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September Weather in Vale de Santarem, Portugal

Last updated: August 27, 2025

The average temperature in Vale de Santarem, Portugal during September is a pleasant 21°C (71°F). Expect a minimum of 11°C (51°F) and a maximum of 37°C (98°F). This month sees about 27 mm (1.1 in) of precipitation spread over 3 days, with an average humidity level of 67%. Enjoy the mild climate!

September Temperature in Vale de Santarem

In September in Vale de Santarem, the average temperature is 21°C (71°F). Maximum can reach 37°C (98°F) and minimum can be as low as 11°C (51°F). This diverse temperature range makes Vale de Santarem a great destination for travelers looking to enjoy both warm days and cool evenings.

September Weather in Vale de Santarem: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Vale de Santarem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vale de Santarem, September typically has an average temperature of 21°C (71°F), with highs reaching up to 37°C (98°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec495456596568717270655653
Data source: Temperature data for Vale de Santarem 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 Vale de Santarem

In Vale de Santarem in September, the total precipitation amount is 27 mm (1.1 in) over the course of 3 days.

September Precipitation Trends in Vale de Santarem

The chart displays monthly precipitation patterns in Vale de Santarem, 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 Vale de Santarem, September typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec3854808641154627568959
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Vale de Santarem

In Vale de Santarem in September humidity is 67%. With an average temperature of 21°C (71°F), this humidity feels like a warm blanket wrapping around you, making traveling both refreshing and a bit stifling at times, as the air clings to your skin and encourages slow, leisurely exploration.

September Average Humidity in Vale de Santarem

This chart illustrates the average monthly humidity levels in Vale de Santarem, 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 Vale de Santarem is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%75%72%70%70%63%60%60%68%74%83%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vale de Santarem

In Vale de Santarem 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 Vale de Santarem.

Maximum UV Index Levels in Vale de Santarem for September

The chart shows the monthly maximum UV Index (UVI) for Vale de Santarem 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 Vale de Santarem typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Vale de Santarem 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 Vale de Santarem Compares to Other Months

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

This table compares monthly weather conditions in Vale de Santarem, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)38 mm (1.5 inches)85%moderate
February Weather12°C (54°F)54 mm (2.1 inches)75%moderate
March Weather13°C (56°F)80 mm (3.1 inches)72%high
April Weather15°C (59°F)86 mm (3.4 inches)70%very high
May Weather18°C (65°F)41 mm (1.6 inches)70%very high
June Weather20°C (68°F)15 mm (0.6 inches)63%extreme
July Weather22°C (72°F)3 mm (0.1 inches)60%very high
August Weather22°C (72°F)6 mm (0.2 inches)60%very high
September Weather21°C (71°F)27 mm (1.1 inches)67%very high
October Weather18°C (65°F)55 mm (2.2 inches)74%high
November Weather13°C (56°F)89 mm (3.5 inches)83%moderate
December Weather11°C (53°F)59 mm (2.3 inches)85%moderate

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