August Weather in Posio, Finland

Last updated: August 23, 2025

The average temperature in Posio, Finland during August is a crisp 12°C (55°F). Expect cool days, with temperatures dipping to a minimum of 0°C (32°F) and soaring up to a warm 29°C (84°F). Be prepared for 110 mm (4.3 in) of precipitation over approximately 17 days, contributing to an average humidity of a high 87%.

August Temperature in Posio

In August in Posio, the average temperature is 12°C (55°F). Maximum temperatures can reach 29°C (84°F), while minimum temperatures can dip as low as 0°C (32°F). Be prepared for a range of weather conditions, making it a great time for both outdoor activities and cozy indoor explorations.

August Weather in Posio: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Posio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Posio, August typically has an average temperature of 12°C (55°F), with highs reaching up to 29°C (84°F) and lows dropping to around 0°C (32°F).

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

August Precipitation in Posio

In Posio in August, the precipitation amount is 110 mm (4.3 in) spread over 17 days.

August Precipitation Trends in Posio

The chart displays monthly precipitation patterns in Posio, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Posio, August typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 17 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Posio

In Posio in August humidity is 87%. With an average temperature of 12°C (55°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and requiring extra layers for comfort while traveling.

August Average Humidity in Posio

This chart illustrates the average monthly humidity levels in Posio, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Posio is approximately 87%, offering insight into how humid the weather typically is during this month.

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

August UV Index in Posio

In Posio in August, 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 Posio for better planning.

Maximum UV Index Levels in Posio for August

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

Data source: Posio August 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 August Weather in Posio Compares to Other Months

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

This table compares monthly weather conditions in Posio, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (14°F)	43 mm (1.7 inches)	101%	low
February Weather	-10°C (14°F)	40 mm (1.6 inches)	99%	low
March Weather	-6°C (21°F)	44 mm (1.7 inches)	94%	low
April Weather	0°C (32°F)	43 mm (1.7 inches)	88%	moderate
May Weather	5°C (41°F)	49 mm (1.9 inches)	83%	moderate
June Weather	12°C (55°F)	85 mm (3.4 inches)	79%	high
July Weather	15°C (60°F)	76 mm (3.0 inches)	83%	high
August Weather	12°C (55°F)	110 mm (4.3 inches)	87%	moderate
September Weather	7°C (46°F)	82 mm (3.2 inches)	91%	moderate
October Weather	2°C (35°F)	82 mm (3.2 inches)	96%	low
November Weather	-3°C (27°F)	71 mm (2.8 inches)	96%	low
December Weather	-7°C (20°F)	58 mm (2.3 inches)	100%	low