Weather in Iquitos in September 2025
- September is usually the driest month of the year in Iquitos
Average weather
Average temperature in Iquitos in September
The temperature in September is +33°C on average, with a range between a maximum of +36°C during the day and a minimum of +22°C at night.
The average maximum temperature goes down 14% by the end of the month, compared with the beginning of the month, from +34°C to +32°C.
Is Iquitos warm or cold in September?
Iquitos is typically hot in September.
Maximum temperatures go up compared to the previous month from +30°C to +31°C. The minimum temperature also goes up from +22°C to +23°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
September is one of the warmest months in Iquitos, here is the comparison with other months:
Climate in Iquitos in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +30°C | +31°C | +31°C | ||||
| Min. temperature | ||||||
| +17°C | +17°C | +20°C | ||||
| Max. temperature | ||||||
| +35°C | +36°C | +37°C | ||||
| Rainfall | ||||||
| 151 mm | 176 mm | 205 mm | ||||
| Wind | ||||||
| 0 m/s | 0 m/s | 0 m/s | ||||
| Humidity | ||||||
| 86% | 85% | 86% | ||||
| Air pressure | ||||||
| 1012 HPa | 1011 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 2 | 1 | 1 | ||||
| Rainy days | ||||||
| 28 | 27 | 28 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting warmer as September arrives. The average maximum temperature goes up from +30°C to +31°C during the day. Prepare for more rain. Average rainfall goes from 151 mm to 176 mm. It feels drier, as humidity decreases from 86% to 85%. The average wind speed doesn’t change much during September, staying around 0 m/s. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 1 m/s getting up to 2 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Iquitos is gradually increasing during September, going from 1 m/s to 1 m/s over the course of the month.
Rain
How was the weather last September in Iquitos?
Climate Change over Years
The climate in Iquitos in September has not changed much over the last 43 years.
The average temperature was the lowest in 1986 (+29°C) and the highest in 2024 (+31°C). The driest year was 2004 with only 2322 mm of rainfall, and the wettest year was 1986 with 3355 mm.
FAQ
Is September a good time to visit Iquitos?
Can you sunbathe in Iquitos in September?
Is Iquitos rainy in September?
Is it sunny in Iquitos in September?
Other cities in Peru
Monthly weather in Iquitos
Source of the data
For this page, we’ve looked at the typical weather in Iquitos, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
