January Weather in Castel San Pietro, Switzerland

Last updated: August 27, 2025

In January, the average temperature in Castel San Pietro, Switzerland hovers around 4°C (39°F), with temperatures ranging from a chilly -6°C (21°F) to a mild 16°C (60°F). Expect about 42 mm (1.7 in) of precipitation spread over 6 days, contributing to a high average humidity of 88%. Embrace the cozy atmosphere that this weather brings!

January Temperature in Castel San Pietro

In January in Castel San Pietro, the average temperature is 4°C (39°F), with maximums reaching 16°C (60°F) and minimums dipping as low as -6°C (21°F). Travelers should be prepared for a chilly climate, layering appropriately to enjoy their adventures comfortably.

January Weather in Castel San Pietro: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Castel San Pietro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castel San Pietro, January typically has an average temperature of 4°C (39°F), with highs reaching up to 16°C (60°F) and lows dropping to around -6°C (21°F).

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

January Precipitation in Castel San Pietro

In Castel San Pietro in January, the total precipitation amount is 42 mm (1.7 in) spread over 6 days.

January Precipitation Trends in Castel San Pietro

The chart displays monthly precipitation patterns in Castel San Pietro, 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 Castel San Pietro, January typically receives around 42 mm (1.7 inches) of precipitation spread over approximately 6 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 Castel San Pietro

In Castel San Pietro in January, humidity is 88%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to stay warm.

January Average Humidity in Castel San Pietro

This chart illustrates the average monthly humidity levels in Castel San Pietro, 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 Castel San Pietro is approximately 88%, 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 Castel San Pietro

In Castel San Pietro 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 Castel San Pietro, you can visit Hourly UV Index in Castel San Pietro.

Maximum UV Index Levels in Castel San Pietro for January

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

Data source: Castel San Pietro 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 Castel San Pietro Compares to Other Months

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

This table compares monthly weather conditions in Castel San Pietro, 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 (39°F)	42 mm (1.7 inches)	88%	low
February Weather	6°C (43°F)	46 mm (1.8 inches)	81%	moderate
March Weather	9°C (48°F)	88 mm (3.5 inches)	76%	moderate
April Weather	13°C (56°F)	124 mm (4.9 inches)	77%	high
May Weather	17°C (63°F)	143 mm (5.6 inches)	74%	very high
June Weather	22°C (72°F)	161 mm (6.4 inches)	71%	very high
July Weather	24°C (75°F)	164 mm (6.5 inches)	67%	very high
August Weather	24°C (75°F)	136 mm (5.3 inches)	64%	very high
September Weather	19°C (66°F)	146 mm (5.8 inches)	74%	high
October Weather	14°C (58°F)	152 mm (6.0 inches)	87%	moderate
November Weather	9°C (49°F)	169 mm (6.7 inches)	88%	moderate
December Weather	5°C (41°F)	94 mm (3.7 inches)	85%	low