January Weather in Fortuna, Brazil

Last updated: August 22, 2025

In January, the average temperature in Fortuna, Brazil is a warm 26°C (79°F). Temperatures can dip to a comfortable 21°C (69°F) or soar to a sizzling 34°C (94°F). Expect a precipitation amount of 169 mm (6.6 in) spread across 22 days, with an average humidity level of 90%, creating a lush and vibrant atmosphere.

January Temperature in Fortuna

In January in Fortuna, the average temperature is 26°C (79°F). Maximums can reach 34°C (94°F) and minimums can be as low as 21°C (69°F). This pleasant and warm climate makes Fortuna an ideal destination for travelers seeking sun-soaked adventures and outdoor activities.

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

The chart illustrates January temperature patterns in Fortuna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fortuna, January typically has an average temperature of 26°C (79°F), with highs reaching up to 34°C (94°F) and lows dropping to around 21°C (69°F).

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

January Precipitation in Fortuna

In Fortuna in January, the precipitation amount is 169 mm (6.6 in) spread over 22 days.

January Precipitation Trends in Fortuna

The chart displays monthly precipitation patterns in Fortuna, 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 Fortuna, January typically receives around 169 mm (6.6 inches) of precipitation spread over approximately 22 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 Fortuna

In Fortuna in January, humidity is 90%. With an average temperature of 26°C (79°F), this humidity feels like a warm, heavy blanket wrapping around you, making travel feel sticky and draining, while every step requires extra effort in the sweltering embrace of the moist air.

January Average Humidity in Fortuna

This chart illustrates the average monthly humidity levels in Fortuna, 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 Fortuna is approximately 90%, 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 Fortuna

In Fortuna 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 Fortuna.

Maximum UV Index Levels in Fortuna for January

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

Data source: Fortuna 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 Fortuna Compares to Other Months

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

This table compares monthly weather conditions in Fortuna, 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 (79°F)	169 mm (6.6 inches)	90%	extreme
February Weather	26°C (79°F)	220 mm (8.7 inches)	91%	extreme
March Weather	26°C (78°F)	253 mm (9.9 inches)	92%	extreme
April Weather	26°C (79°F)	169 mm (6.6 inches)	93%	extreme
May Weather	27°C (80°F)	47 mm (1.9 inches)	88%	extreme
June Weather	27°C (81°F)	6 mm (0.2 inches)	75%	extreme
July Weather	27°C (81°F)	4 mm (0.2 inches)	52%	extreme
August Weather	28°C (83°F)	2 mm (0.1 inches)	42%	extreme
September Weather	29°C (85°F)	7 mm (0.3 inches)	36%	extreme
October Weather	29°C (85°F)	32 mm (1.2 inches)	35%	extreme
November Weather	28°C (82°F)	92 mm (3.6 inches)	43%	extreme
December Weather	27°C (81°F)	134 mm (5.3 inches)	76%	extreme