September weather forecast
Guarabira, Brazil

September, the first month of the spring in Guarabira, is also a moderately hot month, with an average temperature varying between 19.8°C (67.6°F) and 29.5°C (85.1°F).

Temperature

September registers an average high-temperature of a still moderately hot 29.5°C (85.1°F), slightly varied from August's 28.5°C (83.3°F). In the month of September, the average temperature dips to an enjoyable 19.8°C (67.6°F) during the night.

Heat index

For most parts of September, the heat index is computed to be a fiery hot 36°C (96.8°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. 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.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. 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. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In September, the average relative humidity in Guarabira is 78%.

Rainfall

In Guarabira, Brazil, in September, it is raining for 15.2 days, with typically 14mm (0.55") of accumulated precipitation. In Guarabira, during the entire year, the rain falls for 205.7 days and collects up to 444mm (17.48") of precipitation.

Daylight

The average length of the day in September in Guarabira is 12h and 4min.
On the first day of the month, sunrise is at 05:22 and sunset at 17:21. On the last day of September, sunrise is at 05:06 and sunset at 17:16 -03.

Sunshine

In September, the average sunshine is 6.3h.

UV index

March through September, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Guarabira. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 6 during September, leads to the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. 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. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.