Last updated: August 27, 2025
September in La Merced, Peru showcases a mild climate, with maximum temperatures reaching a pleasant 26°C (80°F) and averaging around 18°C (64°F) during the day. The nights can be cooler, dipping to a minimum of 10°C (51°F). Despite the relatively comfortable temperatures, the month is characterized by significant precipitation, totaling 86 mm (3.4 in) over 16 days, contributing to the region's lush greenery. With a humidity level of 40%, the atmosphere remains refreshingly pleasant, making September an intriguing time to experience the vibrant landscapes of La Merced.
In September, La Merced, Peru, experiences a delightful transition in temperatures, with minimums settling around 10°C (51°F), and daytime highs reaching a comfortable 26°C (80°F). This month marks a subtle rise from the cooler July and August, where temperatures hovered around the mid-teens. Despite the slight increase, the average temperature remains steady at 18°C (64°F), creating an inviting atmosphere for visitors and locals alike. As the season shifts, the pleasant warmth combined with cooler nights makes September an excellent time to explore the lush landscapes and vibrant culture of this enchanting region.
In September, La Merced experiences a notable transition in its precipitation patterns, receiving 86 mm (3.4 in) of rain over 16 days. This marks a slight uptick from the drier months of July and August, where rainfall was minimal, with only 60 mm (2.4 in) and 66 mm (2.6 in) respectively. September's precipitation signals the onset of the wetter season, as the region gears up for increased rainfall in the coming months, particularly in October and November, where averages leap to 166 mm (6.5 in) and 318 mm (12.5 in). This gradual rise offers a refreshing change after the dryness of mid-year, revitalizing the lush landscapes that define this vibrant area of Peru.
In September, La Merced, Peru, experiences a significant dip in humidity, dropping to a modest 40%. This marks a continuation of the dry trend that began in the previous months, with August already showcasing the lowest levels at 38%. As the year progresses, humidity levels generally oscillate, peaking in the first half at around 91% in January and dropping to their lowest point in the mid-year with July at 47%. The return of moisture begins in October, when humidity climbs back to 56%, setting the stage for a gradual increase leading into the wetter months of November and December. Overall, September represents a transitional period in La Merced's climate, bridging the dry spell of winter with the return of more humid conditions.
In September, La Merced, Peru, experiences a UV Index of 14, categorized as extreme, with a burn time of just 10 minutes. This month continues the trend of high UV levels, closely following the peaks observed from January to March, where the index consistently hit 17. As the seasons transition toward the end of the year, the UV Index dips slightly, yet remains significant, demonstrating the region's persistent sun intensity. Whether you're fishing, hiking, or simply enjoying the outdoors, it's crucial to stay protected. For more detailed insights, visit La Merced UV Index.
UV Risk Categories
September in La Merced, Peru, showcases a vibrant display of 310 sunshine hours, continuing the warm trend established in the preceding months. Following August's peak of 329 hours, this month marks a slight dip yet remains solidly above the year's average. The gradual increase from the cold winter months of May and June reflects the region's transition into its sun-drenched season. As we gaze upon the bright days of September, it's clear that La Merced's rich tapestry of sunshine not only illuminates the landscape but also invites exploration and outdoor adventures, making it a perfect time to experience the lush beauty of the area.
As September rolls into La Merced, Peru, the likelihood of sunny weather presents a refreshing contrast to the earlier months of the year. With a 36% chance of sunshine, this month marks a significant increase compared to the dreary days of winter. The trend clearly indicates a gradual rise in sunshine opportunities starting from the low percentages in the first half of the year, peaking in July and August with numbers over 50%. While September's sunshine potential does dip slightly from the summer months, it still offers a promising escape from the clouds, making it an appealing time for outdoor activities. As the year transitions into the wetter months ahead, September stands out as a delightful window of warmth and brightness.
As September unfolds in La Merced, Peru, residents and visitors alike can enjoy a generous 12 hours of daylight, marking a return to the balanced daylight seen during the earlier months of the year. Following a spell of consistent 11 hours from April through August, September heralds a shift back to longer days, reminiscent of the summer-like brightness of January through March. This seasonal rhythm showcases how La Merced experiences a harmonious cycle of light, with daylight gradually lengthening in the spring and returning to its full glory as autumn sets in. As the days grow brighter, September invites everyone to embrace the vibrant landscapes and outdoor activities that the region has to offer.
In September, La Merced experience a gentle breeze with an average wind speed of 1.1 m/s (3 mph), consistent with the light winds that have characterized the previous months. This slight uptick from the summer months, where speeds remained steady around 1.0 m/s, hints at the onset of seasonal changes in the region. As the year progresses, the winds maintain a tranquil quality, fostering a serene atmosphere perfect for enjoying the lush landscapes and vibrant culture of this enchanting Peruvian town. The consistent calmness throughout the year, punctuated by these subtle variations, creates an inviting environment that reflects the charm of La Merced.
Weather in La Merced varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in La Merced, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is generally mild, with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 26°C (80°F) and an average of 18°C (64°F). The month sees moderate precipitation, totaling 86 mm (3.4 in) over about 16 days, with humidity at a comfortable 40%. In contrast, January experiences slightly warmer temperatures, with a minimum of 12°C (54°F) and a maximum of 27°C (81°F), while still averaging 18°C (64°F). However, January is significantly wetter, with precipitation reaching 485 mm (19.1 in) over 24 days and considerably higher humidity at 91%. For more details on the weather during this time, you can visit La Merced weather in January.
In September, the weather is characterized by milder temperatures, with a minimum of 10°C (51°F) and a comfortable average of 18°C (64°F). The maximum temperature can reach up to 26°C (80°F), making it an ideal time for outdoor activities. However, this month sees significant rainfall, totaling 86 mm (3.4 in) over approximately 16 days, with a relatively lower humidity of 40%.
In contrast, February experiences slightly warmer temperatures, with a minimum of 13°C (56°F) and a similar average of 18°C (64°F). While the maximum temperature remains close at 26°C (79°F), February brings a much higher amount of precipitation, totaling 513 mm (20.2 in) across about 28 days. This increased rainfall is accompanied by high humidity levels of 90%, leading to a noticeably wetter and more humid atmosphere. For more detailed insights on the weather in this month, visit La Merced weather in February.
In comparing the weather of September and March, September tends to offer a milder climate with average temperatures around 18°C (64°F), while March sees a slight increase in minimum temperatures, starting at 12°C (54°F). Although both months have similar average temperatures, March experiences significantly higher precipitation, totaling 404 mm (15.9 in) across 29 days compared to September's 86 mm (3.4 in) over 16 days. This results in much higher humidity levels in March at 91%, compared to September’s 40%. For more details on March weather, you can refer to La Merced weather in March.
When comparing the weather in September and April, we notice some notable differences despite their similar average temperatures of 18°C (64°F). September typically experiences milder conditions with a minimum of 10°C (51°F) and a maximum of 26°C (80°F), while April starts slightly cooler at a minimum of 9°C (49°F) and reaches a similar maximum of 26°C (79°F). However, April is characterized by a significantly higher level of precipitation, averaging 236 mm (9.3 in) over 26 days, compared to September's 86 mm (3.4 in) over just 16 days. Additionally, humidity peaks in April at 89%, making it feel much more humid compared to the drier September, which sits at just 40%. For detailed information on weather specifics, check out La Merced weather in April.
In comparing the weather between September and May, several notable differences emerge. September typically enjoys a slightly warmer average temperature, ranging from a minimum of 10°C (51°F) to a maximum of 26°C (80°F), while May’s temperatures are slightly cooler, with a minimum of 8°C (46°F) and a maximum of 25°C (77°F). However, May experiences significantly higher precipitation, with 119 mm (4.7 in) falling over 24 days compared to September's 86 mm (3.4 in) across just 16 days. Additionally, the humidity level is noticeably higher in May at 85%, contrasting with September’s 40%. For more details on May's weather, you can visit La Merced weather in May.
When comparing the weather in September and June, September tends to be slightly warmer, with average temperatures reaching 18°C (64°F) compared to June's 17°C (63°F). September also enjoys a higher maximum temperature of 26°C (80°F), while June peaks at 25°C (77°F). However, June experiences higher humidity levels at 65%, compared to September's 40%, making it feel quite different despite the similar average temperatures. Additionally, both months see a comparable amount of precipitation, with June receiving 99 mm (3.9 in) and September getting 86 mm (3.4 in), each spread over 16 days. For more specific information on June weather in La Merced, you can visit La Merced weather in June.
In comparing the weather during September and July, September tends to be warmer with average temperatures reaching 18°C (64°F), peaking at 26°C (80°F), while July has a cooler average of 16°C (62°F) with a maximum of 24°C (76°F). Additionally, September experiences more rainfall, with 86 mm (3.4 in) of precipitation over 16 days, compared to July's 60 mm (2.4 in) falling over just 11 days. Humidity levels are also higher in July at 47%, compared to September's 40%. For a more detailed look, you can check La Merced weather in July.
September typically experiences slightly warmer temperatures compared to August, with average highs reaching 26°C (80°F) and lows around 10°C (51°F), while August's temperatures range from a minimum of 7°C (45°F) to a maximum of 25°C (77°F). Additionally, September sees an increase in precipitation, measuring 86 mm (3.4 in) over 16 days, compared to August's 66 mm (2.6 in) over 14 days. Humidity remains relatively similar, with September at 40% and August at 38%. For more detailed information, you can check La Merced weather in August.
September and October exhibit noticeable differences in weather patterns. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 26°C (80°F), with an average of 18°C (64°F). The month experiences 86 mm (3.4 in) of precipitation over 16 days, accompanied by relatively low humidity at 40%. Conversely, October sees slightly warmer temperatures, with a minimum of 11°C (51°F) and a maximum of 27°C (81°F), averaging 18°C (65°F). However, precipitation rises significantly to 166 mm (6.5 in) across 24 days, and humidity increases to 56%. For a more detailed look at October's weather, visit La Merced weather in October.
September and November exhibit some notable differences in weather patterns. While September offers mild temperatures ranging from a minimum of 10°C (51°F) to a maximum of 26°C (80°F) with an average of 18°C (64°F), November maintains similar high temperatures but starts at a slightly warmer minimum of 12°C (53°F). Precipitation levels, however, tell a different story; September receives 86 mm (3.4 in) over 16 days, contrasting sharply with November's significant increase to 318 mm (12.5 in) across 27 days. Additionally, humidity rises considerably in November to 76%, up from September's 40%, making the latter month feel notably drier. For a more detailed look at November weather specifically, you can visit La Merced weather in November.
The weather in September is generally milder, with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 26°C (80°F) and an average of 18°C (64°F). This month sees moderate precipitation levels of 86 mm (3.4 in) over approximately 16 days, with a relatively low humidity of 40%. In contrast, December experiences slightly higher nighttime temperatures, starting at a minimum of 13°C (57°F), while daytime highs remain similar at 26°C (79°F) and the average temperature is 18°C (65°F). However, December is significantly wetter, with heavy rainfall totaling 431 mm (17.0 in) over 29 days, leading to much higher humidity at 90%. For more detailed insights into December weather, you can check La Merced weather in December.
As September unfolds in La Merced, the transition towards more temperate conditions becomes evident. With average temperatures resting comfortably at 18°C, this month offers a refreshing respite from the hot summer months. However, it also ushers in a wetter phase, with precipitation recorded on nearly half the days, contributing to the lush greenery of the region. The relatively low humidity of 40% coupled with significant rainfall distinguishes September from the drier months, creating a unique blend of refreshing coolness and vibrant nature. To learn more about the shifting weather patterns throughout the year, explore La Merced Climate.