January weather forecast
Boa Vista, Brazil

Boa Vista's New Year begins with moderately high temperatures, as it observed in January. As one of the hotter months, the highest temperature reaches up to 33.8°C (92.8°F) and the city experiences humidity of 59%. Notably, there's a moderate level of rainfall at 19mm (0.75"). While the sun does make a significant appearance, cloud coverage is at a partially cloudy 32%. The overall weather pattern combines warmth with an often cloudy atmosphere.

Temperature

January's beginning in Boa Vista signals an average high-temperature of a still hot 33.8°C (92.8°F), barely different from December's 33.2°C (91.8°F). Boa Vista's temperature drops to an average low of 24.3°C (75.7°F) during the nights of January.

Heat index

The heat index value during January is appraised at an extremely hot 41°C (105.8°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In January, the average relative humidity in Boa Vista, Brazil, is 59%.

Rainfall

January is the month with the least rainfall. Rain falls for 10.8 days and accumulates 19mm (0.75") of precipitation.

Daylight

The average length of the day in January in Boa Vista is 11h and 59min.
On the first day of the month, sunrise is at 06:07 and sunset at 18:05. On the last day of January, in Boa Vista, sunrise is at 06:16 and sunset at 18:16 -04.

Sunshine

In Boa Vista, the average sunshine in January is 8.7h.

UV index

The months with the highest UV index are January through May, July through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 7 in January translates into these instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.