September · Chile
Best time to visit Antofagasta in September Weather, crowds & prices
Weather in Antofagasta in September
Average temperature 16°C, 0 mm of rain, about 28 days with 6+ hours of sunshine and 81% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.3/10
Ranked #7 of 12 months
- Avg temp
- 16°C
- Rainfall
- 0 mm
- Humidity
- 81%
- Days with 6h+ sun
- 28
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Antofagasta scores 9.3/10 for sightseeing and cultural travel - ranked #7 of 12. Expect around 16°C, 0 mm of rain, and roughly 28 days with 6+ hours of sunshine this month.
Antofagasta is a Pacific mining port on the Atacama edge-coastal boardwalks, foggy mornings, and desert day trips. Best window: cooler months from late autumn through early spring.
September in Antofagasta — one of the year's strongest windows (7th)
Temperatures hover around 16°C (60°F) — the kind of month where neither heat nor cold forces the schedule.
At just 0 mm for the month, rain will not shape your plans; you get about 28 days with 6+ hours of sunshine and 11.9 hours of daylight.
On our climate-comfort scale this is one of the strongest months of the year for Antofagasta at 9.3/10 (7th of 12), just behind January at 9.6/10.
Pack layers you can shed by midday plus one warm layer for the evening.
Budget for mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Antofagasta in September?
- In September, Antofagasta averages 16°C, 0 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 9.3/10.
- Is September a good time to visit Antofagasta?
- September earns a 9.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Antofagasta in September?
- Expect about 0 mm of rain in September. Average humidity is 81% and there are about 28 days with 6+ hours of sunshine.
Curated in Antofagasta
Tickets & experiences
Things to do in Antofagasta
Antofagasta, Chile. Live activities and tours from GetYourGuide, matched to this destination.