April weather forecast
Caucaia, Brazil

April, the same as March, in Caucaia, Brazil, is another tropical autumn month, with temperature in the range of an average high of 30°C (86°F) and an average low of 25.3°C (77.5°F).

Temperature

Caucaia experiences a subtle adjustment in high-temperatures to a still tropical 30°C (86°F) with the onset of April, maintaining near parity with March's 30.1°C (86.2°F). Caucaia's April nights witness minimal differential from the daytime temperatures, with averages of 25.3°C (77.5°F).

Heat index

The average heat index in April is evaluated at a fiery hot 37°C (98.6°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

April and May, with an average relative humidity of 79%, are the most humid months.

Rainfall

The month with the most rainfall is April, when the rain falls for 28 days and typically aggregates up to 180mm (7.09") of precipitation.

Sea temperature

The month with the warmest seawater is April, with an average sea temperature of 28.9°C (84°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

In April, the average length of the day in Caucaia is 12h and 2min.
On the first day of April, sunrise is at 05:36 and sunset at 17:40. On the last day of the month, sunrise is at 05:32 and sunset at 17:31 -03.

Sunshine

In Caucaia, Brazil, the average sunshine in April is 7.6h.

UV index

The months with the lowest UV index are March and April, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 6 during April leads to these advisories:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. 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. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Caution! Sand and water reflections can notably increase the UV radiation intensity.