Climate and monthly weather forecastIquitos, Peru

The climate of Iquitos

According to the Köppen-Geiger Climate Classification system, the prevalent climate in Iquitos, Peru is identified as "Af," or a Tropical Rainforest climate. This type of climate is characterized by heavy rainfall and consistently high temperatures throughout the year. The city's weather parameters illustrate a uniform climate with small variations in temperature and rainfall.

Temperatures in Iquitos range from a low average of 20.8°C (69.4°F) to a high average of 33.3°C (91.9°F), presenting a warm and humid atmosphere year-round. The relative humidity stays within the 77% to 89% range, contributing to the tropical perception of the region. Despite a fairly steady temperature range, the rainfall levels tend to fluctuate noticeably from month to month.

Rainfall reaches its peak in March with an average of 185mm (7.28") and drops to its lowest in August with a mean of 67mm (2.64"). However, even at its lowest, Iquitos experiences significant rainfall, setting the city firmly in the tropical rainforest climate. Daylight hours stay consistent throughout the year, hovering around the 12-hour mark, while sunshine hours per day reveal seasonal patterns, peaking at 8.4 hours in September and minimal at 5.7 hours in April and July.

The best time to visit Iquitos

The most suitable time to visit Iquitos depends largely on individual tolerance for rain. For those who prefer drier conditions, the period from July to September is ideal as these months record the lowest rainfall, with August being the driest month at 67mm (2.64"). Additionally, in August, the highest average temperature of the year at 32.4°C (90.3°F) can be expected, along with increased sunshine hours at 7.8 hours per day, delivering a warm and relatively dry period to enjoy outdoor activities.

The worst time to visit Iquitos

In contrast, the heaviest rainfall occurs from January to April, with March recording the highest average rainfall of 185mm (7.28"). The weather during this period can be quite unpredictable and may interrupt plans for sightseeing and other outdoor pursuits. Additionally, these months coincide with the lowest recorded sunshine hours, further reducing the likability of these months for travel.

Spring weather in Iquitos

Spring months in Iquitos extend from September through November. During this period, temperatures range from 21.9°C (71.4°F) to 33.3°C (91.9°F), providing warm and pleasant conditions suitable for outdoor activities. Rainfall averages from 80mm (3.15") to 120mm (4.72"), and while this marks the onset of the wetter season, the rainfall is still manageable for most visitors. These months also see a rise in sunshine hours, ranging from 7.7 to 8.4 hours per day, providing ample daylight for exploration.

Summer weather in Iquitos

December through February marks the summer season in Iquitos. This period sees temperatures ranging from 22°C (71.6°F) to 30.1°C (86.2°F). However, with average rainfall ascending from 158mm (6.22") to 161mm (6.34"), these months are also characterized by wet conditions. Despite higher rainfall, summer in Iquitos is mild compared to the incoming monsoon, making it a viable option for visitors who can handle a bit of rain.

Autumn weather in Iquitos

March to May is Iquitos's autumn season, which experiences a temperature range between 21.9°C (71.4°F) and 30.7°C (87.3°F). However, this period is also the wettest, with rainfall peaking at 185mm (7.28") in March. Despite the high rainfall, the temperature remains steadily warm. For visitors inclined towards a tropical, rain-drenched experience, these months would be ideal.

Winter weather in Iquitos

During the winter season, from June to August, temperatures average between 20.8°C (69.4°F) and 32.4°C (90.3°F). These months see a significant drop in rainfall, averaging between 67mm (2.64") and 115mm (4.53"). The decrease in rainfall and consistently high temperatures, particularly in August, create highly favourable conditions for visitors. With up to 7.8 hours of sunshine per day, this period is often considered the best time to visit Iquitos.

Weather in January

January ushers in the new year in Iquitos, Peru with climatological consistency. Slightly increased temperatures, marked by a maximum of 30.1°C (86.2°F) and minimum of 22.3°C (72.1°F), are seen as compared to December. The region experiences substantial rainfall alongside moderate humidity. Weather in January »

Weather in February

February's weather in Iquitos stays consistent, closely mirroring that of the preceding month, January. Minor fluctuations in temperature, humidity, and wind speeds are scarcely noticeable and do not drastically impact the overall weather. Weather in February »

Weather in March

Transitioning into March, Iquitos experiences peak rainfall - 185mm (7.28"), accompanied with 27.6 days of rainfall. The fluctuating conditions result in a marginally cooler atmosphere, although temperatures remain fairly high. Despite the heavy downpours, the city enjoys steady daylight and sunshine hours. Weather in March »

Weather in April

April emerges with a slight decrease in rainfall, paving the way for fewer rainfall days compared to March. Temperature patterns continue to fluctuate within the same comfortable range. Daylight hours, sunshine duration, along with UV index manifest little to no change from March's values. Weather in April »

Weather in May

Next on the calendar, May's weather in Iquitos reads less rainfall both in terms of volume and days, in contrast to April. The temperature continues its uniform oscillation within a predictable range. Indicative of the tropical weather, sunshine hours and UV index hold steady, ensuring an abundance of warmth. Weather in May »

Weather in June

June arrives with the onset of marginally cooler temperatures. Despite a further decrease in rainfall, the city still retains its tropical allure. Regular wind patterns and consistent pressures uphold the steady climate. Visibility remains steady, attributing to smooth daily routines in Iquitos. Weather in June »

Weather in July

July graces Iquitos with marginally reduced rainfall - 104mm (4.09"), in comparison to June's downpours. Consequently, humidity decreases, giving way to a drier atmosphere. Despite minor dips in temperature levels, the overall weather stays reliably tropical throughout the month. Weather in July »

Weather in August

August's weather in Iquitos greets locals with peak temperatures - a high of 32.4°C (90.3°F) and low of 21.4°C (70.5°F), despite lesser rainfall. It's the start of the driest period with been noticeably lower humidity. Steady sunshine, alongside longer daylight hours, add an extra touch of warmth to the city. Weather in August »

Weather in September

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. Weather in September »

Weather in October

October takes Iquitos back to familiar terrain with marginally high rainfall and humidity. The city continues to enjoy generous daylight and sunshine hours, adding warmth to the everyday life. Temperature parameters sway within the usual tropical range. Weather in October »

Weather in November

November in Iquitos witnesses an increased rainfall of 120mm (4.72") and 24.2 rainfall days, when compared to the previous month. Temperature patterns persist lightly high, ensuring a warm welcome to the holiday season. Sunshine hours drop little, but daylight hours remain consistent, lightening up the city with its tropical charm. Weather in November »

Weather in December

Breaking up November's trend, December brings forth lesser temperature fluctuations with greater rainfall of 173mm (6.81"). The weather remains tropical, with stable humidity, daylight, and sunshine hours building up to a heart-warming festive season. Weather in December »