January Weather in Sianow, Poland

Last updated: August 27, 2025

In January, the average temperature in Sianow, Poland hovers around 2°C (35°F), with a minimum dipping to a chilly -14°C (8°F) and a maximum reaching up to 12°C (54°F). Expect 61 mm (2.4 in) of precipitation spread over approximately 13 days, contributing to an average humidity of 87%. Make sure to dress warmly and be prepared for damp conditions!

January Temperature in Sianow

In January in Sianow, the average temperature is 2°C (35°F). Maximum temperatures can reach 12°C (54°F), while the minimum can drop as low as -14°C (8°F). Be prepared for a wide range of temperatures when traveling during this month.

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

The chart illustrates January temperature patterns in Sianow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sianow, January typically has an average temperature of 2°C (35°F), with highs reaching up to 12°C (54°F) and lows dropping to around -14°C (8°F).

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

January Precipitation in Sianow

In Sianow in January, the precipitation amount is 61 mm (2.4 in) occurring over the course of 13 days.

January Precipitation Trends in Sianow

The chart displays monthly precipitation patterns in Sianow, 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 Sianow, January typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 13 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 Sianow

In Sianow in January, humidity is 87%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making traveling feel uncomfortable and heavy, as each breath carries a hint of the cold, moist air that lingers around you.

January Average Humidity in Sianow

This chart illustrates the average monthly humidity levels in Sianow, 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 Sianow is approximately 87%, 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 Sianow

In Sianow 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 Sianow.

Maximum UV Index Levels in Sianow for January

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

Data source: Sianow 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 Sianow Compares to Other Months

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

This table compares monthly weather conditions in Sianow, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	61 mm (2.4 inches)	87%	low
February Weather	2°C (35°F)	50 mm (2.0 inches)	87%	low
March Weather	4°C (39°F)	54 mm (2.1 inches)	87%	moderate
April Weather	7°C (45°F)	35 mm (1.4 inches)	85%	moderate
May Weather	12°C (54°F)	55 mm (2.2 inches)	81%	high
June Weather	18°C (64°F)	51 mm (2.0 inches)	81%	high
July Weather	18°C (65°F)	110 mm (4.3 inches)	81%	high
August Weather	19°C (66°F)	66 mm (2.6 inches)	80%	high
September Weather	15°C (59°F)	81 mm (3.2 inches)	81%	moderate
October Weather	11°C (52°F)	92 mm (3.6 inches)	84%	moderate
November Weather	7°C (44°F)	58 mm (2.3 inches)	86%	low
December Weather	3°C (37°F)	62 mm (2.4 inches)	85%	low