January Weather in Grajau, Brazil

Last updated: August 22, 2025

In Grajau, Brazil, the average temperature in January is a warm 26°C (80°F), with the mercury occasionally dipping to a minimum of 21°C (70°F) and reaching a maximum of 34°C (94°F). Expect a bit of rain, with 122 mm (4.8 in) of precipitation spread over 20 days, contributing to an average humidity level of 91%. This combination makes for a distinctly tropical feel, perfect for those who enjoy a lush and vibrant atmosphere!

January Temperature in Grajau

In January in Grajau, the average temperature is 26°C (80°F). Maximum temperatures can reach 34°C (94°F), and minimums can drop to as low as 21°C (70°F). This pleasant climate makes Grajau an ideal destination for travelers seeking warm weather and enjoyable outdoor activities.

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

The chart illustrates January temperature patterns in Grajau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grajau, January typically has an average temperature of 26°C (80°F), with highs reaching up to 34°C (94°F) and lows dropping to around 21°C (70°F).

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

January Precipitation in Grajau

In Grajau in January, the precipitation amount is 122 mm (4.8 in) over the course of 20 days.

January Precipitation Trends in Grajau

The chart displays monthly precipitation patterns in Grajau, 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 Grajau, January typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 20 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 Grajau

In Grajau in January, humidity is 91%. With an average temperature of 26°C (80°F), this humidity feels like a thick, heavy blanket wrapping around you, making travel feel sluggish and uncomfortable as you sweat with every step.

January Average Humidity in Grajau

This chart illustrates the average monthly humidity levels in Grajau, 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 Grajau is approximately 91%, 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 Grajau

In Grajau 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 Grajau.

Maximum UV Index Levels in Grajau for January

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

Data source: Grajau 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 Grajau Compares to Other Months

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

This table compares monthly weather conditions in Grajau, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	122 mm (4.8 inches)	91%	extreme
February Weather	26°C (80°F)	214 mm (8.4 inches)	91%	extreme
March Weather	26°C (79°F)	193 mm (7.6 inches)	91%	extreme
April Weather	27°C (80°F)	146 mm (5.8 inches)	94%	extreme
May Weather	27°C (81°F)	45 mm (1.8 inches)	89%	extreme
June Weather	27°C (81°F)	4 mm (0.2 inches)	80%	extreme
July Weather	27°C (81°F)	3 mm (0.1 inches)	66%	extreme
August Weather	28°C (83°F)	2 mm (0.1 inches)	53%	extreme
September Weather	29°C (84°F)	9 mm (0.4 inches)	46%	extreme
October Weather	29°C (84°F)	36 mm (1.4 inches)	45%	extreme
November Weather	28°C (82°F)	88 mm (3.4 inches)	53%	extreme
December Weather	27°C (82°F)	124 mm (4.9 inches)	82%	extreme