September weather forecast
Alagoa Grande, Brazil

September, the first month of the spring in Alagoa Grande, is still a warm month, with an average temperature fluctuating between 19.8°C (67.6°F) and 29.5°C (85.1°F).

Temperature

The start of September sees the average high-temperature at a still moderately hot 29.5°C (85.1°F), showing little difference from August's 28.5°C (83.3°F). In Alagoa Grande, September's nights observe an average temperature dip to an enjoyable 19.8°C (67.6°F).

Heat index

The heat index in September is evaluated at a fiery hot 36°C (96.8°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Records show heat index calculations are tailored for shaded regions and mild winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In September, the average relative humidity is 78%.

Rainfall

In Alagoa Grande, during September, the rain falls for 15.2 days and regularly aggregates up to 14mm (0.55") of precipitation. Throughout the year, in Alagoa Grande, there are 205.7 rainfall days, and 444mm (17.48") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of September in Alagoa Grande, sunrise is at 05:22 and sunset at 17:21. On the last day of the month, sunrise is at 05:07 and sunset at 17:17 -03.

Sunshine

In Alagoa Grande, the average sunshine in September 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 Alagoa Grande, Brazil. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 in September translates into this advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.