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May Weather in Fronteira, Portugal

Last updated: August 27, 2025

In May, the average temperature in Fronteira, Portugal hovers around 19°C (66°F). However, expect fluctuations, with minimum temperatures dropping to 5°C (41°F) and maximums soaring to 35°C (95°F). This period also sees a total precipitation of 33 mm (1.3 in) spread across approximately 5 days, contributing to an average humidity level of 70%.

May Temperature in Fronteira

In May in Fronteira, the average temperature is 19°C (66°F), with maximums reaching up to 35°C (95°F) and minimums dropping as low as 5°C (41°F). Visitors should be prepared for a range of temperatures, making it advisable to bring layers for both warm and cool conditions.

May Weather in Fronteira: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Fronteira, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fronteira, May typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec485355596670757673655552
Data source: Temperature data for Fronteira 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.

May Precipitation in Fronteira

In Fronteira in May, the precipitation amount is 33 mm (1.3 in) over the course of 5 days.

May Precipitation Trends in Fronteira

The chart displays monthly precipitation patterns in Fronteira, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Fronteira, May typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec3447827733134524436963
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Fronteira

In Fronteira in May humidity is 70%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket enveloping you, making travel a bit sticky and prompting frequent breaks for water as you explore the sights.

May Average Humidity in Fronteira

This chart illustrates the average monthly humidity levels in Fronteira, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Fronteira is approximately 70%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Fronteira

In Fronteira in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Fronteira.

Maximum UV Index Levels in Fronteira for May

The chart shows the monthly maximum UV Index (UVI) for Fronteira in May, 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 May, the maximum UV index in Fronteira typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3469101110108643
Data source: Fronteira May 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 May Weather in Fronteira Compares to Other Months

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

This table compares monthly weather conditions in Fronteira, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)34 mm (1.3 inches)85%moderate
February Weather11°C (53°F)47 mm (1.9 inches)75%moderate
March Weather13°C (55°F)82 mm (3.2 inches)72%high
April Weather15°C (59°F)77 mm (3.0 inches)70%very high
May Weather19°C (66°F)33 mm (1.3 inches)70%very high
June Weather21°C (70°F)13 mm (0.5 inches)63%extreme
July Weather24°C (75°F)4 mm (0.2 inches)60%very high
August Weather25°C (76°F)4 mm (0.2 inches)60%very high
September Weather23°C (73°F)24 mm (0.9 inches)67%very high
October Weather18°C (65°F)43 mm (1.7 inches)74%high
November Weather13°C (56°F)69 mm (2.7 inches)83%moderate
December Weather11°C (52°F)63 mm (2.5 inches)85%moderate

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