January Weather in Jaerna, Sweden

Last updated: August 27, 2025

In Jaerna, Sweden, the average temperature in January hovers around -4°C (26°F), with extremes ranging from a chilly -25°C (-12°F) to a milder 8°C (46°F). Expect 43 mm (1.7 in) of precipitation spread across 9 days, contributing to an average humidity level of 97%. Bundle up and prepare for a truly wintry experience!

January Temperature in Jaerna

In January in Jaerna, the average temperature is -4°C (26°F). Maximums can reach 8°C (46°F) and minimums can dip as low as -25°C (-12°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.

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

The chart illustrates January temperature patterns in Jaerna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jaerna, January typically has an average temperature of -4°C (26°F), with highs reaching up to 8°C (46°F) and lows dropping to around -25°C (-12°F).

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

January Precipitation in Jaerna

In Jaerna in January, the precipitation amount reaches 43 mm (1.7 in) over the course of 9 days.

January Precipitation Trends in Jaerna

The chart displays monthly precipitation patterns in Jaerna, 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 Jaerna, January typically receives around 43 mm (1.7 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 Jaerna

In Jaerna in January humidity is 97%. With an average temperature of -4°C (26°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to keep warm.

January Average Humidity in Jaerna

This chart illustrates the average monthly humidity levels in Jaerna, 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 Jaerna 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 Jaerna

In Jaerna 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 Jaerna.

Maximum UV Index Levels in Jaerna for January

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

Data source: Jaerna 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 Jaerna Compares to Other Months

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

This table compares monthly weather conditions in Jaerna, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	43 mm (1.7 inches)	97%	low
February Weather	-3°C (26°F)	42 mm (1.6 inches)	94%	low
March Weather	-1°C (31°F)	44 mm (1.7 inches)	91%	moderate
April Weather	4°C (39°F)	35 mm (1.4 inches)	85%	moderate
May Weather	9°C (49°F)	69 mm (2.7 inches)	77%	moderate
June Weather	15°C (60°F)	80 mm (3.2 inches)	76%	high
July Weather	16°C (61°F)	84 mm (3.3 inches)	74%	high
August Weather	14°C (58°F)	96 mm (3.8 inches)	80%	moderate
September Weather	10°C (51°F)	69 mm (2.7 inches)	88%	moderate
October Weather	5°C (42°F)	92 mm (3.6 inches)	93%	low
November Weather	1°C (34°F)	62 mm (2.4 inches)	96%	low
December Weather	-3°C (27°F)	62 mm (2.5 inches)	96%	low