Last updated: August 27, 2025
September in Puno, Peru is characterized by cool temperatures, with a maximum of 20°C (69°F) and an average of 10°C (50°F), dipping to a minimum of -3°C (27°F) at night. This transitional month brings approximately 60 mm (2.4 in) of rain over 11 days, contributing to the region's lush landscapes and vibrant colors. With an average humidity level of 67%, the crisp, refreshing air makes it an ideal time for travelers to explore the unique beauty and culture of this high-altitude city by Lake Titicaca.
In September, Puno experiences a refreshing shift in temperatures as the winter chill begins to wane. With minimums around -3°C (27°F) and maximums reaching 20°C (69°F), the climate is relatively mild, making it one of the more pleasant months in this high-altitude region. The average temperature of 10°C (50°F) offers a comfortable atmosphere for exploring the stunning landscapes and rich culture of the area. Notably, September marks a slight increase in daytime warmth compared to the colder preceding months, signaling the approach of spring and inviting visitors to enjoy outdoor activities under a clear sky.
In September, Puno, Peru experiences a notable uptick in precipitation, with 60 mm (2.4 in) of rain over approximately 11 days. This marks a significant change from the dry spells of the preceding months, particularly the meager rainfall recorded in June and July, where only a combined 19 mm fell. The arrival of spring in the Southern Hemisphere brings a gentle rejuvenation to the region, as September's rainfall lays the groundwork for the wetter months ahead. Looking ahead, October typically sees an increase to 92 mm (3.6 in), while November continues the trend with 87 mm (3.4 in), suggesting that September serves as a tipping point, transitioning Puno from its dry season into a more humid and agricultural-friendly climate.
As the seasons transition in Puno, Peru, September marks a notable shift in humidity levels, averaging 67%. This represents a slight increase from the drier months of July and August, where humidity plunged to 57% and 51% respectively. The post-winter revival brings a refreshing balance, but it’s still significantly lower compared to the heavy humidity of the earlier months, like January and February, which hover around an impressive 92%. As September unfolds, it serves as a reminder of the region's unique climate, bridging the drier summer and the return to more humid conditions in the following months.
In September, Puno, Peru, sees a UV Index of 16, maintaining its extreme exposure category, which denotes a consistent risk for skin damage with just 10 minutes of unprotected sun exposure. This month marks a return to a slightly elevated UV Index after a dip in August, showcasing the region's high-altitude sun intensity trend throughout the year. Interestingly, as the months transition from the cooler winter period, the UV levels begin to rise again, echoing patterns observed earlier in the year, such as January and February's peak UV Index of 19. With these hazardous levels persisting, it's essential to remain vigilant and protect your skin. For more information, please visit Puno UV Index.
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As September rolls into Puno, Peru, the sunlight continues to shine brightly, offering an impressive 343 hours of daylight. This marks a slight dip from the sunniest month of August, which boasted 347 hours, yet it remains among the top contenders for clear skies. The year showcases a captivating upward trend in daylight hours, with the sun gradually shining more brightly from January's relatively modest 265 hours to the peak in October at 352 hours. Each month builds upon the last, creating a warm and inviting atmosphere that enhances Puno's stunning landscapes and vibrant culture. With such glowing statistics, it's no wonder that September is a particularly cherished time for both locals and travelers to bask in the splendor of the Andes.
In Puno, Peru, the likelihood of sunny weather in September stands at a moderate 50%, marking a notable transition as the region moves away from the peak sunny months of July and August, which boast impressive probabilities of 81% and 78%, respectively. As winter recedes and spring approaches, the increased chance of sunshine in September suggests a comfortable balance. This month falls into a more uncertain forecast compared to the sunny heights of mid-year, but it still offers a good opportunity for those seeking to experience the unique beauty of Puno under clearer skies. Following September, the chance of sun begins to wane again, peaking in October at 41% into the often cloudier months ahead.
As September arrives in Puno, Peru, the city enjoys a delightful resurgence of daylight, basking in 12 hours of sunlight. This increase marks a shift following the extended 11-hour daylight of the previous months from April through August, where the sun sets on a more subdued schedule. The pattern reflects a harmonious rhythm of nature, as daylight gradually lengthens from the shorter days of mid-year to the equally generous hours that define October and November. As Puno transitions into the latter part of the year, residents can relish the balance of bright days, culminating in a peak of 13 hours of daylight by December, highlighting the region's unique position near the equator.
As September embraces Puno, Peru, the winds soften to an average speed of 2.6 m/s (6 mph), reflecting a blend of summer's gentle breezes and the approaching autumn's whispers. This slight dip follows a steady increase in wind speed from the winter months, where the winds began to pick up momentum in June and continued to build, peaking at 3.0 m/s in August. The return to calmer conditions in September hints at a transitional phase, where nature prepares for the cooler days ahead. As the year winds down, the gentle gusts remain a constant reminder of Puno's enchanting highland atmosphere.
Weather in Puno varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Puno, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinct contrasts in weather conditions. In September, temperatures range from a chilly minimum of -3°C (27°F) to a pleasant maximum of 20°C (69°F), with an average of 10°C (50°F). This month experiences moderate precipitation of 60 mm (2.4 in) over 11 days, accompanied by a humidity level of 67%. In contrast, January is milder, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 18°C (65°F), while maintaining the same average of 10°C (50°F). However, it has significantly higher precipitation, totaling 203 mm (8.0 in) spread across 24 rainy days and a notably higher humidity level of 92%. For a closer look at January weather specifics, you can refer to Puno weather in January.
September and February exhibit distinct weather patterns, reflecting the transitional phases of the year. In September, temperatures range from a chilly -3°C (27°F) to a milder max of 20°C (69°F), with an average of 10°C (50°F). The month receives about 60 mm (2.4 in) of precipitation over 11 days, with humidity levels at 67%. In contrast, February features milder temperatures, with a minimum of 2°C (35°F) and a maximum of 18°C (65°F), while maintaining the same average of 10°C (50°F). However, February experiences significantly higher precipitation at 234 mm (9.2 in) over 26 days and much higher humidity at 93%. For more detailed weather trends, check out Puno weather in February.
In comparing the weather between September and March, we see notable differences in both temperature and precipitation. September tends to be milder, with average temperatures around 10°C (50°F), a maximum of 20°C (69°F), and a relatively modest precipitation of 60 mm (2.4 in) spread over 11 days. In contrast, March experiences slightly warmer temperatures, with a minimum of 1°C (34°F) and a maximum of 17°C (62°F), but it is significantly wetter, receiving 218 mm (8.6 in) of rain over 29 days, leading to a much higher humidity level of 92%. This increase in moisture and precipitation makes March feel quite different than the more stable conditions of September. For a detailed look at the climate specifics, you can refer to Puno weather in March.
When comparing the weather in September and April, several notable differences emerge. September typically sees a wider temperature range, with a minimum of -3°C (27°F) and a maximum of 20°C (69°F), averaging around 10°C (50°F). In contrast, April has slightly milder temperatures, with a minimum of -1°C (30°F) and a maximum of 17°C (64°F), averaging 9°C (48°F). Additionally, September experiences less precipitation, averaging 60 mm (2.4 in) over 11 days, while April is wetter, with 90 mm (3.6 in) spread over 18 days. Humidity levels are also higher in April at 91%, compared to September's 67%. For more details, you can check Puno weather in April.
In September, the weather showcases a broader temperature range with a minimum of -3°C (27°F) and a maximum of 20°C (69°F), leading to an average of 10°C (50°F). This month experiences about 60 mm (2.4 in) of precipitation over 11 days, accompanied by a humidity level of 67%. In contrast, May has a slightly lower average temperature of 8°C (47°F), with similar extremes of -3°C (27°F) and 19°C (67°F). The precipitation in May is considerably less at 29 mm (1.1 in) over 8 days, paired with higher humidity at 87%. For a detailed look at May weather patterns, check out Puno weather in May.
In September, temperatures in Puno range from a minimum of -3°C (27°F) to a maximum of 20°C (69°F), with an average temperature of 10°C (50°F). This month also sees about 60 mm (2.4 in) of precipitation over approximately 11 days, resulting in a relatively humid atmosphere at 67%. In contrast, June experiences slightly cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 18°C (65°F), averaging 8°C (46°F). Additionally, June is much drier, receiving only 8 mm (0.3 in) of precipitation over just one day, but with a higher humidity level of 76%. For more details, you can check out Puno weather in June.
When comparing the weather in September and July, September tends to be milder, with average temperatures reaching 10°C (50°F) compared to July’s cooler 7°C (46°F). The maximum temperatures also rise slightly in September to 20°C (69°F), whereas July peaks at 19°C (66°F). Additionally, September experiences significantly more precipitation, totaling 60 mm (2.4 in) over 11 days, while July is much drier with only 11 mm (0.4 in) across just 2 days. Humidity levels are also higher in September at 67%, compared to July's 57%. For a closer look at July weather specifics, check Puno weather in July.
September tends to be slightly warmer than August, with an average temperature of 10°C (50°F) compared to August's 9°C (48°F). Both months experience similar maximum temperatures of 20°C (69°F), but September has a higher minimum temperature of -3°C (27°F), while August has a cooler minimum of -4°C (25°F). In terms of precipitation, September is significantly wetter, receiving 60 mm (2.4 in) over 11 days, compared to August's minimal 8 mm (0.3 in) across just 2 days. Additionally, September has higher humidity at 67%, whereas August sees a more comfortable 51%. For more detailed information, visit Puno weather in August.
September and October exhibit notable differences in weather patterns. While September experiences a minimum temperature of -3°C (27°F) and a maximum of 20°C (69°F), October sees slightly warmer temperatures with a minimum of -2°C (29°F) and a maximum of 23°C (74°F). Both months average around 10°C (50°F), but October tends to be wetter, receiving 92 mm (3.6 in) of precipitation over 16 days compared to September's 60 mm (2.4 in) over 11 days. Additionally, humidity increases from 67% in September to 77% in October, contributing to a more humid atmosphere. For more detailed insights, check out Puno weather in October.
In September, the weather is characterized by cooler temperatures, with a minimum of -3°C (27°F) and an average of 10°C (50°F), while the maximum reaches up to 20°C (69°F). Precipitation is moderate, totaling 60 mm (2.4 in), spread over about 11 days, and the humidity averages around 67%. In contrast, November experiences slightly milder temperatures, with minimums at 2°C (36°F), averages of 12°C (53°F), and maximums peaking at 22°C (71°F). However, it also sees increased precipitation of 87 mm (3.4 in) over 17 days, and higher humidity levels at 85%. For more details, you can check out the full information here: Puno weather in November.
In September, the weather is relatively mild with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 20°C (69°F), averaging around 10°C (50°F). The month sees about 60 mm (2.4 in) of precipitation over 11 days, coupled with a moderate humidity level of 67%.
In contrast, December experiences slightly warmer temperatures, with a minimum of 2°C (36°F) and a maximum of 21°C (70°F), averaging 11°C (51°F). However, it also brings significantly higher rainfall, totaling 188 mm (7.4 in) over 24 days, and a much higher humidity level of 90%. For more detailed information, visit Puno weather in December.
As September unfolds in Puno, the weather begins to transition, showcasing a unique blend of crisp temperatures and notable humidity. Unlike the warmer months of high summer, September presents a cooler climate with maximums around 20°C, giving residents and visitors alike a refreshing respite. Rainfall is more frequent, with about 11 days of precipitation, contributing to the month’s total of 60 mm. This marks a shift from the drier winter months, as the increased humidity hovers around 67%, creating a vibrant atmosphere ideal for experiencing Puno's rich culture. For a deeper dive into Puno's climate throughout the year, explore Puno Climate.