January Weather in Siedlce, Poland

Last updated: August 27, 2025

In Siedlce, Poland, the average temperature in January hovers around -1°C (30°F). Temperatures can plummet to a chilling -26°C (-14°F) and reach a maximum of 10°C (51°F). You'll encounter 37 mm (1.5 in) of precipitation spread over 10 days, with an average humidity level of a staggering 91%.

January Temperature in Siedlce

In January in Siedlce, the average temperature is -1°C (30°F), with maximums that can reach 10°C (51°F) and minimums that can dip as low as -26°C (-14°F). Travelers should prepare for a cold and variable climate, ensuring they pack appropriate winter gear for their visit.

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

The chart illustrates January temperature patterns in Siedlce, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siedlce, January typically has an average temperature of -1°C (30°F), with highs reaching up to 10°C (51°F) and lows dropping to around -26°C (-14°F).

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

January Precipitation in Siedlce

In Siedlce in January, the precipitation amount is 37 mm (1.5 in) spread over a duration of 10 days.

January Precipitation Trends in Siedlce

The chart displays monthly precipitation patterns in Siedlce, 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 Siedlce, January typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Siedlce

In Siedlce in January, humidity is 91%. With an average temperature of -1°C (30°F), this humidity feels like stepping into a damp, chilly fog that clings to your skin, making every breath a reminder of the cold, and every step outdoors an adventure in resilience against the elements.

January Average Humidity in Siedlce

This chart illustrates the average monthly humidity levels in Siedlce, 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 Siedlce is approximately 91%, 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 Siedlce

In Siedlce in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Siedlce, you can visit Hourly UV Index in Siedlce.

Maximum UV Index Levels in Siedlce for January

The chart shows the monthly maximum UV Index (UVI) for Siedlce 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 Siedlce typically reaches 2, which falls under the low exposure category.

Data source: Siedlce 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 Siedlce Compares to Other Months

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

This table compares monthly weather conditions in Siedlce, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	37 mm (1.5 inches)	91%	low
February Weather	1°C (33°F)	46 mm (1.8 inches)	89%	low
March Weather	4°C (39°F)	39 mm (1.5 inches)	86%	moderate
April Weather	9°C (48°F)	56 mm (2.2 inches)	76%	high
May Weather	14°C (57°F)	84 mm (3.3 inches)	58%	high
June Weather	19°C (67°F)	68 mm (2.7 inches)	56%	very high
July Weather	20°C (68°F)	84 mm (3.3 inches)	56%	very high
August Weather	20°C (68°F)	100 mm (3.9 inches)	55%	high
September Weather	15°C (59°F)	85 mm (3.3 inches)	68%	high
October Weather	10°C (51°F)	69 mm (2.7 inches)	84%	moderate
November Weather	5°C (42°F)	39 mm (1.5 inches)	89%	low
December Weather	1°C (34°F)	51 mm (2.0 inches)	91%	low