September weather forecast
Altamira, Brazil

September, the first month of the spring in Altamira, is also a sweltering month, with an average temperature ranging between min 22.5°C (72.5°F) and max 35.8°C (96.4°F).

Temperature

With average high temperatures of 35.8°C (96.4°F) and lows of 22.5°C (72.5°F), September is the warmest month.

Heat index

During September, the heat index is evaluated at a burning hot 50°C (122°F). Remain cautious: Heat cramps along with heat exhaustion are foreseeable. Ongoing activity may precipitate heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. 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. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Altamira, the average relative humidity in September is 65%.

Rainfall

In September, in Altamira, Brazil, the rain falls for 11.7 days. Throughout September, 22mm (0.87") of precipitation is accumulated. In Altamira, during the entire year, the rain falls for 260.4 days and collects up to 1317mm (51.85") of precipitation.

Daylight

In September, the average length of the day in Altamira is 12h and 5min.
On the first day of the month, sunrise is at 06:27 and sunset at 18:30. On the last day of September, sunrise is at 06:14 and sunset at 18:22 -03.

Sunshine

In Altamira, the average sunshine in September is 9.3h.

UV index

June through December, with an average maximum UV index of 7, are months with the highest UV index in Altamira. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum UV index of 7 in September translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.