Climate averages 1991–2020

Iquitos weather
in October.

A hot, very wet month: the warmest and the 4th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 30.2°C Daytime mean, October
Average low 23.4°C Night-time mean, October
Rainfall 201 mm 26 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Iquitos · average highYear overview

October is a hot month in Iquitos: daytime highs average 30.2°C and nights cool to about 23.4°C. By daytime temperature it is the warmest month of the year.

Expect about 201 mm of rain on roughly 26 days, which makes October a very wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average October day.

The nearest other city in this atlas is San Juan, Peru (4 km away). In October its highs average 30.3°C, about as warm as Iquitos, with 201 mm of rain.

Among the 24 cities listed in Peru, Iquitos ranks joint 3rd of 24 for the warmest October highs and joint 21st of 24 for the driest October (rainfall, lowest first). The mean October high of those 24 cities is 23.6°C; Iquitos is 6.6°C warmer than that mean.

From October to November, average highs fall by 0.4°C to 29.9°C, and monthly rainfall rises from 201 mm to 235 mm.

The annual picture

October in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 20253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 3500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Iquitos climate table

1991–2020
Monthly climate averages for Iquitos, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 30.0°C23.4°C23.4°C25225.912.312 h
February 30.0°C23.4°C23.4°C23524.712.212 h
March 29.8°C23.4°C23.4°C30428.412.112 h
April 29.4°C23.2°C23.2°C29427.312.012 h
May 28.8°C22.9°C22.9°C27126.711.912 h
June 28.2°C22.3°C22.3°C21825.011.912 h
July 28.2°C22.0°C22.0°C16523.311.912 h
August 29.3°C22.4°C22.4°C15421.812.012 h
September 30.0°C23.0°C23.0°C17923.512.112 h
October, selected 30.2°C23.4°C23.4°C20125.812.212 h
November 29.9°C23.5°C23.5°C23525.812.312 h
December 29.9°C23.4°C23.4°C26327.212.312 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

October in nearby cities

Distance from Iquitos

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Iquitos) is explained once on the Iquitos year overview and on the Sources, method and limits page.

San Juan, Peru lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.