April Weather in Rio Maior, Portugal

Last updated: August 27, 2025

In Rio Maior, Portugal, the average temperature for April hovers around 15°C (59°F), making it a comfortable time to visit. Expect a range between a minimum of 6°C (43°F) and a maximum of 28°C (83°F). While you'll enjoy pleasant weather, be prepared for some rain, as precipitation averages 82 mm (3.2 in) over about 12 days. Additionally, the air can feel quite humid with an average of 70% humidity.

April Temperature in Rio Maior

In April in Rio Maior, the average temperature is 15°C (59°F). Maximums can reach 28°C (83°F), and minimums can be as low as 6°C (43°F). This mild weather makes it an ideal time for travelers to explore the outdoor attractions and enjoy pleasant strolls.

April Weather in Rio Maior: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Rio Maior, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Maior, April typically has an average temperature of 15°C (59°F), with highs reaching up to 28°C (83°F) and lows dropping to around 6°C (43°F).

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

April Precipitation in Rio Maior

In Rio Maior in April, the precipitation amount is 82 mm (3.2 in) occurring over a span of 12 days.

April Precipitation Trends in Rio Maior

The chart displays monthly precipitation patterns in Rio Maior, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Rio Maior, April typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Rio Maior

In Rio Maior in April, humidity is 70%. With an average temperature of 15°C (59°F), this humidity feels like a warm embrace, making it slightly uncomfortable while traveling, as the moist air clings to your skin and can leave you feeling slightly lethargic.

April Average Humidity in Rio Maior

This chart illustrates the average monthly humidity levels in Rio Maior, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Rio Maior is approximately 70%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Rio Maior

In Rio Maior in April, 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 Rio Maior.

Maximum UV Index Levels in Rio Maior for April

The chart shows the monthly maximum UV Index (UVI) for Rio Maior in April, 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 April, the maximum UV index in Rio Maior typically reaches 9, which falls under the very high exposure category.

Data source: Rio Maior April 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 April Weather in Rio Maior Compares to Other Months

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

This table compares monthly weather conditions in Rio Maior, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (51°F)	41 mm (1.6 inches)	85%	moderate
February Weather	12°C (54°F)	53 mm (2.1 inches)	75%	moderate
March Weather	13°C (56°F)	74 mm (2.9 inches)	72%	high
April Weather	15°C (59°F)	82 mm (3.2 inches)	70%	very high
May Weather	18°C (64°F)	39 mm (1.5 inches)	70%	very high
June Weather	19°C (67°F)	16 mm (0.6 inches)	63%	extreme
July Weather	21°C (70°F)	6 mm (0.2 inches)	60%	very high
August Weather	21°C (70°F)	6 mm (0.2 inches)	60%	very high
September Weather	21°C (69°F)	27 mm (1.1 inches)	67%	very high
October Weather	18°C (65°F)	58 mm (2.3 inches)	74%	high
November Weather	14°C (57°F)	88 mm (3.5 inches)	83%	moderate
December Weather	12°C (54°F)	64 mm (2.5 inches)	85%	moderate