March Weather in Sines, Portugal

Last updated: August 27, 2025

In March, the average temperature in Sines, Portugal hovers around 14°C (57°F), offering a pleasant climate for exploration. Temperatures can vary, dipping to a cool 6°C (43°F) at night or rising up to a warm 26°C (80°F) during the day. Be prepared for some rain, as precipitation averages 82 mm (3.2 in) over 9 days, and don't forget to account for the average humidity of 71% that adds a touch of moisture to the air!

March Temperature in Sines

In March in Sines, the average temperature is 14°C (57°F), with maximums reaching 26°C (80°F) and minimums dropping as low as 6°C (43°F). This pleasant climate makes Sines an ideal destination for outdoor activities and sightseeing during this time of year.

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

The chart illustrates March 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, March typically has an average temperature of 14°C (57°F), with highs reaching up to 26°C (80°F) and lows dropping to around 6°C (43°F).

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

March Precipitation in Sines

In Sines in March, the total precipitation amount is 82 mm (3.2 in), occurring over a span of 9 days.

March Precipitation Trends in Sines

The chart displays monthly precipitation patterns in Sines, 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 Sines, March typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Sines

In Sines in March, humidity is 71%. With an average temperature of 14°C (57°F), this humidity feels like a damp blanket enveloping you, making outdoor activities less enjoyable and encouraging visitors to seek refuge in shaded spots or air-conditioned spaces.

March Average Humidity in Sines

This chart illustrates the average monthly humidity levels in Sines, 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 Sines is approximately 71%, 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 Sines

In Sines in March, 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 Sines, you can refer to this Hourly UV Index in Sines.

Maximum UV Index Levels in Sines for March

The chart shows the monthly maximum UV Index (UVI) for Sines 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 Sines typically reaches 6, which falls under the high exposure category.

Data source: Sines 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 Sines Compares to Other Months

Weather in Sines varies notably across the year, with each month offering distinct climate conditions. This page compares March’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 March’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