August weather forecast
Fortaleza, Brazil

Stepping into August in Fortaleza, expect to experience a drastic drop in rainfall, tapering to a mere 22mm (0.87"). While the temperature, humidity and daylight hours remain relatively constant, the sea temperature continues its gradual decline to 26.8°C (80.2°F). August stands out with an increase in the average sunshine hours to 9.5, making it the month with the highest sunshine average. The UV index sits at a high 11, requiring continued vigilance with sun protection. Soak in the sunny Fortaleza in August, blending the city's cultural spirit and natural beauty.

Temperature

Fortaleza observes a minor difference in average high-temperatures between July's 29.5°C (85.1°F) and August's 29.9°C (85.8°F). Nighttime temperature in Fortaleza experiences an average drop to an agreeable 22.7°C (72.9°F) in August.

Heat index

The average heat index in August is estimated at a fiery hot 36°C (96.8°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. 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. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In Fortaleza, the average relative humidity in August is 75.3%.

Rainfall

In August, the rain falls for 5 days. Throughout August, 22mm (0.87") of precipitation is accumulated. In Fortaleza, during the entire year, the rain falls for 135 days and collects up to 1608mm (63.31") of precipitation.

Sea temperature

In Fortaleza, the average seawater temperature in August is 26.8°C (80.2°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

In August, the average length of the day is 12h and 0min.
On the first day of the month, sunrise is at 05:41 and sunset at 17:39. On the last day of August, in Fortaleza, sunrise is at 05:32 and sunset at 17:35 -03.

Sunshine

The month with the most sunshine is August, with an average of 9.5h of sunshine.

UV index

In Fortaleza, Brazil, the average daily maximum UV index in August is 11. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index, 11 during August, leads to the following recommendations:
Undertake all key precautions, as unprotected skin and eyes may get burns in no time. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Frequent reapplication of a broad-spectrum SPF 30+ sunscreen is vital every two hours or directly after a swim or an outdoor workout. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.