Iquitos Weather in September
September in Iquitos typically sees daytime highs of 32°C (90°F) and nighttime lows of 23°C (73°F). September falls within the rainy season, so heavy rainfall is to be expected.
Rainfall in Iquitos in September
As part of the rainy season, Iquitos sees around 16 days of rain in September, with an average of 192 mm (7.6 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Iquitos in September
Iquitos in September gets highs of 32°C (90°F) during the day and drops to 23°C (73°F) at night. Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights are warm at 23°C (73°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Iquitos in September
The city usually sees around 215 hours of sunlight, indicating many sunny days despite it being the rainy season.
Wind Speed in Iquitos in September
Average wind conditions reach 1 m/s (2 knots) in September. This creates generally peaceful weather with subtle air movement. Remember this is an average: some days are windless while others have noticeable or very gentle breezes.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Iquitos. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Peru, check out our Iquitos's climate page.
Iquitos Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
32°C (90°F)
Chance of Rain
54%
Precipitation
192 mm (7.6 in)
Rainy days
16 days
Humidity
78%
Windspeed
1 m/s (2 knots)
Sunshine
215 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Iquitos typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 22°C (72°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Iquitos in September
Browse day-by-day weather records for Iquitos spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Iquitos historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Iquitos.
- The hottest September day on record in Iquitos reached 39°C (102°F) (September 11, 1991).
- The lowest daytime temperature in September was 19°C (66°F), recorded on September 17, 1980.
- The coldest night in September in Iquitos was on September 15, 1990, with a minimum of 15°C (59°F).
Best Places in Peru in September
Find out more about the weather in Peru and which places have the best travel conditions in this month. See all of Peru in September →
perfect weather
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What to Wear in Iquitos in September
Warm but pleasant conditions in Iquitos in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Iquitos in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Peru, check out our Iquitos's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Iquitos climate overview or explore weather in Peru.
