September · Peru
Best time to visit Arequipa in September Weather, crowds & prices
Weather in Arequipa in September
Average temperature 12°C, 24 mm of rain, about 30 days with 6+ hours of sunshine and 33% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.1/10
Ranked #9 of 12 months
- Avg temp
- 12°C
- Rainfall
- 24 mm
- Humidity
- 33%
- Days with 6h+ sun
- 30
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Arequipa scores 9.1/10 for sightseeing and cultural travel - ranked #9 of 12. Expect around 12°C, 24 mm of rain, and roughly 30 days with 6+ hours of sunshine this month.
Arequipa's white sillar stone buildings sit under the Misti volcano, gateway to Colca canyon.
September is one of the strongest months in Arequipa (9th)
September averages 12°C (53°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 24 mm of rain — occasional showers rather than washed-out days — alongside about 30 days with 6+ hours of sunshine and 11.9 daylight hours.
A 9.1/10 puts this among the year's best months in Arequipa (9th of 12); only November scores higher, at 9.6/10.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Arequipa in September?
- In September, Arequipa averages 12°C, 24 mm of rain, and about 30 days with 6+ hours of sunshine. Its climate-comfort score is 9.1/10.
- Is September a good time to visit Arequipa?
- September earns a 9.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Arequipa in September?
- Expect about 24 mm of rain in September. Average humidity is 33% and there are about 30 days with 6+ hours of sunshine.
Curated in Arequipa
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Arequipa, Peru. Live activities and tours from GetYourGuide, matched to this destination.