January Weather in Castilho, Brazil

Last updated: August 22, 2025

In January, the average temperature in Castilho, Brazil is a warm 27°C (81°F). Expect lows of 21°C (69°F) and highs reaching up to 37°C (98°F). During this time, the region experiences 153 mm (6.0 in) of precipitation spread over approximately 16 days, contributing to an average humidity of 84%.

January Temperature in Castilho

In January in Castilho, the average temperature is 27°C (81°F), with maximums reaching 37°C (98°F) and minimums dipping as low as 21°C (69°F). This makes Castilho a perfect destination for travelers seeking warm sunny weather and enjoyable outdoor activities.

January Weather in Castilho: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Castilho, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castilho, January typically has an average temperature of 27°C (81°F), with highs reaching up to 37°C (98°F) and lows dropping to around 21°C (69°F).

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

January Precipitation in Castilho

In Castilho in January, the precipitation amount is 153 mm (6.0 in) over the course of 16 days.

January Precipitation Trends in Castilho

The chart displays monthly precipitation patterns in Castilho, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Castilho, January typically receives around 153 mm (6.0 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Castilho

In Castilho in January humidity is 84%. With an average temperature of 27°C (81°F), this humidity feels like walking through a warm, moist blanket, making travel uncomfortable and sticky, as every step seems to weigh you down with the heavy air.

January Average Humidity in Castilho

This chart illustrates the average monthly humidity levels in Castilho, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Castilho is approximately 84%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Castilho

In Castilho in January, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Castilho.

Maximum UV Index Levels in Castilho for January

The chart shows the monthly maximum UV Index (UVI) for Castilho in January, 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 January, the maximum UV index in Castilho typically reaches 15, which falls under the extreme exposure category.

Data source: Castilho January 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 January Weather in Castilho Compares to Other Months

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

This table compares monthly weather conditions in Castilho, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	153 mm (6.0 inches)	84%	extreme
February Weather	27°C (81°F)	132 mm (5.2 inches)	85%	extreme
March Weather	27°C (81°F)	109 mm (4.3 inches)	84%	extreme
April Weather	25°C (78°F)	46 mm (1.8 inches)	76%	extreme
May Weather	23°C (73°F)	42 mm (1.7 inches)	60%	very high
June Weather	22°C (73°F)	15 mm (0.6 inches)	48%	high
July Weather	21°C (71°F)	4 mm (0.2 inches)	44%	very high
August Weather	23°C (74°F)	17 mm (0.7 inches)	38%	very high
September Weather	27°C (81°F)	21 mm (0.8 inches)	33%	extreme
October Weather	27°C (81°F)	94 mm (3.7 inches)	31%	extreme
November Weather	27°C (81°F)	115 mm (4.5 inches)	62%	extreme
December Weather	27°C (81°F)	155 mm (6.1 inches)	82%	extreme