April Weather in Sines, Portugal

Last updated: August 27, 2025

In April, the average temperature in Sines, Portugal hovers around 15°C (59°F). Expect a comfortable range, with minimums dipping to 8°C (46°F) and maximums rising to 27°C (82°F). Be prepared for some rain, as 70 mm (2.7 in) of precipitation typically falls over 12 days. With an average humidity of 69%, the atmosphere can feel quite refreshing.

April Temperature in Sines

In April in Sines, the average temperature is 15°C (59°F). Maximums can reach 27°C (82°F), and minimums can be as low as 8°C (46°F). This mild weather makes it an excellent time for outdoor activities and explorations.

April Weather in Sines: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sines, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sines, April typically has an average temperature of 15°C (59°F), with highs reaching up to 27°C (82°F) and lows dropping to around 8°C (46°F).

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

April Precipitation in Sines

In Sines in April, the precipitation amount is 70 mm (2.7 in) over the course of 12 days.

April Precipitation Trends in Sines

The chart displays monthly precipitation patterns in Sines, 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 Sines, April typically receives around 70 mm (2.7 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 Sines

In Sines in April humidity is 69%. With an average temperature of 15°C (59°F), this humidity feels like a mild blanket wrapping around you, making it slightly uncomfortable for traveling; you'll likely find yourself seeking shade and refreshing drinks to stay cool as you explore.

April Average Humidity in Sines

This chart illustrates the average monthly humidity levels in Sines, 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 Sines is approximately 69%, 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 Sines

In Sines 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 Sines.

Maximum UV Index Levels in Sines for April

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

Data source: Sines 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 Sines Compares to Other Months

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

This table compares monthly weather conditions in Sines, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (52°F)	31 mm (1.2 inches)	80%	moderate
February Weather	13°C (55°F)	55 mm (2.2 inches)	73%	moderate
March Weather	14°C (57°F)	82 mm (3.2 inches)	71%	high
April Weather	15°C (59°F)	70 mm (2.7 inches)	69%	very high
May Weather	18°C (65°F)	27 mm (1.1 inches)	69%	very high
June Weather	19°C (67°F)	9 mm (0.4 inches)	67%	extreme
July Weather	21°C (70°F)	3 mm (0.1 inches)	69%	very high
August Weather	21°C (71°F)	2 mm (0.1 inches)	68%	very high
September Weather	21°C (70°F)	13 mm (0.5 inches)	71%	very high
October Weather	18°C (65°F)	45 mm (1.8 inches)	75%	high
November Weather	15°C (59°F)	62 mm (2.4 inches)	78%	moderate
December Weather	13°C (55°F)	52 mm (2.0 inches)	81%	moderate