Last updated: August 27, 2025
In Cajamarca, Peru, September experiences a vibrant interplay of weather conditions that define the month. With a maximum temperature reaching 23°C (73°F) and an average of 12°C (54°F), the days are pleasantly warm, while cooler nights bring the minimum down to 5°C (42°F). This period also witnesses significant precipitation, totaling 154 mm (6.1 in) over approximately 18 days, contributing to a humidity level of 42% that adds a refreshing feel to the air. Whether you're exploring the lush landscapes or enjoying local culture, September's weather provides a unique backdrop for unforgettable experiences.
In Cajamarca, Peru, September sees a slight warming trend as the temperatures begin to shift towards the more pleasant conditions of spring. With minimums around 5°C (42°F) and maximums reaching 23°C (73°F), the month enjoys a comfortable average of 12°C (54°F). This stable temperature range, consistent with the preceding months, indicates that the cool, crisp air characteristic of the region persists. As September unfolds, the gradual rise in daytime warmth hints at the transition to the warmer months ahead, making it an inviting time to explore the rich culture and breathtaking landscapes Cajamarca has to offer.
In September, Cajamarca, Peru experiences a notable shift in precipitation patterns, with 154 mm (6.1 in) of rainfall spread over 18 days. This month marks a transitional period as the dry season begins to give way to the moist warmth of spring, reflecting a slight increase compared to the preceding dry months of July and August, which recorded only 43 mm and 47 mm respectively. While September's precipitation is still much lower than the peak seen in March, when the region received a substantial 599 mm (23.6 in) over 29 days, it sets the stage for the heavier rains that October and November generally bring. As such, September serves as a crucial bridge in Cajamarca's annual climate cycle, easing the tranquil dry spell into the more vibrant and verdant months ahead.
In Cajamarca, Peru, September marks a subtle transition in humidity levels as the dry season begins to wane. With humidity at 42%, this month continues the trend of declining moisture that started in July, where levels plummeted to their lowest at 44% and August saw an even drier average of 38%. While September remains relatively dry compared to earlier months, such as the peak in March at 88%, it also foreshadows a gradual rise in humidity in the following months, leading into October's 58%. This ebb and flow of moisture not only influences the local climate but also affects the vibrant landscapes and agriculture typical of the region throughout the year.
In September, Cajamarca experiences a UV Index of 17, maintaining its spot in the extreme exposure category. This marks a notable increase from the lower levels observed in the preceding months of June and July, which boasted indices of 13 and 14, respectively. As autumn approaches, residents and visitors alike should remain vigilant, as the consistent burn time of just 10 minutes emphasizes the need for protection against harmful UV rays. Following the trend, October is expected to see an even higher UV Index of 18, indicating that the intensity of sunlight continues to rise. For more insights and safety tips on UV exposure, check out Cajamarca UV Index.
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In Cajamarca, Peru, September shines with an impressive 311 hours of sunshine, marking a splendid transition between the dry and rainy seasons. This month continues a trend of abundant sunlight, following the peak sunshine months of July and August, which enjoy 333 and 335 hours, respectively. The overall annual progression shows a gradual increase in sunlit hours from the start of the year, culminating in May's 314 hours. As the year wanes, the sunshine hours begin to taper off, with October bringing 285 hours. September serves as a picturesque bridge, inviting both locals and travelers to bask in the vibrant warmth and golden hues before the cooler months ahead.
In Cajamarca, Peru, September marks a transitional moment in the weather pattern, with a 39% chance of sunny days. While this figure indicates a fair likelihood of sunshine, it reflects a notable dip from the peak sunny months of July and August, which enjoy chances of 69% and 48%, respectively. In contrast to the early part of the year, when the prospects of sun are particularly low—hovering around 10% to 16%—September offers a refreshing reprieve as the dry season makes its presence felt. As the region heads into the October rainy season, September stands out as one of the last months to embrace a balance of sunshine and cloud, making it an ideal time for outdoor activities before the skies turn grey again.
As autumn approaches in Cajamarca, Peru, September marks a notable transition in daylight duration. Throughout the year, the region enjoys a consistent 12 hours of daylight during the summer months of January, February, and March. However, as the dry season sets in, daylight hours dip to 11 hours from April through August, creating a subtle rhythm in the daily cycle. In September, the pattern shifts again, restoring the 12-hour daylight balance, which continues into October and beyond. This rhythmic oscillation in daylight not only enhances the natural beauty of Cajamarca but also fosters a vibrant atmosphere for outdoor activities and cultural celebrations.
As September ushers in the early hints of spring in Cajamarca, Peru, the wind picks up just a notch, averaging a gentle 1.4 m/s (3 mph). This moderate breeze marks a slight increase from the previous month and continues the trend observed since July when winds began to strengthen, peaking at 1.7 m/s (4 mph). The steady, soft whispers of wind throughout the year create an inviting atmosphere for both locals and visitors, enhancing the region's charm. With September's consistent conditions, it’s an ideal time to bask in the fresh air and enjoy the scenic beauty that this Andean city has to offer.
Weather in Cajamarca varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cajamarca, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is generally milder, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 23°C (73°F) and an average of 12°C (54°F). The month experiences significant rainfall, totaling 154 mm (6.1 in) over about 18 days, with humidity levels around 42%. In contrast, January sees slightly warmer temperatures, with a minimum of 6°C (42°F), an average of 12°C (54°F), and a maximum of 20°C (69°F). However, it is much wetter, with precipitation reaching 304 mm (12.0 in) across 24 days, resulting in a much higher humidity level of 83%. For more details, you can check Cajamarca weather in January.
September and February present contrasting weather conditions despite similar average temperatures of 12°C (54°F). In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 23°C (73°F), with relatively low humidity at 42% and 154 mm (6.1 in) of precipitation over 18 days. In contrast, February experiences a slightly cooler minimum temperature of 3°C (38°F) and a maximum of 21°C (70°F), but significant humidity rises to 81%, accompanied by a much higher precipitation total of 392 mm (15.4 in) over 26 days. For more details, check out Cajamarca weather in February.
Comparing the weather between September and March reveals some notable differences. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 23°C (73°F), with an average temperature of 12°C (54°F). The month experiences moderate precipitation of 154 mm (6.1 in) over 18 days, and humidity levels are relatively low at 42%. In contrast, March has slightly milder temperatures, with a minimum of 4°C (40°F) and a maximum of 21°C (69°F), averaging around 12°C (53°F). However, it is significantly wetter, with precipitation reaching 599 mm (23.6 in) over 29 days, leading to a much higher humidity level of 88%. For more details on March's weather, visit Cajamarca weather in March.
September and April present quite different weather patterns. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 23°C (73°F), with an average of 12°C (54°F). The month sees around 154 mm (6.1 in) of rainfall spread across about 18 days, with relatively low humidity at 42%. In contrast, April experiences slightly warmer temperatures, with a minimum of 6°C (43°F) and a maximum of 20°C (69°F), while maintaining the same average of 12°C (54°F). However, it is significantly wetter, with approximately 348 mm (13.7 in) of precipitation over 27 days and noticeably higher humidity at 85%. For more insights on April's weather specifics, visit Cajamarca weather in April.
In September, the weather features a mild temperature range with a minimum of 5°C (42°F) and a maximum of 23°C (73°F), averaging around 12°C (54°F). The month experiences moderate rainfall, totaling 154 mm (6.1 in) over approximately 18 days and a lower humidity of 42%. In contrast, May presents a somewhat cooler maximum temperature of 21°C (70°F) while maintaining the same minimum temperature of 5°C (41°F) and an average of 12°C (54°F). However, May sees increased precipitation, with 188 mm (7.4 in) spread across 24 days and a significantly higher humidity level of 78%. For a deeper understanding of this month’s climate, refer to Cajamarca weather in May.
In September, the weather is characterized by a wider temperature range, with minimums dipping to 5°C (42°F) and maximums reaching 23°C (73°F). In contrast, June has slightly cooler maximum temperatures, peaking at 21°C (71°F), while the minimum is just a degree lower at 4°C (39°F). Notably, September experiences much higher precipitation, totaling 154 mm (6.1 in) over 18 days, compared to June's 70 mm (2.8 in) across 12 days. Additionally, humidity levels in June are higher at 62%, while September's humidity is comparatively lower at 42%. For more details on June weather, you can check Cajamarca weather in June.
In comparing the weather between September and July, we observe a few notable differences. September experiences slightly warmer temperatures, with highs reaching up to 23°C (73°F), while July's maximum temperature is a bit cooler at 22°C (71°F). Both months share a similar average temperature of around 12°C (54°F). However, September is significantly wetter, with 154 mm (6.1 in) of precipitation over 18 days compared to July's much drier 43 mm (1.7 in) over just 8 days. Humidity levels are comparable, with September at 42% and July slightly higher at 44%. For more information about July weather, check out Cajamarca weather in July.
In comparing the weather between September and August, we see some notable differences. September experiences slightly cooler temperatures, with a minimum of 5°C (42°F), while August starts off a bit chillier at a minimum of 3°C (37°F). Both months have an average temperature of around 12°C (54°F), but August's maximum of 23°C (74°F) is marginally higher than September's max of 23°C (73°F).
One of the more significant distinctions is the precipitation; September sees a substantial increase in rainfall, recording 154 mm (6.1 in) over 18 days, compared to August's much lighter 47 mm (1.9 in) over just 9 days. This results in September being noticeably wetter and more humid, with humidity levels at 42%, while August has a slightly lower humidity of 38%. For a detailed look at the weather in August, you can visit Cajamarca weather in August.
September and October present noteworthy contrasts in weather patterns. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 23°C (73°F), with an average of 12°C (54°F). The month sees precipitation levels around 154 mm (6.1 in) over 18 days, contributing to a relatively dry humidity of 42%. In contrast, October experiences a slight drop in maximum temperatures, with highs reaching 21°C (71°F) and a minimal drop in lows to 4°C (40°F), while maintaining the same average temperature of 12°C (54°F). However, October is significantly wetter, recording 299 mm (11.8 in) of rainfall over 26 days, resulting in higher humidity levels of 58%. For a closer look at October's weather, you can visit Cajamarca weather in October.
September and November present distinct weather patterns. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 23°C (73°F), with an average of 12°C (54°F). This month experiences significant rainfall, with 154 mm (6.1 in) over 18 days and relatively low humidity at 42%. In contrast, November sees cooler minimum temperatures dropping to 0°C (33°F), while the maximums are slightly lower, peaking at 21°C (70°F) with the same average of 12°C (54°F). Precipitation increases considerably to 290 mm (11.4 in) across 23 days, accompanied by a rise in humidity to 69%. This shift signifies a transition into the wetter season, highlighting the importance of preparing for increased rainfall. For more specific information, check out Cajamarca weather in November.
September and December in Cajamarca present contrasting weather patterns. In September, temperatures range from a cooler minimum of 5°C (42°F) to a comfortable maximum of 23°C (73°F), with an average of 12°C (54°F). The month experiences moderate rainfall of 154 mm (6.1 in) over 18 days and a low humidity of 42%. In contrast, December sees slightly milder temperatures with a minimum of 3°C (38°F) and a maximum of 21°C (70°F), while the average remains the same at 12°C (54°F). However, this month is significantly wetter, receiving 413 mm (16.2 in) of precipitation over 26 days, and the humidity rises dramatically to 82%. For more detailed information, you can check Cajamarca weather in December.
As September rolls into Cajamarca, the weather presents a charming mixture of warmth and coolness that contrasts with the extremes of other months. While maximum temperatures can reach a pleasant 23°C (73°F), the average cools down to roughly 12°C (54°F), providing relief from the summer heat. This month also welcomes a notable amount of rainfall, with 154 mm (6.1 in) falling over around 18 days, enriching the lush landscapes that define the region. The humidity hovers around 42%, making the air feel fresh and invigorating. For those curious about Cajamarca’s unique climate and its seasonal variations, more information can be found at Cajamarca Climate.