January Weather in Nagu, Finland

Last updated: August 23, 2025

In January, the average temperature in Nagu, Finland hovers around 0°C (31°F), with lows plummeting to -16°C (3°F) and highs reaching 7°C (45°F). Expect 51 mm (2.0 in) of precipitation over 11 days, contributing to an average humidity of a damp 92%.

January Temperature in Nagu

In January in Nagu, the average temperature is 0°C (31°F). The maximum can reach 7°C (45°F) and the minimum can be as low as -16°C (3°F). Travelers should be prepared for cold weather and dress warmly during this time.

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

The chart illustrates January temperature patterns in Nagu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagu, January typically has an average temperature of 0°C (31°F), with highs reaching up to 7°C (45°F) and lows dropping to around -16°C (3°F).

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

January Precipitation in Nagu

In Nagu in January, the precipitation amount is 51 mm (2.0 in) spread over 11 days.

January Precipitation Trends in Nagu

The chart displays monthly precipitation patterns in Nagu, 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 Nagu, January typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 11 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 Nagu

In Nagu in January, humidity is 92%. With an average temperature of 0°C (31°F), this humidity feels like a chilling blanket that wraps around you, making every step feel heavier and leaving you longing for warmth as you navigate the damp, cold air—a challenging environment for traveling.

January Average Humidity in Nagu

This chart illustrates the average monthly humidity levels in Nagu, 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 Nagu is approximately 92%, 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 Nagu

In Nagu 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 Nagu.

Maximum UV Index Levels in Nagu for January

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

Data source: Nagu 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 Nagu Compares to Other Months

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

This table compares monthly weather conditions in Nagu, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (31°F)	51 mm (2.0 inches)	92%	low
February Weather	-2°C (28°F)	43 mm (1.7 inches)	90%	low
March Weather	0°C (32°F)	45 mm (1.8 inches)	89%	moderate
April Weather	3°C (39°F)	29 mm (1.1 inches)	85%	moderate
May Weather	9°C (48°F)	39 mm (1.5 inches)	77%	moderate
June Weather	15°C (59°F)	37 mm (1.4 inches)	78%	high
July Weather	18°C (64°F)	60 mm (2.4 inches)	78%	high
August Weather	17°C (63°F)	85 mm (3.3 inches)	79%	moderate
September Weather	13°C (56°F)	78 mm (3.1 inches)	86%	moderate
October Weather	9°C (48°F)	104 mm (4.1 inches)	90%	low
November Weather	5°C (42°F)	74 mm (2.9 inches)	91%	low
December Weather	1°C (35°F)	88 mm (3.5 inches)	89%	low