Cusco weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Fair
Best time to visit: April – December
What is the weather like in Cusco in September?
In September, Cusco is mild: daytime highs average 16 °C, and nights cool down to about 7 °C. Expect around 6 hours of sunshine a day. It rains often – on about 26 days, adding up to 183 mm. All in all, September is a so-so month for a holiday in Cusco.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 58 | 58 | 57 |
| Day | 16° | 16° | 17° |
| Night | 6° | 7° | 8° |
| Sun | 6 h | 6 h | 5 h |
| Rain days | 26 | 26 | 30 |
More details for September
- Daylight
- 12 h 0 min05:43 – 17:43
- UV index
- 14 · extremeclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 9 km/haverage daily peak
- Cloud cover
- 80 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC−5America/Lima
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %42 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Cusco in September: quick answers
Is Cusco hot in September?
No. In September, Cusco is mild: daytime highs average 16 °C and nights drop to about 7 °C.
Does it rain much in Cusco in September?
It rains often – on about 26 days, adding up to 183 mm.
Cusco month by month
The whole year in CuscoAll destinations: Peru
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)