Cusco Weather in September
Cusco in September sees moderate daytime temperatures of 17°C (63°F) and nighttime lows of 4°C (39°F). Moderate rainfall is typical, with around 50 mm (2 in) for the month.
Rainfall in Cusco in September
Historically, September sees about 8 days of rain, with a monthly average of 50 mm (2 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Cusco in September
In September, expect moderate temperatures in Cusco, with highs of 17°C (63°F) and lows of 4°C (39°F) at night. Conditions are often most pleasant around the middle of the day. With overnight lows of 4°C (39°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Cusco in September
Expect a lot of sunshine this month, with about 195 hours of sun. These sunny conditions add to the overall experience.
Wind Speed in Cusco in September
Average wind speeds reach 3 m/s (6 knots) in September, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.If you prefer enjoying temperate temperatures and rain-free days, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Peru, check out our Cusco's climate page.
Cusco Temperature in September
Min Temperature
4°C (39°F)
Max Temperature
17°C (63°F)
Chance of Rain
27%
Precipitation
50 mm (2 in)
Rainy days
8 days
Humidity
56%
Windspeed
3 m/s (6 knots)
Sunshine
195 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cusco typically stay consistent throughout September, with daily highs averaging around 17°C (63°F). Nights are cold, with lows typically ranging from 4°C (39°F) to 7°C (45°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Cusco in September
Browse day-by-day weather records for Cusco spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cusco historical weather extremes in September
Based on 34 years of weather observations (1991-2025), these are the most extreme conditions recorded in Cusco.
- On September 22, 1994, temperatures climbed to 26°C (79°F), marking the warmest September day on record.
- The coldest September day was on September 27, 1996, with a maximum of 11°C (52°F).
- Cusco registered its coldest September night on September 1, 2012, with temperatures dropping to 0°C (32°F).
Best Places in Peru in September
Find out more about the weather in Peru and which places have the best travel conditions in this month. See all of Peru in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Cusco in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Cusco in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Peru, check out our Cusco's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Cusco climate overview or explore weather in Peru.
