July Weather in Castanhal, Brazil

Last updated: August 22, 2025

In Castanhal, Brazil, the average temperature in July reaches a warm 27°C (80°F). Expect a minimum of 20°C (69°F) and a maximum of 34°C (93°F). You might want to carry an umbrella, as precipitation measures around 86 mm (3.4 in) over 16 days, and the average humidity hovers at a comfortable 81%.

July Temperature in Castanhal

In July in Castanhal, the average temperature is 27°C (80°F), with maximums reaching 34°C (93°F) and minimums dropping to as low as 20°C (69°F). This mild and warm weather makes it an ideal destination for travelers seeking pleasant conditions to explore and relax.

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

The chart illustrates July 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, July typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (93°F) and lows dropping to around 20°C (69°F).

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

July Precipitation in Castanhal

In Castanhal in July, the precipitation amount is 86 mm (3.4 in) over a period of 16 days.

July Precipitation Trends in Castanhal

The chart displays monthly precipitation patterns in Castanhal, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Castanhal, July typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Castanhal

In Castanhal in July, humidity is 81%. With an average temperature of 27°C (80°F), this humidity feels like a warm blanket wrapping around you, making travel feel sticky and heavy, but the vibrant atmosphere can still be invigorating, inviting moments of exploration in slower, more deliberate steps.

July Average Humidity in Castanhal

This chart illustrates the average monthly humidity levels in Castanhal, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Castanhal is approximately 81%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Castanhal

In Castanhal in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Castanhal.

Maximum UV Index Levels in Castanhal for July

The chart shows the monthly maximum UV Index (UVI) for Castanhal in July, 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 July, the maximum UV index in Castanhal typically reaches 11, which falls under the extreme exposure category.

Data source: Castanhal July 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 July 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 July’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 July’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