September weather forecast
Caapiranga, Brazil

September, the first month of the spring in Caapiranga, is a very hot month, with temperature in the range of an average low of 23.8°C (74.8°F) and an average high of 35.5°C (95.9°F).

Temperature

Caapiranga's September weather reaches an average high of 35.5°C (95.9°F) and an average low of 23.8°C (74.8°F), making it the warmest month.

Heat index

September's heat index is estimated at a burning hot 48°C (118.4°F). Careful: Heat exhaustion and heat cramps are anticipated. With ongoing exertion, heatstroke becomes a possibility.
It is important to note that the heat index values are for shaded areas and light wind scenarios. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

With an average relative humidity of 62%, September is the least humid month.

Rainfall

In September, the rain falls for 14.7 days. Throughout September, 37mm (1.46") of precipitation is accumulated. In Caapiranga, during the entire year, the rain falls for 269.3 days and collects up to 1638mm (64.49") of precipitation.

Daylight

The average length of the day in September is 12h and 5min.
On the first day of the month, sunrise is at 06:03 and sunset at 18:06. On the last day of September, sunrise is at 05:50 and sunset at 17:58 -04.

Sunshine

With an average of 10h of sunshine, September has the most sunshine of the year.

UV index

February, June through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 7 in September leads to these recommendations:
Shield from overexposure. Defense against sun-related harm is required. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.