July weather forecast
Teresina, Brazil

July marks the middle of the dry season in Teresina. The city enjoys relatively stable temperatures, reduced rainfall, and increased sunshine hours. The already minimal rainfall amount recorded in June drops further in July, reaching just 10mm (0.39"). The weather is less humid, making it more comfortable. July in Teresina, therefore, brings drier, sunnier, and less humid conditions, perfect for outdoor activities.

Temperature

July's onset in Teresina brings an average high-temperature of a still tropical 32.8°C (91°F), showing a minute difference from June's 31.8°C (89.2°F). Teresina records an average nighttime low of 22°C (71.6°F) in July.

Heat index

The average heat index in July is calculated to be a fiery hot 38°C (100.4°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in July is 58%.

Rainfall

In Teresina, in July, it is raining for 6.7 days, with typically 10mm (0.39") of accumulated precipitation. In Teresina, during the entire year, the rain falls for 207.4 days and collects up to 1348mm (53.07") of precipitation.

Daylight

The average length of the day in July in Teresina is 11h and 52min.
On the first day of the month, sunrise is at 06:00 and sunset at 17:50. On the last day of July, in Teresina, Brazil, sunrise is at 06:00 and sunset at 17:54 -03.

Sunshine

In July, the average sunshine in Teresina is 7.4h.

UV index

January, March through December, with an average maximum UV index of 7, are months with the highest UV index in Teresina, Brazil. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In July, a daily UV index of 7 turns into the following recommendations:
Fend off overexposure. Sun protection is vital. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.