September weather forecast
Oriximiná, Brazil

The first month of the spring, September, is still a torrid month in Oriximiná, Brazil, with temperature in the range of an average high of 36.3°C (97.3°F) and an average low of 23.9°C (75°F).

Temperature

The introduction of September sees an average high-temperature of a still torrid 36.3°C (97.3°F), hardly deviating from August. Oriximiná registers a substantial downturn from daytime peaks throughout September nights, with an average low-temperature of 23.9°C (75°F).

Heat index

For September, the heat index is appraised at a burning hot 47°C (116.6°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Realize that the values for the heat index are set for shaded places and light winds. 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 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The least humid month is September, with an average relative humidity of 57%.

Rainfall

In Oriximiná, in September, it is raining for 12.4 days, with typically 24mm (0.94") of accumulated precipitation. Throughout the year, in Oriximiná, there are 255.8 rainfall days, and 1420mm (55.91") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 6min.
On the first day of the month, sunrise is at 06:40 and sunset at 18:45. On the last day of September, sunrise is at 06:29 and sunset at 18:37 -03.

Sunshine

The months with the most sunshine in Oriximiná are August and September, with an average of 9.7h of sunshine.

UV index

With an average maximum UV index of 8, September is the month with the highest UV index. A UV Index estimate of 8 to 10 represents a very high health risk from exposure to the Sun's UV radiation for average individuals.
Note: An average UV index of 8 in September transforms into this advice:
Without adequate protection, skin and eyes might suffer damage. Ensure precautions are in place. 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. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.