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September Weather in Sao Jacinto, Portugal

Last updated: August 27, 2025

The average temperature in Sao Jacinto, Portugal during September is a comfortable 20°C (68°F). Expect a minimum of 11°C (52°F) and a maximum of 31°C (88°F). With precipitation averaging 32 mm (1.3 in) spread over 4 days, and an average humidity of 71%, it's a month that balances warm days with a hint of moisture in the air.

September Temperature in Sao Jacinto

In September in Sao Jacinto, the average temperature is 20°C (68°F), with maximums reaching 31°C (88°F) and minimums dropping as low as 11°C (52°F). This mild climate makes Sao Jacinto an ideal destination for travelers looking to enjoy pleasant weather.

September Weather in Sao Jacinto: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sao Jacinto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Jacinto, September typically has an average temperature of 20°C (68°F), with highs reaching up to 31°C (88°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec515455586365686867635754
Data source: Temperature data for Sao Jacinto 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 Sao Jacinto

In Sao Jacinto in September, the total precipitation amount is 32 mm (1.3 in), accumulated over a period of 4 days.

September Precipitation Trends in Sao Jacinto

The chart displays monthly precipitation patterns in Sao Jacinto, 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 Sao Jacinto, September typically receives around 32 mm (1.3 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec771091141146432131432101137150
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sao Jacinto

In Sao Jacinto in September, humidity is 71%. With an average temperature of 20°C (68°F), this humidity feels like a warm, moist embrace that can quickly lead to discomfort for travelers. The air clings to your skin, making even short walks feel more strenuous, while reaching for a refreshing drink becomes essential to stay hydrated.

September Average Humidity in Sao Jacinto

This chart illustrates the average monthly humidity levels in Sao Jacinto, 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 Sao Jacinto is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%81%78%79%78%71%63%64%71%79%86%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sao Jacinto

In Sao Jacinto 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 Sao Jacinto.

Maximum UV Index Levels in Sao Jacinto for September

The chart shows the monthly maximum UV Index (UVI) for Sao Jacinto 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 Sao Jacinto typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101098642
Data source: Sao Jacinto 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 Sao Jacinto Compares to Other Months

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

This table compares monthly weather conditions in Sao Jacinto, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (51°F)77 mm (3.0 inches)87%low
February Weather12°C (54°F)109 mm (4.3 inches)81%moderate
March Weather13°C (56°F)114 mm (4.5 inches)78%high
April Weather15°C (58°F)114 mm (4.5 inches)79%very high
May Weather17°C (63°F)64 mm (2.5 inches)78%very high
June Weather18°C (65°F)32 mm (1.3 inches)71%very high
July Weather20°C (68°F)13 mm (0.5 inches)63%very high
August Weather20°C (69°F)14 mm (0.5 inches)64%very high
September Weather20°C (68°F)32 mm (1.3 inches)71%very high
October Weather17°C (63°F)101 mm (4.0 inches)79%high
November Weather14°C (57°F)137 mm (5.4 inches)86%moderate
December Weather12°C (54°F)150 mm (5.9 inches)87%low

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