September Weather in Vevay, United States

Last updated: June 24, 2025

In September, the average temperature in Vevay, United States is a comfortable 21°C (71°F). Expect a range that can dip to a cool 7°C (45°F) and soar to a warm 35°C (95°F). With an average precipitation of 103 mm (4.0 in) over about 9 days, and a humidity level of 69%, you'll experience a pleasant mix of climate conditions.

September Temperature in Vevay

In September in Vevay, the average temperature is 21°C (71°F). The maximum can reach 35°C (95°F), while the minimum can drop to as low as 7°C (45°F). This makes Vevay an ideal destination for travelers looking to enjoy a warm climate with refreshing cooler evenings.

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

The chart illustrates September temperature patterns in Vevay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vevay, September typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (45°F).

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

September Precipitation in Vevay

In Vevay in September, the precipitation amount is 103 mm (4.0 in) over the course of 9 days.

September Precipitation Trends in Vevay

The chart displays monthly precipitation patterns in Vevay, 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 Vevay, September typically receives around 103 mm (4.0 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Vevay

In Vevay in September humidity is 69%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, creating a tropical atmosphere that can make outdoor activities feel slightly sticky, yet invigorating for travelers who are ready to embrace the local culture and explore.

September Average Humidity in Vevay

This chart illustrates the average monthly humidity levels in Vevay, 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 Vevay is approximately 69%, 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 Vevay

In Vevay in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Vevay.

Maximum UV Index Levels in Vevay for September

The chart shows the monthly maximum UV Index (UVI) for Vevay 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 Vevay typically reaches 8, which falls under the very high exposure category.

Data source: Vevay 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 Vevay Compares to Other Months

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

This table compares monthly weather conditions in Vevay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	83 mm (3.3 inches)	87%	moderate
February Weather	3°C (38°F)	122 mm (4.8 inches)	85%	moderate
March Weather	8°C (46°F)	138 mm (5.4 inches)	86%	high
April Weather	13°C (55°F)	132 mm (5.2 inches)	84%	very high
May Weather	19°C (66°F)	129 mm (5.1 inches)	79%	very high
June Weather	23°C (74°F)	162 mm (6.4 inches)	82%	very high
July Weather	25°C (77°F)	116 mm (4.6 inches)	79%	very high
August Weather	24°C (75°F)	97 mm (3.8 inches)	70%	very high
September Weather	21°C (71°F)	103 mm (4.0 inches)	69%	very high
October Weather	15°C (59°F)	103 mm (4.1 inches)	76%	high
November Weather	7°C (44°F)	92 mm (3.6 inches)	88%	moderate
December Weather	4°C (40°F)	108 mm (4.3 inches)	87%	moderate