March weather forecast
Foz do Iguaçu, Brazil

March holds on to the warm summer weather, despite a slightly cooler and wetter shift from February. The rains somewhat intensify, with accumulated rainfall measuring 175mm (6.89"). The daylight hours start to reduce, mirroring the gradual transition towards autumn. However, high temperatures still dominate, making it quite conducive for water-related activities. The Foz do Iguaçu weather in March is a blend of lingering summer warmth and the onset of autumn rains.

Temperature

March brings an average high-temperature of a still hot 31.1°C (88°F), nearly identical to the preceding month. The month of March sees a significant daily temperature drop, recording an average low-temperature of 18.4°C (65.1°F).

Heat index

March's mean heat index is computed to be a blistering 42°C (107.6°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in March in Foz do Iguaçu is 82%.

Rainfall

In Foz do Iguaçu, in March, during 8 rainfall days, 175mm (6.89") of precipitation is typically accumulated. Throughout the year, in Foz do Iguaçu, there are 95 rainfall days, and 1869mm (73.58") of precipitation is accumulated.

Daylight

The average length of the day in March in Foz do Iguaçu, Brazil, is 12h and 14min.
On the first day of the month, sunrise is at 06:32 and sunset at 19:08. On the last day of March, sunrise is at 06:47 and sunset at 18:37 -03.

Sunshine

In Foz do Iguaçu, the average sunshine in March is 6.8h.

UV index

In Foz do Iguaçu, the average daily maximum UV index in March is 11. A UV Index value of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 11 during March leads to these advisories:
Adopt all important safety measures, unprotected skin may burn rapidly. 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. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Even on overcast days, a sunscreen with a sun protection factor of no less than 30 should be generously applied and reapplied, particularly after swimming or outdoor activities.