September weather forecast
Missão Velha, Brazil

The first month of the spring, September, is still a hot month in Missão Velha, Brazil, with an average temperature varying between 31.8°C (89.2°F) and 19°C (66.2°F).

Temperature

September records an average high-temperature of a still tropical 31.8°C (89.2°F), indicating a minor variation from the preceding month. Missão Velha registers a significant drop in temperature in September, with average nighttime lows of 19°C (66.2°F).

Heat index

Throughout September, the heat index is estimated at a torrid 35°C (95°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In September, the average relative humidity is 53%.

Rainfall

In Missão Velha, during September, the rain falls for 3.2 days and regularly aggregates up to 3mm (0.12") of precipitation. In Missão Velha, during the entire year, the rain falls for 162.1 days and collects up to 652mm (25.67") of precipitation.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of September, sunrise is at 05:36 and sunset at 17:35. On the last day of the month, sunrise is at 05:21 and sunset at 17:31 -03.

Sunshine

With an average of 9.6h of sunshine, September has the most sunshine of the year in Missão Velha.

UV index

The months with the highest UV index in Missão Velha are September through November, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 7 during September translates into the following guidance:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.