September weather forecast
Marapanim, Brazil

The first month of the spring, September, is still a hot month in Marapanim, Brazil, with temperature in the range of an average low of 24.5°C (76.1°F) and an average high of 31.1°C (88°F).

Temperature

The arrival of September coincides with an average high-temperature of a still tropical 31.1°C (88°F), indicating a minimal shift from August's 31°C (87.8°F). Marapanim anticipates an average minimum temperature of 24.5°C (76.1°F) in the month of September.

Heat index

For September, the heat index is calculated to be a blistering 41°C (105.8°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

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

Rainfall

In September, the rain falls for 20.4 days. Throughout September, 51mm (2.01") of precipitation is accumulated. In Marapanim, during the entire year, the rain falls for 315.6 days and collects up to 2313mm (91.06") of precipitation.

Sea temperature

The months with the coldest seawater in Marapanim, Brazil, are September and October, with an average sea temperature of 28.4°C (83.1°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The average length of the day in September in Marapanim is 12h and 7min.
On the first day of September in Marapanim, sunrise is at 06:07 and sunset at 18:13. On the last day of the month, sunrise is at 05:57 and sunset at 18:04 -03.

Sunshine

In September, the average sunshine in Marapanim is 9.1h.

UV index

The months with the highest UV index are January, June through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.