July weather forecast
Boa Vista, Brazil

Boa Vista's weather takes a slight turn in July. Although rainfall remains high at 204mm (8.03"), you will notice the mercury levels pushing back up to 30°C (86°F). The lower wind gusts, which go down to 9.1km/h (5.7mph), signpost the calming of the heavy rain period. July gives off a more balanced feel, with warmth slowly returning to the city.

Temperature

July's arrival in Boa Vista, Brazil, registers an average high-temperature of a hot 30°C (86°F), closely aligning with the temperature of the previous month. Throughout July, an average low-temperature of 22.1°C (71.8°F) is expected in Boa Vista.

Heat index

For most parts of July, the heat index is appraised at a fiery hot 39°C (102.2°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance 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.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

June and July, with an average relative humidity of 84%, are the most humid months in Boa Vista, Brazil.

Rainfall

In Boa Vista, during July, the rain falls for 29.3 days and regularly aggregates up to 204mm (8.03") of precipitation. In Boa Vista, during the entire year, the rain falls for 241.8 days and collects up to 1216mm (47.87") of precipitation.

Daylight

In Boa Vista, the average length of the day in July is 12h and 16min.
On the first day of July in Boa Vista, Brazil, sunrise is at 05:58 and sunset at 18:15. On the last day of the month, sunrise is at 06:01 and sunset at 18:16 -04.

Sunshine

With an average of 7.9h of sunshine, July has the least sunshine of the year.

UV index

January through May, July through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 7 in July transforms into this advice:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.