September Weather in Sessa, Switzerland

Last updated: August 27, 2025

In September, the average temperature in Sessa, Switzerland hovers around 17°C (64°F). You'll experience a minimum of 5°C (41°F) and a pleasant maximum of 27°C (81°F). Expect some rain, with 134 mm (5.3 in) of precipitation spread over 11 days. Don't forget that the average humidity is quite high at 74%, adding to the overall atmosphere of the month.

September Temperature in Sessa

In September in Sessa, the average temperature is 17°C (64°F). Maximums can reach 27°C (81°F), and minimums can be as low as 5°C (41°F). This climate makes Sessa an ideal destination for travelers seeking mild weather with the possibility of warm afternoons and cool evenings.

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

The chart illustrates September temperature patterns in Sessa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sessa, September typically has an average temperature of 17°C (64°F), with highs reaching up to 27°C (81°F) and lows dropping to around 5°C (41°F).

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

September Precipitation in Sessa

In Sessa in September, the precipitation amount is 134 mm (5.3 in) spread over 11 days.

September Precipitation Trends in Sessa

The chart displays monthly precipitation patterns in Sessa, 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 Sessa, September typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 11 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 Sessa

In Sessa in September, humidity is 74%. With an average temperature of 17°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities somewhat uncomfortable, especially for travelers who enjoy exploring. It's advisable to stay hydrated and take frequent breaks in the shade to fully enjoy your adventures.

September Average Humidity in Sessa

This chart illustrates the average monthly humidity levels in Sessa, 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 Sessa is approximately 74%, 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 Sessa

In Sessa 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 Sessa.

Maximum UV Index Levels in Sessa for September

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

Data source: Sessa 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 Sessa Compares to Other Months

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

This table compares monthly weather conditions in Sessa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	59 mm (2.3 inches)	88%	low
February Weather	5°C (42°F)	50 mm (2.0 inches)	81%	moderate
March Weather	7°C (45°F)	106 mm (4.2 inches)	76%	high
April Weather	11°C (53°F)	152 mm (6.0 inches)	77%	high
May Weather	15°C (59°F)	174 mm (6.9 inches)	74%	very high
June Weather	20°C (68°F)	198 mm (7.8 inches)	71%	very high
July Weather	21°C (71°F)	138 mm (5.4 inches)	67%	very high
August Weather	21°C (71°F)	157 mm (6.2 inches)	64%	very high
September Weather	17°C (64°F)	134 mm (5.3 inches)	74%	high
October Weather	13°C (55°F)	282 mm (11.1 inches)	87%	moderate
November Weather	8°C (46°F)	197 mm (7.8 inches)	88%	moderate
December Weather	4°C (39°F)	107 mm (4.2 inches)	85%	low