nomadseason

September Weather in Arbon, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Arbon, Switzerland is a pleasant 15°C (59°F), with daytime highs reaching up to 26°C (80°F) and nighttime lows dipping to 4°C (39°F). Visitors should be prepared for 117 mm (4.6 in) of precipitation spread over approximately 12 days, and the air is typically quite humid, with an average humidity of 83%.

September Temperature in Arbon

In September in Arbon, the average temperature is 15°C (59°F), with maximums reaching up to 26°C (80°F) and minimums dropping as low as 4°C (39°F). This mild climate makes Arbon an ideal destination for travelers seeking comfortable weather during their visit.

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

The chart illustrates September temperature patterns in Arbon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arbon, September typically has an average temperature of 15°C (59°F), with highs reaching up to 26°C (80°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec323641495665676659514236
Data source: Temperature data for Arbon 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 Arbon

In Arbon in September, the total precipitation amount is 117 mm (4.6 in), occurring over a span of 12 days.

September Precipitation Trends in Arbon

The chart displays monthly precipitation patterns in Arbon, 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 Arbon, September typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec10983987614215214617511711873131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Arbon

In Arbon in September humidity is 83%. With an average temperature of 15°C (59°F), this humidity feels like a cozy, damp embrace that can be quite stifling for traveling, making even short walks feel more exhausting than they should, and prompting a need for frequent breaks in shaded or air-conditioned areas.

September Average Humidity in Arbon

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

In Arbon in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Arbon, you can refer to this Hourly UV Index in Arbon.

Maximum UV Index Levels in Arbon for September

The chart shows the monthly maximum UV Index (UVI) for Arbon 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 Arbon typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986431
Data source: Arbon 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 Arbon Compares to Other Months

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

This table compares monthly weather conditions in Arbon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)109 mm (4.3 inches)92%low
February Weather2°C (37°F)83 mm (3.3 inches)89%moderate
March Weather5°C (42°F)98 mm (3.8 inches)87%moderate
April Weather9°C (49°F)76 mm (3.0 inches)84%high
May Weather13°C (56°F)142 mm (5.6 inches)80%very high
June Weather18°C (65°F)152 mm (6.0 inches)82%very high
July Weather19°C (67°F)146 mm (5.7 inches)83%very high
August Weather19°C (67°F)175 mm (6.9 inches)80%very high
September Weather15°C (59°F)117 mm (4.6 inches)83%high
October Weather11°C (51°F)118 mm (4.7 inches)90%moderate
November Weather5°C (42°F)73 mm (2.9 inches)88%moderate
December Weather2°C (36°F)131 mm (5.2 inches)90%low

Compare Arbon's Climate with Cities Worldwide