March Weather in Porto, Brazil

Last updated: August 22, 2025

In March, the average temperature in Porto, Brazil hovers around 27°C (80°F), making it a warm destination. Expect minimums of 23°C (73°F) and maximums reaching up to 34°C (93°F). However, be prepared for the wet season, with 409 mm (16.1 in) of precipitation spread over 29 days, contributing to an average humidity of a steamy 92%. 🌧️

March Temperature in Porto

In March in Porto, the average temperature is 27°C (80°F). Maximums can reach 34°C (93°F), while minimums can drop to as low as 23°C (73°F). This mild and warm weather makes Porto an ideal destination for travelers seeking pleasant conditions.

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

The chart illustrates March 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, March typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (93°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.

March Precipitation in Porto

In Porto in March, the total precipitation amount reaches 409 mm (16.1 in) over the course of 29 days.

March Precipitation Trends in Porto

The chart displays monthly precipitation patterns in Porto, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Porto, March typically receives around 409 mm (16.1 inches) of precipitation spread over approximately 29 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Porto

In Porto in March, humidity is 92%. With an average temperature of 27°C (80°F), this humidity feels like traveling through a warm, enveloping blanket that makes you feel sticky and lethargic, leaving you longing for refreshing air conditioning or a cool breeze.

March Average Humidity in Porto

This chart illustrates the average monthly humidity levels in Porto, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Porto is approximately 92%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Porto

In Porto in March, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Porto.

Maximum UV Index Levels in Porto for March

The chart shows the monthly maximum UV Index (UVI) for Porto in March, 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 March, the maximum UV index in Porto typically reaches 16, which falls under the extreme exposure category.

Data source: Porto March 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 March 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 March’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 March’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