September Weather in Osa, Russian Federation

Last updated: August 27, 2025

In September, the average temperature in Osa, Russian Federation hovers around 10°C (50°F). Expect a pleasant range with minimums dipping to -1°C (30°F) and maximums reaching up to 27°C (81°F). Be prepared for some rain, as the area receives an average precipitation of 63 mm (2.5 in) over 12 days. With an average humidity of 89%, the air can feel quite moist, adding to the locale's charm.

September Temperature in Osa

In September in Osa, the average temperature is 10°C (50°F). Maximums can reach 27°C (81°F), while minimums can drop to as low as -1°C (30°F). This varied climate makes Osa a versatile destination for travelers, offering both warm and cool experiences throughout the month.

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

The chart illustrates September temperature patterns in Osa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Osa, September typically has an average temperature of 10°C (50°F), with highs reaching up to 27°C (81°F) and lows dropping to around -1°C (30°F).

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

September Precipitation in Osa

In Osa in September, the total precipitation amount reaches 63 mm (2.5 in) over the course of 12 days.

September Precipitation Trends in Osa

The chart displays monthly precipitation patterns in Osa, 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 Osa, September typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 12 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 Osa

In Osa in September, humidity is 89%. With an average temperature of 10°C (50°F), this humidity feels like a dense blanket wrapping around you, making travel feel damp and chilly, and urging you to dress in layers for comfort.

September Average Humidity in Osa

This chart illustrates the average monthly humidity levels in Osa, 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 Osa is approximately 89%, 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 Osa

In Osa in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Osa for better planning.

Maximum UV Index Levels in Osa for September

The chart shows the monthly maximum UV Index (UVI) for Osa 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 Osa typically reaches 4, which falls under the moderate exposure category.

Data source: Osa 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 Osa Compares to Other Months

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

This table compares monthly weather conditions in Osa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-11°C (12°F)	44 mm (1.7 inches)	99%	low
February Weather	-10°C (14°F)	48 mm (1.9 inches)	97%	low
March Weather	-5°C (24°F)	49 mm (1.9 inches)	95%	moderate
April Weather	4°C (39°F)	44 mm (1.7 inches)	90%	moderate
May Weather	12°C (53°F)	44 mm (1.7 inches)	79%	high
June Weather	15°C (60°F)	60 mm (2.3 inches)	71%	high
July Weather	19°C (67°F)	87 mm (3.4 inches)	81%	high
August Weather	17°C (63°F)	59 mm (2.3 inches)	80%	high
September Weather	10°C (50°F)	63 mm (2.5 inches)	89%	moderate
October Weather	5°C (40°F)	61 mm (2.4 inches)	91%	moderate
November Weather	-4°C (26°F)	53 mm (2.1 inches)	94%	low
December Weather	-9°C (16°F)	48 mm (1.9 inches)	90%	low