January Weather in Alastaro, Finland

Last updated: August 23, 2025

In January, the average temperature in Alastaro, Finland hovers around -3°C (27°F). Expect chilly lows plunging to -25°C (-12°F) and occasional highs reaching up to 8°C (46°F). With 46 mm (1.8 in) of precipitation spread over 9 days, don't forget your umbrella! Additionally, average humidity remains quite high at 97%, adding to the wintry feel of the month.

January Temperature in Alastaro

In January in Alastaro, the average temperature is -3°C (27°F), with maximums reaching up to 8°C (46°F) and minimums plunging as low as -25°C (-12°F). Travelers should prepare for a cold climate and pack warm layers to ensure comfort while exploring.

January Weather in Alastaro: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Alastaro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alastaro, January typically has an average temperature of -3°C (27°F), with highs reaching up to 8°C (46°F) and lows dropping to around -25°C (-12°F).

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

January Precipitation in Alastaro

In Alastaro in January, the precipitation amount is 46 mm (1.8 in) over the course of 9 days.

January Precipitation Trends in Alastaro

The chart displays monthly precipitation patterns in Alastaro, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Alastaro, January typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Alastaro

In Alastaro in January, humidity is 97%. With an average temperature of -3°C (27°F), this humidity feels like stepping into a damp, icy fog that clings to your skin, making every breath heavy and each step outdoors a challenge, as the chill sinks deeper into your bones.

January Average Humidity in Alastaro

This chart illustrates the average monthly humidity levels in Alastaro, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Alastaro is approximately 97%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Alastaro

In Alastaro in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Alastaro.

Maximum UV Index Levels in Alastaro for January

The chart shows the monthly maximum UV Index (UVI) for Alastaro in January, 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 January, the maximum UV index in Alastaro typically reaches 1, which falls under the low exposure category.

Data source: Alastaro January 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 January Weather in Alastaro Compares to Other Months

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

This table compares monthly weather conditions in Alastaro, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	46 mm (1.8 inches)	97%	low
February Weather	-4°C (25°F)	42 mm (1.6 inches)	95%	low
March Weather	-1°C (31°F)	43 mm (1.7 inches)	93%	moderate
April Weather	4°C (39°F)	38 mm (1.5 inches)	86%	moderate
May Weather	10°C (50°F)	50 mm (2.0 inches)	75%	moderate
June Weather	16°C (61°F)	57 mm (2.2 inches)	75%	high
July Weather	17°C (64°F)	83 mm (3.3 inches)	80%	high
August Weather	16°C (61°F)	83 mm (3.3 inches)	83%	moderate
September Weather	11°C (53°F)	59 mm (2.3 inches)	90%	moderate
October Weather	6°C (44°F)	75 mm (3.0 inches)	93%	low
November Weather	3°C (37°F)	54 mm (2.1 inches)	94%	low
December Weather	-1°C (30°F)	64 mm (2.5 inches)	95%	low