September Weather in AEhtaeri, Finland

Last updated: August 23, 2025

In September, the average temperature in AEhtaeri, Finland hovers around 10°C (49°F). Expect a range that can dip to a chilly -4°C (25°F) and peak at a mild 22°C (72°F). During this month, you'll likely encounter 74 mm (2.9 in) of precipitation spread over approximately 13 days, contributing to an average humidity of 89%. Prepare for a blend of cool weather and occasional rain!

September Temperature in AEhtaeri

In September in AEhtaeri, the average temperature is 10°C (49°F), with maximums reaching up to 22°C (72°F) and minimums dropping as low as -4°C (25°F). This diverse temperature range makes it essential for travelers to pack accordingly and be prepared for both warm and chilly conditions.

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

The chart illustrates September temperature patterns in AEhtaeri, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In AEhtaeri, September typically has an average temperature of 10°C (49°F), with highs reaching up to 22°C (72°F) and lows dropping to around -4°C (25°F).

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

September Precipitation in AEhtaeri

In AEhtaeri in September, the precipitation amount is 74 mm (2.9 in) over the course of 13 days.

September Precipitation Trends in AEhtaeri

The chart displays monthly precipitation patterns in AEhtaeri, 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 AEhtaeri, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 13 days.

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

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Millimeters (mm) Inches (in)

September Humidity in AEhtaeri

In AEhtaeri in September, humidity is 89%. With an average temperature of 10°C (49°F), this humidity feels like a damp chill that penetrates your clothes and makes outdoor activities uncomfortable, often leaving travelers feeling clammy and in need of extra layers to stay warm.

September Average Humidity in AEhtaeri

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

In AEhtaeri 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 AEhtaeri, you can check the information here.

Maximum UV Index Levels in AEhtaeri for September

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

Data source: AEhtaeri 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 AEhtaeri Compares to Other Months

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

This table compares monthly weather conditions in AEhtaeri, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	44 mm (1.7 inches)	97%	low
February Weather	-6°C (21°F)	42 mm (1.7 inches)	95%	low
March Weather	-2°C (28°F)	44 mm (1.7 inches)	92%	moderate
April Weather	2°C (36°F)	46 mm (1.8 inches)	85%	moderate
May Weather	9°C (48°F)	62 mm (2.4 inches)	77%	moderate
June Weather	15°C (60°F)	64 mm (2.5 inches)	74%	high
July Weather	17°C (62°F)	62 mm (2.4 inches)	79%	high
August Weather	15°C (59°F)	92 mm (3.6 inches)	82%	moderate
September Weather	10°C (49°F)	74 mm (2.9 inches)	89%	moderate
October Weather	5°C (40°F)	76 mm (3.0 inches)	93%	low
November Weather	1°C (33°F)	66 mm (2.6 inches)	93%	low
December Weather	-3°C (26°F)	60 mm (2.4 inches)	95%	low