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September Weather in Porto Valtravaglia, Italy

Last updated: August 23, 2025

In September, the average temperature in Porto Valtravaglia, Italy 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 Porto Valtravaglia

In September in Porto Valtravaglia, 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 Porto Valtravaglia an ideal destination for travelers seeking mild weather with the possibility of warm afternoons and cool evenings.

September Weather in Porto Valtravaglia: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Porto Valtravaglia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porto Valtravaglia, 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).
JanFebMarAprMayJunJulAugSepOctNovDec384145525967717063554639
Data source: Temperature data for Porto Valtravaglia 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 Porto Valtravaglia

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

September Precipitation Trends in Porto Valtravaglia

The chart displays monthly precipitation patterns in Porto Valtravaglia, 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 Porto Valtravaglia, September typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec5950106152174198138157134282197107
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Porto Valtravaglia

In Porto Valtravaglia 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 Porto Valtravaglia

This chart illustrates the average monthly humidity levels in Porto Valtravaglia, 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 Porto Valtravaglia is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%81%76%77%74%71%67%64%74%87%88%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Porto Valtravaglia

In Porto Valtravaglia 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 Porto Valtravaglia.

Maximum UV Index Levels in Porto Valtravaglia for September

The chart shows the monthly maximum UV Index (UVI) for Porto Valtravaglia 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 Porto Valtravaglia typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec236689987532
Data source: Porto Valtravaglia 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 Porto Valtravaglia Compares to Other Months

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

This table compares monthly weather conditions in Porto Valtravaglia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)59 mm (2.3 inches)88%low
February Weather5°C (42°F)50 mm (2.0 inches)81%moderate
March Weather7°C (45°F)106 mm (4.2 inches)76%high
April Weather11°C (53°F)152 mm (6.0 inches)77%high
May Weather15°C (59°F)174 mm (6.9 inches)74%very high
June Weather20°C (68°F)198 mm (7.8 inches)71%very high
July Weather21°C (71°F)138 mm (5.4 inches)67%very high
August Weather21°C (71°F)157 mm (6.2 inches)64%very high
September Weather17°C (64°F)134 mm (5.3 inches)74%high
October Weather13°C (55°F)282 mm (11.1 inches)87%moderate
November Weather8°C (46°F)197 mm (7.8 inches)88%moderate
December Weather4°C (39°F)107 mm (4.2 inches)85%low

Compare Porto Valtravaglia's Climate with Cities Worldwide