March Weather in Castanhal, Brazil

Last updated: August 22, 2025

In March, the average temperature in Castanhal, Brazil is a delightful 26°C (79°F). Expect to feel the warmth with minimums dropping to 22°C (71°F) and soaring to a maximum of 34°C (93°F). Be prepared for significant rainfall, with an average precipitation of 535 mm (21.1 in) over 30 days, and embrace the balmy conditions brought by an average humidity of 81%.

March Temperature in Castanhal

In March in Castanhal, the average temperature is 26°C (79°F), with maximums reaching up to 34°C (93°F) and minimums dropping to as low as 22°C (71°F). This pleasant climate makes Castanhal an ideal destination for outdoor activities and exploration.

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

The chart illustrates March temperature patterns in Castanhal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castanhal, March typically has an average temperature of 26°C (79°F), with highs reaching up to 34°C (93°F) and lows dropping to around 22°C (71°F).

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

March Precipitation in Castanhal

In Castanhal in March, the precipitation amount is 535 mm (21.1 in) over a period of 30 days.

March Precipitation Trends in Castanhal

The chart displays monthly precipitation patterns in Castanhal, 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 Castanhal, March typically receives around 535 mm (21.1 inches) of precipitation spread over approximately 30 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 Castanhal

In Castanhal in March, humidity is 81%. With an average temperature of 26°C (79°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor adventures stickier and more draining, yet still vibrant with life—perfect for exploring local culture, but you'll want to take frequent breaks and stay hydrated.

March Average Humidity in Castanhal

This chart illustrates the average monthly humidity levels in Castanhal, 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 Castanhal is approximately 81%, 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 Castanhal

In Castanhal 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 Castanhal.

Maximum UV Index Levels in Castanhal for March

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

Data source: Castanhal 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 Castanhal Compares to Other Months

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

This table compares monthly weather conditions in Castanhal, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	265 mm (10.4 inches)	89%	extreme
February Weather	26°C (79°F)	525 mm (20.7 inches)	81%	extreme
March Weather	26°C (79°F)	535 mm (21.1 inches)	81%	extreme
April Weather	26°C (79°F)	445 mm (17.5 inches)	85%	extreme
May Weather	26°C (80°F)	350 mm (13.8 inches)	89%	extreme
June Weather	27°C (80°F)	132 mm (5.2 inches)	86%	extreme
July Weather	27°C (80°F)	86 mm (3.4 inches)	81%	extreme
August Weather	27°C (81°F)	56 mm (2.2 inches)	72%	extreme
September Weather	28°C (82°F)	53 mm (2.1 inches)	69%	extreme
October Weather	28°C (83°F)	58 mm (2.3 inches)	69%	extreme
November Weather	28°C (82°F)	98 mm (3.9 inches)	71%	extreme
December Weather	27°C (81°F)	202 mm (8.0 inches)	82%	extreme