September weather forecast
Galinhos, Brazil

September, the first month of the spring in Galinhos, is still a tropical month, with temperature in the range of an average low of 22.2°C (72°F) and an average high of 34.7°C (94.5°F).

Temperature

The advent of September brings an average high-temperature of a still hot 34.7°C (94.5°F), almost identical to the preceding month. Nightly average temperatures in September reveal a significant dip from daytime highs in Galinhos, registering a consistent a pleasant 22.2°C (72°F).

Heat index

The heat index in September is calculated to be a blistering 42°C (107.6°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. 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. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

September and October, with an average relative humidity of 55%, are the least humid months.

Rainfall

In September, in Galinhos, the rain falls for 2.4 days. Throughout September, 3mm (0.12") of precipitation is accumulated. Throughout the year, in Galinhos, there are 112.4 rainfall days, and 381mm (15") of precipitation is accumulated.

Daylight

The average length of the day in September in Galinhos is 12h and 5min.
On the first day of the month, sunrise is at 05:24 and sunset at 17:25. On the last day of September, sunrise is at 05:10 and sunset at 17:19 -03.

Sunshine

September has the most sunshine of the year in Galinhos, with an average of 9.6h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Galinhos. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Galinhos. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Boost your sun resistance with garments that are densely woven yet spacious.