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September Weather in Grottammare, Italy

Last updated: August 23, 2025

In September, the average temperature in Grottammare, Italy is a pleasant 21°C (70°F). Expect a minimum of 12°C (54°F) and a maximum of 28°C (83°F), making it a comfortable time of year. However, be prepared for some rain, as the area receives about 78 mm (3.1 in) of precipitation over 8 days. With an average humidity of 67%, the air can feel quite refreshing!

September Temperature in Grottammare

In September, in Grottammare, the average temperature is 21°C (70°F), with maximums reaching 28°C (83°F) and minimums dropping as low as 12°C (54°F). This pleasant weather makes Grottammare an ideal destination for outdoor activities and sightseeing during this time.

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

The chart illustrates September temperature patterns in Grottammare, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grottammare, September typically has an average temperature of 21°C (70°F), with highs reaching up to 28°C (83°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec454749556372767770625548
Data source: Temperature data for Grottammare 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 Grottammare

In Grottammare in September, the total precipitation amount is 78 mm (3.1 in) over the course of 8 days.

September Precipitation Trends in Grottammare

The chart displays monthly precipitation patterns in Grottammare, 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 Grottammare, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec6364795795375435786312286
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grottammare

In Grottammare in September humidity is 67%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making travel a bit stifling but still enjoyable if you're prepared with light clothing and plenty of water.

September Average Humidity in Grottammare

This chart illustrates the average monthly humidity levels in Grottammare, 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 Grottammare is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%78%69%71%71%63%59%54%67%79%84%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grottammare

In Grottammare 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 Grottammare.

Maximum UV Index Levels in Grottammare for September

The chart shows the monthly maximum UV Index (UVI) for Grottammare 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 Grottammare typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24678101097532
Data source: Grottammare 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 Grottammare Compares to Other Months

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

This table compares monthly weather conditions in Grottammare, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)63 mm (2.5 inches)85%low
February Weather8°C (47°F)64 mm (2.5 inches)78%moderate
March Weather9°C (49°F)79 mm (3.1 inches)69%high
April Weather13°C (55°F)57 mm (2.2 inches)71%high
May Weather17°C (63°F)95 mm (3.7 inches)71%very high
June Weather22°C (72°F)37 mm (1.5 inches)63%very high
July Weather24°C (76°F)54 mm (2.1 inches)59%very high
August Weather25°C (77°F)35 mm (1.4 inches)54%very high
September Weather21°C (70°F)78 mm (3.1 inches)67%high
October Weather16°C (62°F)63 mm (2.5 inches)78%moderate
November Weather13°C (55°F)122 mm (4.8 inches)84%moderate
December Weather9°C (48°F)86 mm (3.4 inches)86%low

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