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September Weather in Mafra, Brazil

Last updated: August 22, 2025

In September, the average temperature in Mafra, Brazil hovers around 18°C (65°F), offering a pleasant climate for outdoor activities. Expect temperatures to range from a cool 5°C (42°F) to a warm 32°C (90°F). While you enjoy the mild weather, be prepared for an average precipitation of 69 mm (2.7 in) over approximately 8 days, contributing to an average humidity of 82%.

September Temperature in Mafra

In September in Mafra, the average temperature is 18°C (65°F). The maximum can reach 32°C (90°F) and the minimum can be as low as 5°C (42°F). It's a great time for travelers to enjoy mild weather while being prepared for both warm and cooler days.

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

The chart illustrates September temperature patterns in Mafra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mafra, September typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (90°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec727170656159575965656770
Data source: Temperature data for Mafra 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 Mafra

In Mafra in September, the precipitation amount is 69 mm (2.7 in) that falls over a period of 8 days.

September Precipitation Trends in Mafra

The chart displays monthly precipitation patterns in Mafra, 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 Mafra, September typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1501241094787118277969147103137
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mafra

In Mafra in September, humidity is 82%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can quickly leave travelers feeling fatigued and in need of frequent breaks to stay refreshed and hydrated.

September Average Humidity in Mafra

This chart illustrates the average monthly humidity levels in Mafra, 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 Mafra is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%83%85%85%86%85%80%79%82%82%86%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mafra

In Mafra in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Mafra.

Maximum UV Index Levels in Mafra for September

The chart shows the monthly maximum UV Index (UVI) for Mafra 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 Mafra typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15151311866911131515
Data source: Mafra 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 Mafra Compares to Other Months

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

This table compares monthly weather conditions in Mafra, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)150 mm (5.9 inches)86%extreme
February Weather21°C (71°F)124 mm (4.9 inches)83%extreme
March Weather21°C (70°F)109 mm (4.3 inches)85%extreme
April Weather18°C (65°F)47 mm (1.9 inches)85%extreme
May Weather16°C (61°F)87 mm (3.4 inches)86%very high
June Weather15°C (59°F)118 mm (4.6 inches)85%high
July Weather14°C (57°F)27 mm (1.0 inches)80%high
August Weather15°C (59°F)79 mm (3.1 inches)79%very high
September Weather18°C (65°F)69 mm (2.7 inches)82%extreme
October Weather18°C (65°F)147 mm (5.8 inches)82%extreme
November Weather19°C (67°F)103 mm (4.1 inches)86%extreme
December Weather21°C (70°F)137 mm (5.4 inches)88%extreme

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