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September Weather in Lalden, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Lalden, Switzerland hovers around 8°C (48°F). Expect it to dip to a chilly -4°C (25°F) at times, while warming up to a pleasant 21°C (69°F) during the day. With 116 mm (4.6 in) of precipitation spread over 16 days, be prepared for some wet weather. Overall, the atmosphere is quite humid, with an average humidity of 83%.

September Temperature in Lalden

In September in Lalden, the average temperature is 8°C (48°F). The maximum can reach 21°C (69°F), while the minimum can drop as low as -4°C (25°F). This variation in temperature suggests that travelers should be prepared for both mild daytime conditions and potentially chilly evenings.

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

The chart illustrates September temperature patterns in Lalden, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lalden, September typically has an average temperature of 8°C (48°F), with highs reaching up to 21°C (69°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec162227344152555447392718
Data source: Temperature data for Lalden 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 Lalden

In Lalden in September, the precipitation amount is 116 mm (4.6 in) over a period of 16 days.

September Precipitation Trends in Lalden

The chart displays monthly precipitation patterns in Lalden, 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 Lalden, September typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec11575111113163173131152116195141156
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lalden

In Lalden in September, humidity is 83%. With an average temperature of 8°C (48°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers and stay active to keep warm while exploring the sights.

September Average Humidity in Lalden

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

In Lalden 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 Lalden.

Maximum UV Index Levels in Lalden for September

The chart shows the monthly maximum UV Index (UVI) for Lalden 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 Lalden typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec348910111097632
Data source: Lalden 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 Lalden Compares to Other Months

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

This table compares monthly weather conditions in Lalden, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)115 mm (4.5 inches)92%moderate
February Weather-5°C (23°F)75 mm (2.9 inches)89%moderate
March Weather-3°C (27°F)111 mm (4.4 inches)87%very high
April Weather1°C (35°F)113 mm (4.4 inches)84%very high
May Weather5°C (41°F)163 mm (6.4 inches)80%very high
June Weather11°C (52°F)173 mm (6.8 inches)82%extreme
July Weather13°C (55°F)131 mm (5.2 inches)83%very high
August Weather12°C (54°F)151 mm (6.0 inches)80%very high
September Weather8°C (48°F)116 mm (4.6 inches)83%high
October Weather4°C (39°F)195 mm (7.7 inches)90%high
November Weather-3°C (27°F)141 mm (5.5 inches)88%moderate
December Weather-8°C (18°F)156 mm (6.2 inches)90%low

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