September weather forecast
Iquitos, Peru

Taking over from August, September maintains high temperature patterns, ensuring the tropical climate remains intact. However, this month sets itself apart with increased rainfall and a number of rainy days - 80mm (3.15") and 21.5 days respectively. As the season transitions, wind speeds and pressures adjust slightly to accommodate the changing climate. UV index and visibility figures align with the season's norms, ensuring the weather retains its consistency.

Temperature

With its high average temperature of 33.3°C (91.9°F) and a low of 21.9°C (71.4°F), September is regarded as the warmest month in Iquitos.

Heat index

September's heat index is calculated to be a burning hot 48°C (118.4°F). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.
Heat index details are generally centered around shaded locations and a mild breeze. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 77%.

Rainfall

In Iquitos, Peru, during September, the rain falls for 21.5 days and regularly aggregates up to 80mm (3.15") of precipitation. In Iquitos, during the entire year, the rain falls for 293.9 days and collects up to 1530mm (60.24") of precipitation.

Daylight

The average length of the day in September in Iquitos is 12h and 5min.
On the first day of September, sunrise is at 05:51 and sunset at 17:54. On the last day of the month, sunrise is at 05:38 and sunset at 17:47 -05.

Sunshine

The month with the most sunshine is September, with an average of 8.4h of sunshine.

UV index

August through October, with an average maximum UV index of 7, are months with the highest UV index in Iquitos. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.