nomadseason

September Weather in Giornico, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Giornico, Switzerland hovers around 7°C (46°F). However, it can experience a minimum of -11°C (13°F) and reach a maximum of 19°C (67°F). Visitors should prepare for rainy days, as the area sees approximately 149 mm (5.9 in) of precipitation over 15 days. With an average humidity level of 83%, the atmosphere can feel quite damp.

September Temperature in Giornico

In September in Giornico, the average temperature is 7°C (46°F), with a maximum that can reach 19°C (67°F) and a minimum that can dip as low as -11°C (13°F). Pack layers to comfortably adapt to the wide temperature range while enjoying your travels.

September Weather in Giornico: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Giornico, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Giornico, September typically has an average temperature of 7°C (46°F), with highs reaching up to 19°C (67°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec162125323950535245372619
Data source: Temperature data for Giornico generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Giornico

In Giornico in September, the precipitation amount is 149 mm (5.9 in) over a period of 15 days.

September Precipitation Trends in Giornico

The chart displays monthly precipitation patterns in Giornico, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Giornico, September typically receives around 149 mm (5.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec10972115130165200205260149221158161
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Giornico

In Giornico in September humidity is 83%. With average temperature 7°C (46°F), this humidity feels like a damp chill that seeps into your clothes, making every outdoor excursion feel heavier and less invigorating, requiring a thicker jacket and a more cautious step as you navigate the slightly slippery terrain.

September Average Humidity in Giornico

This chart illustrates the average monthly humidity levels in Giornico, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Giornico is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%89%87%84%80%82%83%80%83%90%89%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Giornico

In Giornico in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Giornico.

Maximum UV Index Levels in Giornico for September

The chart shows the monthly maximum UV Index (UVI) for Giornico in September, 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 September, the maximum UV index in Giornico typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101097532
Data source: Giornico September 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 September Weather in Giornico Compares to Other Months

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

This table compares monthly weather conditions in Giornico, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)109 mm (4.3 inches)92%low
February Weather-6°C (21°F)72 mm (2.8 inches)89%moderate
March Weather-4°C (25°F)115 mm (4.5 inches)87%high
April Weather0°C (32°F)130 mm (5.1 inches)84%very high
May Weather4°C (39°F)165 mm (6.5 inches)80%very high
June Weather10°C (50°F)200 mm (7.9 inches)82%very high
July Weather12°C (53°F)205 mm (8.1 inches)83%very high
August Weather11°C (52°F)260 mm (10.2 inches)80%very high
September Weather7°C (46°F)149 mm (5.9 inches)83%high
October Weather3°C (37°F)221 mm (8.7 inches)90%moderate
November Weather-3°C (26°F)158 mm (6.2 inches)88%moderate
December Weather-7°C (19°F)161 mm (6.3 inches)90%low

Compare Giornico's Climate with Cities Worldwide