August Weather in Castelo, Brazil

Last updated: August 22, 2025

In August, the average temperature in Castelo, Brazil hovers around 18°C (65°F), with a minimum of 8°C (46°F) and a maximum reaching 30°C (87°F). Expect about 33 mm (1.3 in) of precipitation over 8 days, contributing to an average humidity level of 75%. This blend of warmth and moisture creates a distinctive climate perfect for exploration!

August Temperature in Castelo

In August in Castelo, the average temperature is 18°C (65°F), with maximums reaching up to 30°C (87°F) and minimums dropping as low as 8°C (46°F). This range makes it a perfect time to explore outdoor activities while also packing for cooler evenings.

August Weather in Castelo: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Castelo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castelo, August typically has an average temperature of 18°C (65°F), with highs reaching up to 30°C (87°F) and lows dropping to around 8°C (46°F).

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

August Precipitation in Castelo

In Castelo in August, the precipitation amount is 33 mm (1.3 in) during a span of 8 days.

August Precipitation Trends in Castelo

The chart displays monthly precipitation patterns in Castelo, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Castelo, August typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Castelo

In Castelo in August, humidity is 75%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket that can make outdoor exploration feel a bit stifling, potentially leading to discomfort during travel activities.

August Average Humidity in Castelo

This chart illustrates the average monthly humidity levels in Castelo, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Castelo is approximately 75%, offering insight into how humid the weather typically is during this month.

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

August UV Index in Castelo

In Castelo in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Castelo.

Maximum UV Index Levels in Castelo for August

The chart shows the monthly maximum UV Index (UVI) for Castelo in August, 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 August, the maximum UV index in Castelo typically reaches 10, which falls under the very high exposure category.

Data source: Castelo August 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 August Weather in Castelo Compares to Other Months

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

This table compares monthly weather conditions in Castelo, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	86 mm (3.4 inches)	80%	extreme
February Weather	24°C (75°F)	176 mm (6.9 inches)	85%	extreme
March Weather	23°C (74°F)	131 mm (5.1 inches)	86%	extreme
April Weather	22°C (71°F)	76 mm (3.0 inches)	85%	extreme
May Weather	20°C (68°F)	46 mm (1.8 inches)	82%	very high
June Weather	19°C (67°F)	24 mm (1.0 inches)	81%	high
July Weather	18°C (64°F)	18 mm (0.7 inches)	79%	very high
August Weather	18°C (65°F)	33 mm (1.3 inches)	75%	very high
September Weather	21°C (70°F)	50 mm (2.0 inches)	72%	extreme
October Weather	22°C (72°F)	114 mm (4.5 inches)	66%	extreme
November Weather	22°C (71°F)	167 mm (6.6 inches)	69%	extreme
December Weather	23°C (74°F)	175 mm (6.9 inches)	72%	extreme