September · Peru
Best time to visit Cusco in September Weather, crowds & prices
Weather in Cusco in September
Average temperature 12°C, 41 mm of rain, about 30 days with 6+ hours of sunshine and 65% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.1/10
Ranked #4 of 12 months
- Avg temp
- 12°C
- Rainfall
- 41 mm
- Humidity
- 65%
- Days with 6h+ sun
- 30
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Cusco scores 9.1/10 for sightseeing and cultural travel - an above-average month (#4 of 12). Expect around 12°C, 41 mm of rain, and roughly 30 days with 6+ hours of sunshine this month.
Inca stone streets and Sacred Valley day trips shine in the drier November-March window.
September ranks 4th of 12 for Cusco — one of the best windows
Expect 12°C (53°F) in September. A good month for city streets, viewpoints and long meals; leave swimming for another season.
With around 41 mm of rain, any showers tend to pass through rather than settle in; about 30 days with 6+ hours of sunshine and 12 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Cusco at 9.1/10 (4th of 12), just behind August at 9.2/10.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
Budget for peak pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Cusco in September?
- In September, Cusco averages 12°C, 41 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 Cusco?
- 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 Cusco in September?
- Expect about 41 mm of rain in September. Average humidity is 65% and there are about 30 days with 6+ hours of sunshine.
Curated in Cusco
Tickets & experiences
Things to do in Cusco
Cusco, Peru. Live activities and tours from GetYourGuide, matched to this destination.