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September Weather in Lostallo, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Lostallo, Switzerland hovers around 13°C (55°F). Expect a minimum drop to -2°C (29°F) and a peak of 23°C (74°F). With 113 mm (4.4 in) of precipitation spread over 13 days, the atmosphere feels quite humid, averaging around 83%. Make sure to pack accordingly!

September Temperature in Lostallo

In September in Lostallo, the average temperature is 13°C (55°F). Maximums can reach 23°C (74°F), and minimums can drop as low as -2°C (29°F). Be prepared for a wide range of temperatures during your travels, so pack accordingly!

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

The chart illustrates September temperature patterns in Lostallo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lostallo, September typically has an average temperature of 13°C (55°F), with highs reaching up to 23°C (74°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec283337445160636255473730
Data source: Temperature data for Lostallo generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Lostallo

In Lostallo in September, the precipitation amount is 113 mm (4.4 in) over the course of 13 days.

September Precipitation Trends in Lostallo

The chart displays monthly precipitation patterns in Lostallo, 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 Lostallo, September typically receives around 113 mm (4.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec52508511415113192135113166139108
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lostallo

In Lostallo in September humidity is 83%. With an average temperature of 13°C (55°F), this humidity feels like a damp embrace, often leaving travelers feeling slightly sticky and in need of frequent breaks in the shade.

September Average Humidity in Lostallo

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

In Lostallo 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 Lostallo.

Maximum UV Index Levels in Lostallo for September

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

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

This table compares monthly weather conditions in Lostallo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)52 mm (2.0 inches)92%low
February Weather0°C (33°F)50 mm (2.0 inches)89%moderate
March Weather3°C (37°F)85 mm (3.3 inches)87%high
April Weather7°C (44°F)114 mm (4.5 inches)84%very high
May Weather10°C (51°F)151 mm (6.0 inches)80%very high
June Weather15°C (60°F)131 mm (5.2 inches)82%very high
July Weather17°C (63°F)92 mm (3.6 inches)83%very high
August Weather17°C (62°F)135 mm (5.3 inches)80%very high
September Weather13°C (55°F)113 mm (4.4 inches)83%high
October Weather8°C (47°F)166 mm (6.5 inches)90%moderate
November Weather3°C (38°F)139 mm (5.5 inches)88%moderate
December Weather-1°C (30°F)108 mm (4.2 inches)90%low

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