May Weather in Chiasso, Switzerland

Last updated: August 27, 2025

The average temperature in Chiasso, Switzerland during May is a pleasant 17°C (63°F). While you may experience cooler days with a minimum of 5°C (41°F), the weather can also warm up to a maximum of 32°C (89°F). Expect about 143 mm (5.6 in) of precipitation spread over 16 days, with an average humidity level of 74%, making it a month of varied conditions.

May Temperature in Chiasso

In May in Chiasso, the average temperature is 17°C (63°F). The maximum can reach 32°C (89°F), and the minimum can be as low as 5°C (41°F). Travelers should be prepared for a mix of warm and cool weather, making it ideal for layering clothing.

May Weather in Chiasso: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Chiasso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chiasso, May typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (89°F) and lows dropping to around 5°C (41°F).

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

May Precipitation in Chiasso

In Chiasso in May, the precipitation amount is 143 mm (5.6 in) spread over 16 days.

May Precipitation Trends in Chiasso

The chart displays monthly precipitation patterns in Chiasso, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Chiasso, May typically receives around 143 mm (5.6 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Chiasso

In Chiasso in May, humidity is 74%. With an average temperature of 17°C (63°F), this humidity feels like a gentle embrace, making outdoor exploration comfortable yet slightly enveloped in warmth, perfect for leisurely strolls but requiring ample hydration for prolonged activities.

May Average Humidity in Chiasso

This chart illustrates the average monthly humidity levels in Chiasso, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Chiasso is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Chiasso

In Chiasso in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Chiasso.

Maximum UV Index Levels in Chiasso for May

The chart shows the monthly maximum UV Index (UVI) for Chiasso in May, 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 May, the maximum UV index in Chiasso typically reaches 8, which falls under the very high exposure category.

Data source: Chiasso May 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 May Weather in Chiasso Compares to Other Months

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

This table compares monthly weather conditions in Chiasso, showing how May’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