September Weather in Haapavesi, Finland

Last updated: August 23, 2025

In September, the average temperature in Haapavesi, Finland hovers around 9°C (49°F). You'll experience a range of temperatures, with minimums dipping to -5°C (23°F) and maximums reaching up to 24°C (75°F). Be prepared for some moisture, as precipitation averages 76 mm (3.0 in) over about 13 days, and expect a high average humidity of 90%.

September Temperature in Haapavesi

In September in Haapavesi, the average temperature is 9°C (49°F). Maximums can reach 24°C (75°F), and minimums can be as low as -5°C (23°F). This diverse temperature range makes Haapavesi a destination where travelers should pack for varying weather conditions.

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

The chart illustrates September temperature patterns in Haapavesi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Haapavesi, September typically has an average temperature of 9°C (49°F), with highs reaching up to 24°C (75°F) and lows dropping to around -5°C (23°F).

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

September Precipitation in Haapavesi

In Haapavesi in September, the total precipitation amount is 76 mm (3.0 in), which occurs over the course of 13 days.

September Precipitation Trends in Haapavesi

The chart displays monthly precipitation patterns in Haapavesi, 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 Haapavesi, September typically receives around 76 mm (3.0 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 Haapavesi

In Haapavesi in September humidity is 90%. With an average temperature of 9°C (49°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less enjoyable and necessitating extra layers to stay warm and comfortable while traveling.

September Average Humidity in Haapavesi

This chart illustrates the average monthly humidity levels in Haapavesi, 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 Haapavesi is approximately 90%, 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 Haapavesi

In Haapavesi 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 Haapavesi, you can check the information here.

Maximum UV Index Levels in Haapavesi for September

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

Data source: Haapavesi 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 Haapavesi Compares to Other Months

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

This table compares monthly weather conditions in Haapavesi, 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)	39 mm (1.5 inches)	100%	low
February Weather	-8°C (19°F)	39 mm (1.6 inches)	98%	low
March Weather	-3°C (26°F)	38 mm (1.5 inches)	95%	low
April Weather	2°C (35°F)	42 mm (1.6 inches)	87%	moderate
May Weather	8°C (47°F)	59 mm (2.3 inches)	81%	moderate
June Weather	15°C (59°F)	57 mm (2.3 inches)	77%	high
July Weather	17°C (62°F)	78 mm (3.1 inches)	79%	high
August Weather	14°C (58°F)	89 mm (3.5 inches)	84%	moderate
September Weather	9°C (49°F)	76 mm (3.0 inches)	90%	moderate
October Weather	4°C (39°F)	83 mm (3.3 inches)	95%	low
November Weather	-1°C (31°F)	62 mm (2.4 inches)	95%	low
December Weather	-4°C (25°F)	52 mm (2.0 inches)	99%	low