Last updated: August 27, 2025
In Iquitos, Peru, May brings warm temperatures and high humidity, with daily averages hovering around 26°C (79°F). The month peaks with maximum temperatures reaching 33°C (92°F), while nighttime lows drop to a comfortable 20°C (69°F). However, visitors should be prepared for the widespread rainfall, as May sees an average of 230 mm (9.0 in) spread over 25 days, resulting in lush landscapes and vibrant biodiversity. With humidity levels averaging 91%, the atmosphere is thick and tropical, creating a distinctive experience for those exploring this Amazonian city.
In May, Iquitos, Peru, experiences mild temperatures, with minimums dipping to 20°C (69°F) and maximums reaching up to 33°C (92°F). This month marks a slight shift as the weather begins to cool slightly from the hotter April days, where maximums hit 35°C (95°F). Throughout May, the average temperature remains consistent at 26°C (79°F), reflecting the region's tropical climate. As the rainy season approaches, temperatures remain comfortable, making it an ideal time for exploration and experiencing the vibrant Amazonian culture without the extreme heat of the earlier months. Overall, May provides a pleasant window for visitors to soak in the lush surroundings of Iquitos while enjoying moderate warmth.
In May, Iquitos experiences a notable precipitation level with an average of 230 mm (9.0 in), continuing the region's trend of substantial rainfall as seen in previous months like March and April. Although the total amount of rainfall decreases slightly compared to April’s 309 mm (12.2 in), May maintains a consistent 25 rainy days, highlighting the persistent wet conditions characteristic of this time of year. This pattern is in line with the preceding months, setting the stage for the gradual transition to the drier season that follows in the latter half of the year. Overall, May marks a pivotal point in Iquitos' climate, where rainfall remains significant but starts to show signs of tapering off as the year progresses.
In May, Iquitos experiences its most humid month of the year, reaching a notable 91%. This rise from April's 86% marks a significant trend in the region's moisture levels as the rainy season intensifies. Following the peak of May, a gradual decline is observed, with June dropping to 85% and continuing into the cooler months of July and August, where humidity levels fall to 76% and 68%, respectively. Overall, this progression highlights the unique climatic shifts of Iquitos, where the warmth of May brings high humidity before transitioning into the drier months.
In May, Iquitos, Peru, experiences a UV Index of 14, indicative of extreme sun exposure with a quick burn time of just 10 minutes. This slight dip from the peak values of 16 in the preceding months signifies that while May remains a month for heightened caution, it offers marginally lower UV intensity compared to earlier in the year. Throughout the first half of the year, the UV Index consistently reflects extreme exposure levels, requiring residents and visitors alike to adopt protective measures. As June approaches, a further decrease to a UV Index of 12 is anticipated, yet the need for sun safety remains critical. For more details on UV exposure throughout the year, check out the full breakdown at Iquitos UV Index.
UV Risk Categories
May in Iquitos, Peru, marks a delightful turning point in the year as it basks in an impressive 248 hours of sunshine. This month heralds a gradual increase in daylight, following the steady climb from 234 hours in March and 232 hours in April. As the year progresses toward mid-year, the sunlight intensifies, with June then reaching a striking 263 hours, paving the way for the peak summer months of July and August, where hours of sunlight soar even higher. This upward trend not only highlights the vibrant climate of Iquitos but also invites locals and tourists alike to embrace the outdoors and celebrate the warm embrace of the sun.
In Iquitos, Peru, May marks a noteworthy increase in the likelihood of sunny weather, with the chance of sun rising to 21%—a significant jump from the preceding months. This brings a refreshing shift in the climate as the rainy season starts to ease, setting the stage for brighter days ahead. Following May, the sunshine potential holds steady at 21% in June, but is poised to soar in the heart of winter, peaking in July and August at 36% and 38%, respectively. This upward trend highlights May as the gateway to a sunnier season, inviting both locals and travelers to revel in the beauty of Iquitos' vibrant landscapes.
In Iquitos, Peru, daylight duration enjoys a consistent rhythm throughout the year. From January to April, the city basks in a generous 12 hours of daylight, promoting vibrant outdoor activities and an infectious energy. However, as May arrives, the days begin to shorten slightly, offering 11 hours of sunlight. This trend continues through June, July, and August, where the consistency of 11 hours persists, creating a subtle shift in the daily routine as residents adapt to the quieter, twilight hours. By September, daylight returns to 12 hours, heralding the onset of a more balanced cycle that remains stable through the rest of the year, reminding us of the natural ebb and flow that defines life in this Amazonian gem.
In Iquitos, Peru, the month of May continues a gentle breeze pattern that characterizes the region throughout the year, with an average wind speed of 1.2 m/s (3 mph). This consistent light wind is a hallmark of the local climate, reflecting only a slight decrease from the preceding months of April and March. As the seasons shift, the wind speeds remain rather stable, typically fluctuating between 1.2 m/s and 1.3 m/s across the year. This predictability in wind patterns, combined with the lush surroundings and tropical atmosphere, creates an inviting environment for both residents and visitors, perfect for leisurely exploration or serene moments by the waterways.
Weather in Iquitos varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Iquitos, focusing on differences in temperature, rainfall, humidity, and UV levels.
In May, the weather features temperatures ranging from a minimum of 20°C (69°F) to a maximum of 33°C (92°F), with an average of 26°C (79°F). The month is characterized by high humidity at 91% and significant rainfall, totaling 230 mm (9.0 in) over 25 days. In contrast, January experiences slightly warmer temperatures with a minimum of 21°C (71°F) and a maximum of 34°C (94°F), while maintaining the same average of 26°C (79°F). However, January has a higher precipitation of 255 mm (10.0 in) spread across 23 days, and notably lower humidity at 83%. For a more detailed look at January weather specifics, you can refer to Iquitos weather in January.
In comparing the weather between May and February, both months exhibit similar temperature ranges, with average temperatures around 26°C (79°F), and maximums peaking at 33°C (92°F). However, May tends to be slightly cooler at night, with a minimum temperature of 20°C (69°F), compared to February's 22°C (72°F). Precipitation is quite high in both months, with May receiving 230 mm (9.0 in) over 25 days and February recording 216 mm (8.5 in) across 24 days, indicating a similarly wet climate. One notable difference is the humidity level; May is more humid at 91%, while February maintains a lower humidity of 79%. For more insights on February weather, you can visit Iquitos weather in February.
May's weather features a comfortable average temperature of 26°C (79°F), with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 33°C (92°F). Despite its warm climate, May experiences significant rainfall, totaling 230 mm (9.0 in) over 25 days, and boasts high humidity levels at 91%. In contrast, March presents a slightly warmer overall profile with an average daily temperature of 26°C (79°F), but it can peak at a scorching 35°C (96°F). March also sees more precipitation, with total rainfall reaching 335 mm (13.2 in) across 28 days and a lower humidity level of 82%. For more details on the weather during this month, check out Iquitos weather in March.
When comparing the weather in April and May, there are some notable differences. In April, temperatures range from a minimum of 21°C (71°F) to a maximum of 35°C (95°F), making it slightly warmer overall. However, May has a lower maximum temperature of 33°C (92°F) but a similar average temperature of 26°C (79°F). Precipitation is also significant, with April receiving 309 mm (12.2 in) over 26 days compared to May's 230 mm (9.0 in) over 25 days. Additionally, May experiences higher humidity at 91%, while April's humidity is at 86%. For more detailed insights, you can check Iquitos weather in April.
May and June in Iquitos exhibit similar temperature ranges, with both months experiencing minimal temperatures around 20-21°C (69°F), average temperatures hovering at approximately 26°C (78-79°F), and maximums peaking at 33°C (92°F). However, May tends to be slightly wetter, with 230 mm (9.0 in) of precipitation over 25 days, compared to June's 222 mm (8.8 in) across 24 days. Additionally, June benefits from a drop in humidity to 85%, compared to May's higher level of 91%. For more detailed insights into June's weather, you can visit Iquitos weather in June.
In May, the weather tends to be warmer, with average temperatures reaching up to 26°C (79°F) and maximum highs of 33°C (92°F). This month also experiences significant rainfall, with 230 mm (9.0 in) of precipitation over 25 days, contributing to high humidity levels of 91%. In contrast, July sees slightly cooler conditions, with an average temperature of 25°C (78°F) and similar maxima of 33°C (92°F). The amount of rainfall decreases to 155 mm (6.1 in) over 19 days, and humidity levels drop to a more comfortable 76%. For more detailed weather information, check Iquitos weather in July.
In May, the weather is characterized by warmer temperatures, with a minimum of 20°C (69°F) and a maximum of 33°C (92°F). However, it also brings significant rainfall, with 230 mm (9.0 in) over 25 days, resulting in high humidity levels at 91%. In contrast, August experiences slightly cooler temperatures, with a minimum of 17°C (63°F) and a maximum of 34°C (94°F). Precipitation is notably lower, totaling 122 mm (4.8 in) over just 17 days, leading to a more comfortable humidity level of 68%. For more details, you can check Iquitos weather in August.
May and September both exhibit warm temperatures, with September showing slightly higher maximum values, peaking at 34°C (94°F) compared to May’s peak of 33°C (92°F). However, while the average temperature remains similar in both months, May is characterized by significantly higher humidity at 91%, making it feel more oppressive. Additionally, May experiences heavier rainfall with 230 mm (9.0 in) over 25 days, compared to September’s 176 mm (6.9 in) spread across 23 days. For more detailed insights into September's weather, check out Iquitos weather in September.
May and October in Iquitos present a notable contrast in weather patterns despite having similar average temperatures. In May, the minimum temperatures start at 20°C (69°F) and can reach highs of 33°C (92°F), accompanied by substantial rainfall of 230 mm (9.0 in) over 25 days and high humidity at 91%, creating a noticeably sultry atmosphere. In contrast, October features slightly warmer minimum temperatures at 22°C (71°F) but can peak at 35°C (95°F). The month sees a reduction in precipitation to 213 mm (8.4 in) across 24 days, along with a significant drop in humidity to 62%, resulting in a much drier and less oppressive environment. For more specific details, you can check Iquitos weather in October.
May and November both offer warm temperatures, but November tends to be slightly hotter with minimum temperatures averaging 22°C (72°F) compared to May's 20°C (69°F). Both months share a similar average temperature of 26°C (80°F), yet November reaches a higher maximum of 34°C (93°F) while May peaks at 33°C (92°F). In terms of precipitation, November receives a bit more rain, averaging 244 mm (9.6 in) over 25 days, compared to May’s 230 mm (9.0 in) with the same number of rainy days. Humidity levels are also lower in November at 76%, compared to May's high at 91%, making the latter feel more muggy. For a more detailed look at the weather in November, check out this Iquitos weather in November.
In May, the weather in Iquitos is characterized by warm temperatures, with a minimum of 20°C (69°F) and a maximum of 33°C (92°F), alongside an average temperature of 26°C (79°F). However, May experiences significant precipitation, totaling 230 mm (9.0 in) over approximately 25 days, leading to a high humidity level of 91%.
In contrast, December sees slightly warmer conditions, with temperatures ranging from a minimum of 22°C (73°F) to a maximum of 34°C (93°F), while maintaining the same average temperature of 26°C (79°F). December is also marked by increased rainfall, with 292 mm (11.5 in) spread over 27 days, and a slightly lower humidity of 87%. For a deeper dive into the climate specifics, check out Iquitos weather in December.
As May settles over Iquitos, the landscape transforms into a vibrant tapestry of lush greenery, fueled by the generous rainfall that accompanies the month. While temperatures remain relatively warm, May is characterized by elevated humidity levels, making it feel quite warm and occasionally stifling compared to the previous months. With an average temperature around 26°C and frequent rain showers, the city embraces a more tropical atmosphere, perfect for those who love the rain-soaked beauty of the Amazon. If you're looking to explore the unique climate dynamics of Iquitos, delve deeper into the details by visiting Iquitos Climate.