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August Weather in Leiria, Portugal

Last updated: August 27, 2025

In Leiria, Portugal, the average temperature in August hovers around 20°C (68°F). While you might experience a refreshing minimum of 12°C (54°F), be prepared for occasional warmer days, with highs reaching up to 37°C (99°F). During this time, expect a modest precipitation amount of just 6 mm (0.2 in) over 1 day, coupled with an average humidity level of 60%.

August Temperature in Leiria

In August in Leiria, the average temperature is 20°C (68°F). Maximum temperatures can reach 37°C (99°F), while the minimum can drop to as low as 12°C (54°F). This makes it an ideal time for travelers seeking a blend of comfortable warmth and cooler evenings to explore and enjoy outdoor activities.

August Weather in Leiria: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Leiria, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Leiria, August typically has an average temperature of 20°C (68°F), with highs reaching up to 37°C (99°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec495355576365686867625552
Data source: Temperature data for Leiria 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.

August Precipitation in Leiria

In Leiria in August, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

August Precipitation Trends in Leiria

The chart displays monthly precipitation patterns in Leiria, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Leiria, August typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec5267100105522476337810683
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Leiria

In Leiria in August, humidity is 60%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making traveling quite comfortable yet slightly sticky, perfect for leisurely strolls but reminding you to stay hydrated.

August Average Humidity in Leiria

This chart illustrates the average monthly humidity levels in Leiria, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Leiria is approximately 60%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Leiria

In Leiria in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Leiria.

Maximum UV Index Levels in Leiria for August

The chart shows the monthly maximum UV Index (UVI) for Leiria in August, 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 August, the maximum UV index in Leiria typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346910111098643
Data source: Leiria August 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 August Weather in Leiria Compares to Other Months

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

This table compares monthly weather conditions in Leiria, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)52 mm (2.1 inches)85%moderate
February Weather12°C (53°F)67 mm (2.6 inches)75%moderate
March Weather13°C (55°F)100 mm (4.0 inches)72%high
April Weather14°C (58°F)105 mm (4.1 inches)70%very high
May Weather17°C (63°F)52 mm (2.0 inches)70%very high
June Weather18°C (65°F)24 mm (0.9 inches)63%extreme
July Weather20°C (68°F)7 mm (0.3 inches)60%very high
August Weather20°C (68°F)6 mm (0.2 inches)60%very high
September Weather19°C (67°F)32 mm (1.3 inches)67%very high
October Weather17°C (63°F)78 mm (3.1 inches)74%high
November Weather13°C (56°F)106 mm (4.2 inches)83%moderate
December Weather11°C (53°F)83 mm (3.3 inches)85%moderate

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