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May Weather in Portbou, Spain

Last updated: August 27, 2025

In May, the average temperature in Portbou, Spain hovers around 17°C (63°F). Expect lows of 9°C (48°F) and highs reaching 25°C (77°F). This month, you can anticipate 40 mm (1.6 in) of precipitation spread over 8 days, accompanied by an average humidity of 71%—perfect for those who enjoy a balanced climate.

May Temperature in Portbou

In May in Portbou, the average temperature is 17°C (63°F). Maximum temperatures can reach 25°C (77°F), while minimums can drop to as low as 9°C (48°F). This mild climate makes Portbou an ideal destination for enjoyable outdoor activities and sightseeing.

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

The chart illustrates May temperature patterns in Portbou, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portbou, May typically has an average temperature of 17°C (63°F), with highs reaching up to 25°C (77°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec505254576370757570645752
Data source: Temperature data for Portbou 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 Portbou

In Portbou in May, the precipitation amount is 40 mm (1.6 in), occurring over a span of 8 days.

May Precipitation Trends in Portbou

The chart displays monthly precipitation patterns in Portbou, 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 Portbou, May typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec61415070402481748948138
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Portbou

In Portbou in May, humidity is 71%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet a bit sticky, so travelers should stay hydrated and take breaks in the shade.

May Average Humidity in Portbou

This chart illustrates the average monthly humidity levels in Portbou, 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 Portbou is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%77%73%73%71%67%66%63%70%80%84%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Portbou

In Portbou in May, 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 Portbou.

Maximum UV Index Levels in Portbou for May

The chart shows the monthly maximum UV Index (UVI) for Portbou 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 Portbou typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34579101097532
Data source: Portbou 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 Portbou Compares to Other Months

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

This table compares monthly weather conditions in Portbou, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)61 mm (2.4 inches)82%moderate
February Weather11°C (52°F)41 mm (1.6 inches)77%moderate
March Weather12°C (54°F)50 mm (2.0 inches)73%moderate
April Weather14°C (57°F)70 mm (2.8 inches)73%high
May Weather17°C (63°F)40 mm (1.6 inches)71%very high
June Weather21°C (70°F)24 mm (0.9 inches)67%very high
July Weather24°C (75°F)8 mm (0.3 inches)66%very high
August Weather24°C (75°F)17 mm (0.7 inches)63%very high
September Weather21°C (70°F)48 mm (1.9 inches)70%high
October Weather18°C (64°F)94 mm (3.7 inches)80%moderate
November Weather14°C (57°F)81 mm (3.2 inches)84%moderate
December Weather11°C (53°F)38 mm (1.5 inches)83%low

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