Last updated: August 21, 2025
September in Antofagasta, Chile ushers in the subtle transition from winter to spring, characterized by mild temperatures and a touch of humidity. With a maximum temperature reaching 17°C (63°F) and an average of 14°C (57°F), the days are pleasantly cool. Nights dip to a minimum of 11°C (52°F), providing a refreshing atmosphere. While this month sees 15 mm (0.6 in) of precipitation over 4 days, the overall weather remains relatively dry with 77% humidity. Such conditions make September a compelling time to explore the stunning landscapes and unique culture of this coastal city.
As September rolls in, Antofagasta, Chile experiences a gentle transition into spring, marked by cooler mornings and pleasantly mild afternoons. With minimum temperatures lingering around 11°C (52°F) and daytime averages hovering at 14°C (57°F), the city begins to shake off the winter chill. The maximum temperature tends to reach about 17°C (63°F), making it a great time for outdoor activities under the sunny skies. This month showcases a trend of gradually warming weather, hinting at the vibrant days ahead, while still retaining a crisp freshness that defines Antofagasta's coast.
In September, Antofagasta experiences a modest uptick in precipitation, with 15 mm (0.6 in) recorded over four rainy days. This marks a slight increase compared to the preceding months, as the region transitions from the drier winter season. Notably, while July and August see rainfall figures at 19 mm (0.8 in) and 13 mm (0.5 in) respectively, September illustrates a continued trend of light but consistent precipitation that sets the stage for the upcoming spring months. As the region gears up for a shift in climate, the steady rainfall contributes to the overall water supply, demonstrating the interplay between seasonal patterns and local ecology.
In September, Antofagasta experiences a slight rise in humidity, reaching 77%, following the drier months of July and August, which recorded low points at 77% and 75% respectively. This increase hints at the transition towards the end of the dry season, as humidity levels begin to stabilize. Interestingly, while September is not the most humid month—January and February boasting significant humidity at 83% and 84%—it marks a pivotal moment where the air starts to retain more moisture. This progressive shift is part of a gentle upward trend leading into the warmer months ahead, reflecting the region's unique climatic patterns. Overall, September serves as a bridge between the dry winter months and the wetter spring season, setting the stage for what's to come.
In September, Antofagasta experiences an UV Index of 11, classifying it within the extreme exposure category with a burn time of just 10 minutes. This marks a notable transition from the milder conditions of winter, as the UV Index begins to rise again after the colder months. Following the trend established from January to August, where the UV Index remained predominantly high, September continues this pattern, ultimately leading into the intense summer months ahead. As the sun's power ramps up, it's essential for residents and visitors alike to stay vigilant with sun protection. For a complete overview of UV Index trends throughout the year, visit Antofagasta UV Index.
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In Antofagasta, Chile, September basks in 341 hours of sunshine, marking a delightful transition into spring. This month stands out as a notable peak in daylight, closely mirroring the bright months of February and August. As the days begin to warm, September's sunshine lays the groundwork for the sunny surge that follows in October and November, where the hours climb to 372 and 376 respectively. Interestingly, after the cooler and slightly overcast months of winter, the sunshine steadily increases, indicating a vibrant seasonal shift and a promise of brighter days ahead for those reveling in the coastal beauty of Antofagasta.
In Antofagasta, Chile, the likelihood of sunny weather in September stands at 58%, marking a shift from the sunnier months of late summer. As the seasons transition, September experiences a modest dip in sunshine compared to August's 68%, yet it remains brighter than the following months. This trend indicates that while the sun may not shine as brightly as earlier in the year, it still casts a warm glow over the city, hinting at the gradual return of sunnier days as it approaches October, which boasts a 70% chance of sun. Overall, September serves as a bridge, maintaining a balance between lingering warmth and the encroaching autumn coolness.
In Antofagasta, Chile, the rhythm of daylight shifts gracefully throughout the year, showcasing a dynamic transition as the seasons change. September, standing at 11 hours of daylight, marks a return to longer days after the winter months, mirroring August's duration. This slight increase signals the beginning of spring, where daylight gradually lengthens from 10 hours in May and June. As the year progresses into October, the sun rises even more, extending to 12 hours, paving the way for the vibrant days of summer ahead. This pattern reveals an intriguing ebb and flow, where daylight reaches its peak of 13 hours in the height of summer, reflecting the region's diverse and shifting landscapes throughout the year.
As September arrives in Antofagasta, the wind begins to pick up, with an average speed of 3.3 m/s (7 mph), marking a slight increase from the calmer months of late winter. This seasonal shift indicates the region's transition towards spring, as the winds start to regain their momentum after reaching their lowest point in June. Interestingly, the wind patterns here reveal a gradual resurgence, peaking in November at 3.6 m/s (8 mph) before settling into a consistent rhythm as the year closes out. Thus, September serves as a refreshing reminder of the vibrant winds that Antofagasta will soon embrace, setting the stage for the lively breezes that characterize the upcoming months.
Weather in Antofagasta varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Antofagasta, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather tends to be cooler, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 17°C (63°F), accompanied by around 15 mm (0.6 in) of precipitation over four days, and a humidity level of 77%. In contrast, January experiences warmer conditions, with temperatures ranging from 16°C (61°F) to 23°C (74°F) and significantly less precipitation, averaging only 6 mm (0.2 in) across the entire month without any rainy days. The humidity slightly increases to 83% in January, but overall, the climate feels much more pleasant compared to the cooler and wetter September. For more detailed information, you can check out Antofagasta weather in January.
September and February showcase distinct weather patterns in Antofagasta. In September, temperatures range from a cool 11°C (52°F) at night to a comfortable 17°C (63°F) during the day, with an average temperature of 14°C (57°F). This month experiences about 15 mm (0.6 in) of precipitation over four days, coupled with a humidity level of 77%. In contrast, February enjoys warmer conditions with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 23°C (73°F), averaging 19°C (66°F). Notably, February is drier, receiving only 4 mm (0.2 in) of precipitation, and boasts no rainy days, with a slightly higher humidity of 84%. For more detailed insights, you can check Antofagasta weather in February.
When comparing the weather in September and March, March tends to be noticeably warmer. In March, temperatures range from a minimum of 14°C (58°F) to a maximum of 23°C (73°F), with an average of 18°C (65°F). In contrast, September features cooler temperatures, with a minimum of 11°C (52°F) and a maximum of 17°C (63°F), averaging at 14°C (57°F). Additionally, March experiences less precipitation, with only 10 mm (0.4 in) over one day, compared to September's 15 mm (0.6 in) over four days. The humidity is slightly higher in March at 84%, versus September's 77%. For more detailed information, you can check Antofagasta weather in March.
In comparing the weather between September and April, September tends to be cooler with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 17°C (63°F), while April experiences slightly warmer conditions, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 20°C (68°F). Additionally, September has less precipitation, totaling 15 mm (0.6 in) over 4 days compared to April's 18 mm (0.7 in) spread over 6 days. Humidity levels are also higher in April at 83%, compared to 77% in September. For more specific details, you can check Antofagasta weather in April.
In comparing the weather of September and May, one can observe that September typically features cooler temperatures with a minimum of 11°C (52°F) and a maximum of 17°C (63°F), while May experiences slightly warmer conditions, with a minimum of 12°C (55°F) and a maximum of 20°C (69°F). Precipitation is slightly higher in May, averaging 18 mm (0.7 in) over 7 days, compared to September's 15 mm (0.6 in) over just 4 days. Additionally, both months experience high humidity, with September at 77% and May slightly higher at 80%. For more detailed information on May weather, visit Antofagasta weather in May.
When comparing September and June weather, we can see some distinct differences. September typically has slightly cooler temperatures, with a minimum of 11°C and a maximum of 17°C, while June sees warmer conditions with a minimum of 12°C and a maximum of 21°C. Precipitation is somewhat similar, with September averaging 15 mm over 4 days compared to June's 17 mm over 6 days. Both months experience high humidity, with September at 77% and June slightly higher at 79%. For more detailed information, you can view Antofagasta weather in June.
In comparing the weather conditions of September and July, we observe some notable differences. Both months share similar minimum and average temperatures, with September reaching a maximum of 17°C (63°F) compared to July's 19°C (66°F). Precipitation is slightly lower in September, with 15 mm (0.6 in) falling over four days, whereas July sees 19 mm (0.8 in) spread across seven days. Despite these variations, both months maintain a consistent humidity level of 77%. For more detailed weather insights, you can check the Antofagasta weather in July.
In comparing the weather patterns of September and August, we notice subtle variations. Both months have a similar minimum temperature of 11°C (52°F) and an average temperature of 14°C (57°F). However, August tends to be warmer overall, with a higher maximum temperature of 19°C (67°F), compared to September's maximum of 17°C (63°F). Precipitation levels are quite comparable, with September receiving 15 mm (0.6 in) over 4 days and August slightly less at 13 mm (0.5 in) also over 4 days. Humidity is slightly higher in September at 77%, compared to 75% in August. For a more detailed look at the weather in August, you can check out Antofagasta weather in August.
In comparing the weather of September and October, both months exhibit remarkably similar temperature ranges, with average temperatures around 14°C (57°F) and daily highs reaching up to 17°C (63°F). However, October sees a slight increase in minimum temperatures, averaging 12°C (53°F) compared to September's 11°C (52°F). Precipitation levels also differ slightly, with September receiving 15 mm (0.6 in) over 4 days, while October experiences a reduction to 12 mm (0.5 in) over just 2 days, indicating drier weather. Humidity remains consistent at 77% in both months, lending a similar feel to the air. For more details on October weather specifics, visit Antofagasta weather in October.
In September, the weather tends to be slightly cooler with an average temperature of 14°C (57°F) and a maximum of 17°C (63°F). This month experiences more frequent precipitation, averaging 15 mm over four days, coupled with a humidity level of 77%. In contrast, November sees a minor increase in temperature, featuring a minimum of 13°C (56°F) and an average of 15°C (60°F), with maximums reaching 19°C (66°F). Interestingly, November has significantly less rainfall, with only 11 mm falling over just one day, and humidity rises marginally to 79%. For more detailed insights, check out Antofagasta weather in November.
In September, Antofagasta experiences cooler temperatures with a minimum of 11°C (52°F) and an average of 14°C (57°F), while December warms up slightly, featuring a minimum of 14°C (58°F) and an average of 17°C (63°F). September sees more precipitation, totaling 15 mm (0.6 in) over 4 days, compared to the drier December, which has only 8 mm (0.3 in) and no rainy days. Both months have similar humidity levels, around 77% in September and 78% in December, contributing to a comfortably mild climate. For more details about December in Antofagasta, you can visit Antofagasta weather in December.
As September unfolds in Antofagasta, the weather begins to shift, offering a refreshing transition from the chill of winter to the crispness of spring. This month typically brings milder temperatures compared to the colder winter months, with averages hovering around 14°C (57°F). However, the occasional warmth is tempered by increased humidity and a modest amount of rainfall, seen as a few scattered showers over about four days. This blend of temperatures and moisture not only enriches the landscape but also marks a welcome change, making it an ideal time for both locals and travelers to explore the vibrant surroundings. For more on how these climatic patterns shape your visit, check out Antofagasta Climate.