March Weather in Castro Marim, Portugal

Last updated: August 27, 2025

In March, the average temperature in Castro Marim, Portugal is a pleasant 14°C (58°F). Temperatures can swing between a chilly 4°C (40°F) and a warm 24°C (76°F), providing a dynamic climate. Expect around 54 mm (2.1 in) of precipitation spread over 6 days, contributing to an average humidity of 71%. Whether you’re enjoying the mild days or bracing for the rain, be prepared for a delightful experience!

March Temperature in Castro Marim

In March in Castro Marim, the average temperature is 14°C (58°F), with maximum temperatures potentially reaching 24°C (76°F) and minimums dipping as low as 4°C (40°F). This moderate climate makes Castro Marim an ideal destination for travelers seeking pleasant weather and a comfortable atmosphere.

March Weather in Castro Marim: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Castro Marim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castro Marim, March typically has an average temperature of 14°C (58°F), with highs reaching up to 24°C (76°F) and lows dropping to around 4°C (40°F).

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

March Precipitation in Castro Marim

In Castro Marim in March, the total precipitation amount is 54 mm (2.1 in) over the course of 6 days.

March Precipitation Trends in Castro Marim

The chart displays monthly precipitation patterns in Castro Marim, 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 Castro Marim, March typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 6 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 Castro Marim

In Castro Marim in March humidity is 71%. With an average temperature of 14°C (58°F), this humidity feels like a damp embrace, making it essential for travelers to pack light, breathable clothing and stay hydrated while exploring the sights.

March Average Humidity in Castro Marim

This chart illustrates the average monthly humidity levels in Castro Marim, 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 Castro Marim 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 Castro Marim

In Castro Marim in March, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Castro Marim.

Maximum UV Index Levels in Castro Marim for March

The chart shows the monthly maximum UV Index (UVI) for Castro Marim 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 Castro Marim typically reaches 7, which falls under the high exposure category.

Data source: Castro Marim 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 Castro Marim Compares to Other Months

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

This table compares monthly weather conditions in Castro Marim, 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)	22 mm (0.9 inches)	80%	moderate
February Weather	13°C (55°F)	38 mm (1.5 inches)	73%	moderate
March Weather	14°C (58°F)	54 mm (2.1 inches)	71%	high
April Weather	16°C (61°F)	55 mm (2.2 inches)	69%	very high
May Weather	20°C (68°F)	19 mm (0.8 inches)	69%	very high
June Weather	22°C (73°F)	5 mm (0.2 inches)	67%	extreme
July Weather	25°C (78°F)	2 mm (0.1 inches)	69%	very high
August Weather	26°C (79°F)	1 mm (0.0 inches)	68%	very high
September Weather	24°C (75°F)	19 mm (0.8 inches)	71%	very high
October Weather	20°C (68°F)	25 mm (1.0 inches)	75%	high
November Weather	15°C (59°F)	54 mm (2.1 inches)	78%	moderate
December Weather	13°C (55°F)	37 mm (1.4 inches)	81%	moderate