C (46°F), with highs reaching up to 18°C (65°F) and lows dropping to around -1°C (30°F).

Data source: Temperature data for Ostrovnoy generated using information from the Copernicus Climate Change Service.

September Precipitation in Ostrovnoy

In Ostrovnoy in September, the precipitation amount is 78 mm (3.1 in) spread over 13 days.

September Precipitation Trends in Ostrovnoy

The chart displays monthly precipitation patterns in Ostrovnoy, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Ostrovnoy, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Ostrovnoy

In Ostrovnoy in September, humidity is 92%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that settles deep into your bones, making outdoor adventures uncomfortable and necessitating extra layers to stay warm while you explore.

September Average Humidity in Ostrovnoy

This chart illustrates the average monthly humidity levels in Ostrovnoy, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Ostrovnoy is approximately 92%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ostrovnoy

In Ostrovnoy in September, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Ostrovnoy, you can check the information here.

Maximum UV Index Levels in Ostrovnoy for September

The chart shows the monthly maximum UV Index (UVI) for Ostrovnoy in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Ostrovnoy typically reaches 3, which falls under the moderate exposure category.

Data source: Ostrovnoy September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Ostrovnoy Compares to Other Months

Weather in Ostrovnoy varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ostrovnoy, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Ostrovnoy, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	42 mm (1.7 inches)	99%	low
February Weather	-8°C (17°F)	45 mm (1.8 inches)	99%	low
March Weather	-6°C (22°F)	43 mm (1.7 inches)	94%	low
April Weather	-2°C (29°F)	47 mm (1.8 inches)	90%	moderate
May Weather	2°C (36°F)	65 mm (2.6 inches)	85%	moderate
June Weather	7°C (45°F)	75 mm (2.9 inches)	85%	moderate
July Weather	12°C (53°F)	57 mm (2.2 inches)	86%	moderate
August Weather	11°C (51°F)	84 mm (3.3 inches)	90%	moderate
September Weather	8°C (46°F)	78 mm (3.1 inches)	92%	moderate
October Weather	2°C (36°F)	76 mm (3.0 inches)	95%	low
November Weather	-2°C (29°F)	64 mm (2.5 inches)	97%	low
December Weather	-5°C (22°F)	43 mm (1.7 inches)	100%	low