Weather in Cusco in September 2025
Average weather
Average temperature in Cusco in September
The temperature in September is +66°F on average, with a range between a maximum of +72°F during the day and a minimum of +39°F at night.
The average maximum temperature goes up 11% by the end of the month, compared with the beginning of the month, from +64°F to +68°F.
Is Cusco warm or cold in September?
Cusco is typically mild in September.
Maximum temperatures go up compared to the previous month from +63°F to +63°F. The minimum temperature also goes up from +39°F to +43°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Cusco:
Climate in Cusco in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +63°F | +63°F | +64°F | ||||
| Min. temperature | ||||||
| +27°F | +32°F | +32°F | ||||
| Max. temperature | ||||||
| +73°F | +72°F | +73°F | ||||
| Rainfall | ||||||
| 22 mm | 42 mm | 87 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 64% | 67% | 71% | ||||
| Air pressure | ||||||
| 1019 HPa | 1018 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 8 | 2 | 0 | ||||
| Cloudy days | ||||||
| 5 | 3 | 1 | ||||
| Rainy days | ||||||
| 18 | 25 | 29 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as good as in August. The temperature levels stay the same in the area of +63°F for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 22 mm to 42 mm. Humidity rises from 64% to 67%. The average wind speed doesn’t change much during September, staying around 1 m/s. The days becoming less sunny, going from 8 sunny days in August to 2 in September.
October brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 2 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Cusco is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Cusco?
Climate Change Over the Years
The climate in Cusco in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1985 (+58°F) and the highest in 2020 (+65°F). The driest year was 2022 with only 948 mm of rainfall, and the wettest year was 1985 with 1612 mm.
FAQ
Is September a good time to visit Cusco?
Can you sunbathe in Cusco in September?
Is Cusco rainy in September?
Is it sunny in Cusco in September?
Other cities in Peru
Monthly weather in Cusco
Source of the data
For this page, we’ve looked at the typical weather in Cusco, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.