September Weather in Mex, Switzerland

Last updated: August 27, 2025

In Mex, Switzerland during September, the average temperature hovers around 11°C (52°F). You can expect temperatures to range from a chilly -5°C (24°F) to a pleasant 23°C (74°F). Rainfall is not unusual, with an average precipitation amount of 120 mm (4.7 in) spread over 15 days. Humidity levels are notably high, averaging at 81%, contributing to the overall atmosphere of the season.

September Temperature in Mex

In September in Mex, the average temperature is 11°C (52°F). The maximum can reach 23°C (74°F), while the minimum can drop as low as -5°C (24°F). This wide range of temperatures makes it essential to pack layers and be prepared for varying weather conditions while traveling.

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

The chart illustrates September temperature patterns in Mex, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mex, September typically has an average temperature of 11°C (52°F), with highs reaching up to 23°C (74°F) and lows dropping to around -5°C (24°F).

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

September Precipitation in Mex

In Mex in September, the precipitation amount is 120 mm (4.7 in) spread over 15 days.

September Precipitation Trends in Mex

The chart displays monthly precipitation patterns in Mex, 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 Mex, September typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 15 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Mex

In Mex in September humidity is 81%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor excursions quite uncomfortable, causing a muggy heaviness that dampens clothes and leaves travelers longing for dryer weather.

September Average Humidity in Mex

This chart illustrates the average monthly humidity levels in Mex, 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 Mex is approximately 81%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Mex

In Mex 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 Mex.

Maximum UV Index Levels in Mex for September

The chart shows the monthly maximum UV Index (UVI) for Mex 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 Mex typically reaches 7, which falls under the high exposure category.

Data source: Mex 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 Mex Compares to Other Months

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

This table compares monthly weather conditions in Mex, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	138 mm (5.4 inches)	91%	low
February Weather	-2°C (29°F)	115 mm (4.5 inches)	89%	moderate
March Weather	1°C (34°F)	142 mm (5.6 inches)	87%	high
April Weather	5°C (41°F)	90 mm (3.5 inches)	84%	high
May Weather	8°C (47°F)	211 mm (8.3 inches)	80%	very high
June Weather	13°C (56°F)	211 mm (8.3 inches)	82%	very high
July Weather	15°C (59°F)	206 mm (8.1 inches)	82%	very high
August Weather	14°C (58°F)	189 mm (7.4 inches)	77%	very high
September Weather	11°C (52°F)	120 mm (4.7 inches)	81%	high
October Weather	7°C (44°F)	127 mm (5.0 inches)	89%	moderate
November Weather	1°C (33°F)	105 mm (4.1 inches)	89%	moderate
December Weather	-4°C (24°F)	228 mm (9.0 inches)	91%	low