September Weather in Nurmes, Finland

Last updated: August 23, 2025

In September, the average temperature in Nurmes, Finland hovers around 10°C (50°F), with a minimum dipping to -1°C (31°F) and a maximum reaching 22°C (72°F). Expect about 110 mm (4.3 in) of precipitation over 15 days, and be prepared for a high average humidity of 92%.

September Temperature in Nurmes

In September in Nurmes, the average temperature is 10°C (50°F), with maximums reaching 22°C (72°F) and minimums dipping as low as -1°C (31°F). Visitors should prepare for a variety of weather conditions, making layers essential for a comfortable travel experience.

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

The chart illustrates September temperature patterns in Nurmes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nurmes, September typically has an average temperature of 10°C (50°F), with highs reaching up to 22°C (72°F) and lows dropping to around -1°C (31°F).

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

September Precipitation in Nurmes

In Nurmes in September, the precipitation amount is 110 mm (4.3 in) over the course of 15 days.

September Precipitation Trends in Nurmes

The chart displays monthly precipitation patterns in Nurmes, 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 Nurmes, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 15 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 Nurmes

In Nurmes in September humidity is 92%. With an average temperature of 10°C (50°F), this humidity feels like a chilly, damp cloak wrapping around you, making every step outside feel heavy and each breath a bit more labored, turning exploring into an uncomfortable challenge.

September Average Humidity in Nurmes

This chart illustrates the average monthly humidity levels in Nurmes, 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 Nurmes 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 Nurmes

In Nurmes 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 Nurmes, you can check the information here.

Maximum UV Index Levels in Nurmes for September

The chart shows the monthly maximum UV Index (UVI) for Nurmes 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 Nurmes typically reaches 3, which falls under the moderate exposure category.

Data source: Nurmes 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 Nurmes Compares to Other Months

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

This table compares monthly weather conditions in Nurmes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	53 mm (2.1 inches)	99%	low
February Weather	-8°C (19°F)	48 mm (1.9 inches)	98%	low
March Weather	-4°C (25°F)	50 mm (2.0 inches)	95%	moderate
April Weather	1°C (34°F)	44 mm (1.7 inches)	87%	moderate
May Weather	7°C (44°F)	66 mm (2.6 inches)	78%	moderate
June Weather	15°C (60°F)	77 mm (3.0 inches)	75%	high
July Weather	17°C (63°F)	104 mm (4.1 inches)	83%	high
August Weather	15°C (59°F)	108 mm (4.3 inches)	88%	moderate
September Weather	10°C (50°F)	110 mm (4.3 inches)	92%	moderate
October Weather	4°C (40°F)	135 mm (5.3 inches)	95%	low
November Weather	0°C (32°F)	105 mm (4.1 inches)	94%	low
December Weather	-4°C (24°F)	76 mm (3.0 inches)	98%	low