Last updated: August 27, 2025
September in Lima, Peru offers a mild and refreshing climate, making it an appealing time for visitors. With maximum temperatures reaching 20°C (69°F) and an average hovering around 17°C (62°F), the weather is pleasantly warm. Nights cool down to a minimum of 14°C (57°F), providing a comfortable atmosphere for evening outings. Rain is minimal, with just 10 mm (0.4 in) recorded over a single day, allowing plenty of opportunities to explore the city. Humidity levels remain moderate at 53%, contributing to the crisp, invigorating feel of early spring in this vibrant coastal city. Whether you're strolling along the beach or enjoying Lima's renowned culinary scene, September's weather is sure to enhance your experience.
In September, Lima experiences a mild and slightly cool transition, mirroring the chill that begins to settle in as the year progresses. With minimum temperatures around 14°C (57°F) and a steady average of 17°C (62°F), the city remains pleasantly temperate. The daytime highs hover around 20°C (69°F), making it an ideal time for outdoor activities without the oppressive heat. It's noteworthy that this pattern continues from August, where temperatures are similarly mild, indicating the typical coastal climate of Lima. As the month unfolds, the city maintains its consistent weather, offering a comfortable environment that encourages both residents and visitors to explore its vibrant culture and stunning landscapes.
September in Lima, Peru, marks a continuation of the city's dry spell, with only 10 mm (0.4 in) of precipitation recorded, consistent with previous months like August and October. This minimal rainfall typically occurs across just one day, indicating that the city remains largely arid towards the end of winter. Fluctuations in precipitation become apparent as Lima transitions between the wetter months of January to March and the drier season that envelops the latter half of the year. The trend highlights the stark contrast between Lima's vibrant summer rains and its brief, almost imperceptible showers in the spring and fall, underscoring the region's unique climate.
In September, Lima, Peru experiences a notable transition in humidity, dipping to 53%. This marks a shift from the higher levels seen during the earlier months of the year, where humidity peaks at 90% in March. Following a gradual decline through the winter months, September presents a slight uptick compared to the summer’s lows of 50% in August. This trend highlights Lima's characteristic dry season, with humidity gradually increasing again as the year progresses towards the wetter months. As such, September serves as a bridge between the arid conditions of winter and the higher humidity levels expected in the fall, setting the stage for a more humid October ahead.
As September rolls into Lima, the UV Index reflects a continued pattern of intense sun exposure, registering an UV Index of 12—classified as extreme. This indicates a consistent level of harmful UV radiation that residents and visitors should take seriously, as the burn time remains a brisk 10 minutes. Following the trend from the previous months, notably August's UV Index of 11, September maintains its climate's challenging sun conditions, emphasizing the importance of sun protection measures. As the sunshine continues to shine bright, being aware of the risks and preparing accordingly is essential for enjoying Lima's beautiful outdoors safely. For more details on the UV Index levels throughout the year, check out Lima UV Index.
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September in Lima, Peru, continues the city's delightful trend of abundant sunshine, boasting 326 hours of bright daylight. This month follows a summer crescendo, peaking in August with 335 hours, and sets the stage for even more sunny days in October, which averages an impressive 340 hours. As spring unfolds, the sunshine is both a soothing balm and a refreshing invitation to explore Lima's vibrant scenery. The steady increase in daylight hours from May through October indicates an uplifting transition, where each day brings warmth and a chance to revel in the coastal city's Mediterranean allure. The rhythm of Lima's sunshine is not just numbers; it’s the pulse of life that enhances the city's charm during this radiant time of year.
In Lima, Peru, September marks a transitional period in the city's weather patterns, with a 41% chance of sunny days. As the winter months recede, the likelihood of basking in sunshine begins to dwindle, yet remains relatively steady compared to the preceding months. July and August showcase the highest probabilities of sun, peaking at 55% and 48% respectively. Following this peak, September maintains a decent share of bright skies, bridging the gap before the sun's presence further declines into the fall months of October and November, which see only 37% and 17% sunny chances, respectively. Therefore, visitors can still expect a fair mix of pleasant weather, positioning September as a promising opportunity to enjoy Lima's coastal charm.
As September arrives in Lima, Peru, the city welcomes a refreshing return to 12 hours of daylight, mirroring the long, sunlit days of January and February. This shift marks the end of the shorter daylight months that lingered through the winter, where daylight was reduced to about 11 hours from April to August. The gradual re-emergence of longer days not only signifies a change in the season but also invites residents and visitors alike to enjoy outdoor activities once again. Looking ahead, October through December will maintain this delightful balance of daylight, creating an ideal atmosphere for exploration and enjoyment in the vibrant coastal city.
As September arrives in Lima, Peru, the winds exhibit a gentle consistency, with an average speed of 3.0 m/s (7 mph). This slight decline from the peak in August, where winds reached 3.1 m/s (7 mph), suggests a subtle transition as the city shifts towards the end of winter. Over the months leading up to September, a notable increase in wind speed can be observed, particularly from May onward, when the winds started gaining strength. This trend not only marks the tail end of the drier season but also sets the stage for the breezy days of spring ahead. As the winds cradle the coast, they bring with them a refreshing embrace, inviting both locals and visitors to enjoy the vibrant atmosphere of Lima.
Weather in Lima varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lima, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is mild with temperatures averaging around 17°C (62°F), experiencing minimal precipitation of just 10 mm (0.4 in) and only one rainy day. The humidity levels are moderate at 53%, making it a comfortable time of year. In contrast, January brings warmer temperatures, ranging from a minimum of 17°C (64°F) to a maximum of 27°C (81°F), along with significantly higher precipitation at 47 mm (1.9 in) spread over 15 days. The humidity also increases dramatically to 89%, resulting in a much wetter and more tropical feel. For more details, you can check Lima weather in January.
September in Lima features mild temperatures, with averages around 17°C (62°F) and minimal precipitation, totaling just 10 mm (0.4 in) across only one rainy day. The humidity is relatively comfortable at 53%, making it a pleasant time to enjoy outdoor activities. In contrast, February brings a significant rise in temperatures, averaging 22°C (72°F) and reaching up to 28°C (82°F) during the day. However, this month is notably wetter, with precipitation of 53 mm (2.1 in) occurring over 12 days, and humidity levels soaring to 89%. The stark differences highlight September's dry, comfortable climate versus February's warm, humid conditions. For more details, you can check out Lima weather in February.
When comparing the weather in September and March, a noticeable contrast emerges. September typically features milder temperatures, with an average of 17°C (62°F) and a maximum of 20°C (69°F), accompanied by low humidity at 53% and minimal precipitation. In contrast, March showcases warmer temperatures, with an average of 22°C (72°F) peaking at 27°C (81°F). This month experiences significantly higher humidity at 90% and more frequent rainfall, totaling 50 mm (2.0 in) over 14 days. For a detailed overview of March weather in Lima, you can refer to Lima weather in March.
In September, the weather is generally mild, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 20°C (69°F) and an average of 17°C (62°F). The month sees minimal precipitation, at just 10 mm (0.4 in) over the course of one day, and relative humidity is a comfortable 53%. In contrast, April brings warmer temperatures, with a minimum of 15°C (60°F), an average of 20°C (69°F), and a maximum of 26°C (79°F). However, it also experiences higher precipitation, totaling 18 mm (0.7 in) spread across five days, and significantly increased humidity at 89%. For more detailed insights into April's weather, you can visit Lima weather in April.
In comparing the weather of September and May, September tends to be cooler, with average temperatures hovering around 17°C (62°F) and a maximum of 20°C (69°F), while May sees warmer conditions, with an average of 19°C (66°F) and highs reaching 25°C (78°F). Both months experience similar levels of precipitation, with September receiving about 10 mm (0.4 in) and May slightly less at 9 mm (0.4 in), each accumulating rain on just one day. Additionally, the humidity in May is notably higher at 83%, compared to September's more moderate 53%. For a closer look at the weather specifics during this time, check out Lima weather in May.
In comparing the weather between September and June, we find that both months experience similar temperatures, with September’s average temperature at 17°C (62°F) and June's slightly warmer at 18°C (64°F). June sees a higher maximum temperature of 21°C (71°F) compared to September's 20°C (69°F). Interestingly, while both months receive the same amount of precipitation at 10 mm (0.4 in), September has one rainy day, whereas June enjoys a dry spell with no recorded rainy days. Additionally, humidity levels are noticeably different, with June being more humid at 69%, compared to September's 53%. For more details, you can check Lima weather in June.
In comparing the weather between July and September, both months exhibit similar minimum and average temperatures, with July featuring a slightly higher maximum temperature of 21°C (69°F) compared to September's 20°C (69°F). July also boasts a dry spell with no recorded precipitation, while September experiences a small amount of rain, totaling 10 mm (0.4 in) over the course of just one day. Humidity levels are fairly consistent, with July at 56% and September at 53%. Overall, July presents slightly warmer and drier conditions than September. For more specific details about July's climate, you can check Lima weather in July.
In both September and August, the temperatures remain quite consistent, with minimums around 14°C (57°F), averages at 17°C (62°F), and maximums reaching 20°C (69°F). However, September experiences a slight increase in humidity at 53%, compared to August's 50%. While both months see the same amount of precipitation at 10 mm (0.4 in), September has recorded precipitation on 1 day, unlike August, which had no rainy days at all. For more detailed weather information, visit Lima weather in August.
September and October show some similarities in weather, but also distinct differences. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 20°C (69°F), with an average of 17°C (62°F). The month experiences minimal precipitation, with just 10 mm (0.4 in) falling over one day and a humidity level of 53%. In contrast, October sees slightly warmer temperatures, with a minimum of 14°C (58°F), an average of 17°C (63°F), and a maximum of 21°C (71°F). Precipitation increases to 10 mm (0.4 in) over two days, and humidity rises to 68%. For more details about the weather in October, you can check this link: Lima weather in October.
September and November showcase a transition in weather as the year progresses. In September, temperatures range from a minimum of 14°C (57°F) to a maximum of 20°C (69°F), with an average of 17°C (62°F) and relatively low humidity at 53%. Precipitation is minimal, averaging only 10 mm (0.4 in) over just one day. In contrast, November brings slightly warmer temperatures, with a minimum of 15°C (59°F) and a high of 23°C (74°F), leading to an average of 18°C (65°F). The humidity noticeably increases to 81%, and although precipitation remains low at 9 mm (0.4 in), it occurs over two days. These changes make November feel more humid and warmer compared to the more stable conditions of September. For more detailed insights, check out Lima weather in November.
In September, the weather shows a mild transition into the cooler months, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 20°C (69°F). This month experiences relatively low precipitation, with only 10 mm (0.4 in) over just one day, and humidity levels at a comfortable 53%.
In contrast, December welcomes summer in Lima, featuring warmer temperatures that range from a minimum of 16°C (62°F) to a maximum of 25°C (76°F) and a higher average of 20°C (68°F). Precipitation increases to 17 mm (0.7 in), occurring over three days, and humidity rises significantly to 87%, creating a more humid atmosphere. For a detailed look at December weather in Lima, check out Lima weather in December.
As September unfolds in Lima, the weather begins to shift subtly, with a mild average temperature making it one of the more comfortable months of the year. While the maximum temperatures are pleasantly warm, the occasional chill of early spring sets in, contrasting with the warmth of the peak summer months. With just a hint of rainfall—only one day of precipitation—the month stands out for its relative dryness, allowing residents and visitors alike to enjoy outdoor activities. The humidity remains moderate at 53%, making the air feel fresher than in the sweltering summer months. For those interested in a deeper dive into the seasonal patterns, visit Lima Climate to explore more about Lima’s unique weather phenomena.