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October Weather in Porto, Spain

Last updated: August 27, 2025

In October, the average temperature in Porto, Spain hovers around 11°C (53°F). Expect a range from a chilly -2°C (29°F) to a warm 25°C (78°F). During this time, you can anticipate about 99 mm (3.9 in) of precipitation over approximately 11 days, with the average humidity sitting at a comfortable 82%.

October Temperature in Porto

In October, in Porto, the average temperature is 11°C (53°F). Maximum temperatures can reach 25°C (78°F), while minimums can drop as low as -2°C (29°F). It’s advisable for travelers to be prepared for a wide range of temperatures during this time.

October Weather in Porto: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Porto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porto, October typically has an average temperature of 11°C (53°F), with highs reaching up to 25°C (78°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec384143475459646459524341
Data source: Temperature data for Porto 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.

October Precipitation in Porto

In Porto, in October, the precipitation amount is 99 mm (3.9 in) over the course of 11 days.

October Precipitation Trends in Porto

The chart displays monthly precipitation patterns in Porto, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Porto, October typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec811231351201009449347199142182
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Porto

In Porto in October humidity is 82%. With an average temperature of 11°C (53°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities uncomfortable and sticky, often requiring frequent breaks to escape the muggy atmosphere.

October Average Humidity in Porto

This chart illustrates the average monthly humidity levels in Porto, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Porto is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%83%83%84%84%86%78%77%82%86%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Porto

In Porto in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Porto, you can refer to this Hourly UV Index in Porto.

Maximum UV Index Levels in Porto for October

The chart shows the monthly maximum UV Index (UVI) for Porto in October, 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 October, the maximum UV index in Porto typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689111098632
Data source: Porto October 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 October Weather in Porto Compares to Other Months

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

This table compares monthly weather conditions in Porto, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)80 mm (3.2 inches)87%low
February Weather5°C (41°F)123 mm (4.8 inches)85%moderate
March Weather6°C (43°F)135 mm (5.3 inches)83%high
April Weather9°C (48°F)120 mm (4.7 inches)83%very high
May Weather12°C (54°F)100 mm (4.0 inches)84%very high
June Weather15°C (59°F)94 mm (3.7 inches)84%extreme
July Weather18°C (64°F)49 mm (1.9 inches)86%very high
August Weather18°C (64°F)34 mm (1.3 inches)78%very high
September Weather15°C (59°F)71 mm (2.8 inches)77%very high
October Weather11°C (53°F)99 mm (3.9 inches)82%high
November Weather6°C (43°F)142 mm (5.6 inches)86%moderate
December Weather5°C (41°F)182 mm (7.2 inches)87%low

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