May weather forecast
Porto Franco, Brazil

May, the last month of the autumn in Porto Franco, is another hot month, with an average temperature ranging between min 21.8°C (71.2°F) and max 30.8°C (87.4°F).

Temperature

As May takes its course, Porto Franco's average high-temperature registers at a still tropical 30.8°C (87.4°F), closely aligning with the preceding month. An average low-temperature of 21.8°C (71.2°F) is expected in Porto Franco, Brazil, during May.

Heat index

The heat index in May is computed to be a scorching 41°C (105.8°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. 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. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In May, the average relative humidity in Porto Franco is 81%.

Rainfall

In Porto Franco, in May, it is raining for 19.3 days, with typically 80mm (3.15") of accumulated precipitation. Throughout the year, there are 208.8 rainfall days, and 1007mm (39.65") of precipitation is accumulated.

Daylight

The average length of the day in May is 11h and 50min.
On the first day of the month, sunrise is at 06:10 and sunset at 18:03. On the last day of May, in Porto Franco, sunrise is at 06:14 and sunset at 18:00 -03.

Sunshine

In Porto Franco, the average sunshine in May is 8h.

UV index

March, May, July through October and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index, 7 during May, leads to the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.