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September Weather in Sardinia, United States

Last updated: June 24, 2025

In Sardinia, United States, the average temperature in September hovers around 21°C (70°F), creating a pleasant climate. However, be prepared for variability, as temperatures can dip to 6°C (44°F) or soar to a sweltering 35°C (94°F). Expect 102 mm (4.0 in) of precipitation spread over 8 days, contributing to an average humidity level of 73%.

September Temperature in Sardinia

In September in Sardinia, the average temperature is 21°C (70°F). Maximum temperatures can reach up to 35°C (94°F), while minimum temperatures can drop as low as 6°C (44°F). This makes Sardinia an ideal destination for travelers seeking a pleasant climate with opportunities for both warm and cooler experiences.

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

The chart illustrates September temperature patterns in Sardinia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sardinia, September typically has an average temperature of 21°C (70°F), with highs reaching up to 35°C (94°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec333745546573777470594439
Data source: Temperature data for Sardinia 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 Sardinia

In Sardinia in September, the precipitation amount is 102 mm (4.0 in) over the course of 8 days.

September Precipitation Trends in Sardinia

The chart displays monthly precipitation patterns in Sardinia, 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 Sardinia, September typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec881231321361301461128410210595120
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sardinia

In Sardinia in September, humidity is 73%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace that can make outdoor activities feel sweltering, so it's essential to stay hydrated and take breaks in the shade while exploring.

September Average Humidity in Sardinia

This chart illustrates the average monthly humidity levels in Sardinia, 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 Sardinia is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sardinia

In Sardinia 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 Sardinia.

Maximum UV Index Levels in Sardinia for September

The chart shows the monthly maximum UV Index (UVI) for Sardinia 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 Sardinia typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Sardinia 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 Sardinia Compares to Other Months

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

This table compares monthly weather conditions in Sardinia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)88 mm (3.5 inches)88%moderate
February Weather3°C (38°F)122 mm (4.8 inches)88%moderate
March Weather7°C (45°F)131 mm (5.2 inches)87%high
April Weather12°C (54°F)136 mm (5.4 inches)85%very high
May Weather19°C (66°F)130 mm (5.1 inches)81%very high
June Weather23°C (73°F)146 mm (5.7 inches)82%very high
July Weather25°C (77°F)112 mm (4.4 inches)81%very high
August Weather24°C (75°F)84 mm (3.3 inches)73%very high
September Weather21°C (70°F)102 mm (4.0 inches)73%very high
October Weather15°C (59°F)105 mm (4.1 inches)78%high
November Weather6°C (44°F)95 mm (3.8 inches)89%moderate
December Weather4°C (39°F)120 mm (4.7 inches)87%moderate

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