October Weather in Porto, Brazil

Last updated: August 22, 2025

In Porto, Brazil, the average temperature in October hovers around 30°C (87°F). Expect cooler nights with minimums of 23°C (73°F) and sunny days peaking at a sizzling 39°C (103°F). During this period, anticipate a modest precipitation amount of 7 mm (0.3 in) over approximately 1 day, all while enjoying a pleasant average humidity of just 35%.

October Temperature in Porto

In October in Porto, the average temperature is 30°C (87°F), with maximums reaching 39°C (103°F) and minimums dipping as low as 23°C (73°F). Travelers should prepare for warm weather and stay hydrated while enjoying all that Porto has to offer.

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 30°C (87°F), with highs reaching up to 39°C (103°F) and lows dropping to around 23°C (73°F).

Data source: Temperature data for Porto generated using information from the Copernicus Climate Change Service.

October Precipitation in Porto

In Porto in October, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

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 7 mm (0.3 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Porto

In Porto in October, humidity is 35%. With an average temperature of 30°C (87°F), this humidity feels like a warm embrace that keeps you comfortable during your travels, allowing you to explore without feeling overwhelmed by the heat.

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 35%, offering insight into how humid the weather typically is during this month.

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 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the 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 12, which falls under the extreme exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	28°C (82°F)	194 mm (7.6 inches)	90%	extreme
February Weather	27°C (81°F)	315 mm (12.4 inches)	91%	extreme
March Weather	27°C (80°F)	409 mm (16.1 inches)	92%	extreme
April Weather	27°C (81°F)	312 mm (12.3 inches)	93%	extreme
May Weather	27°C (81°F)	149 mm (5.9 inches)	88%	extreme
June Weather	28°C (82°F)	22 mm (0.9 inches)	75%	extreme
July Weather	28°C (82°F)	18 mm (0.7 inches)	52%	extreme
August Weather	29°C (84°F)	3 mm (0.1 inches)	42%	extreme
September Weather	30°C (86°F)	2 mm (0.1 inches)	36%	extreme
October Weather	30°C (87°F)	7 mm (0.3 inches)	35%	extreme
November Weather	30°C (86°F)	61 mm (2.4 inches)	43%	extreme
December Weather	29°C (85°F)	69 mm (2.7 inches)	76%	extreme