Click on a day for an hourly weather forecast
The temperatures in Cusco in September are quite cold with temperatures between 6°C and 15°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Cusco. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Please note that Cusco can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Cusco in September 2025.
If you’re planning to visit Cusco in the near future, we highly recommend that you review the 14 day weather forecast for Cusco before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 14° / 6° | 23 | 8 | 1 | 226 mm | Ok | Cusco in January |
| February | 14° / 6° | 21 | 7 | 1 | 250 mm | Ok | Cusco in February |
| March | 14° / 5° | 24 | 6 | 2 | 204 mm | Bad | Cusco in March |
| April | 15° / 5° | 13 | 16 | 1 | 100 mm | Ok | Cusco in April |
| May | 14° / 4° | 8 | 21 | 2 | 52 mm | Bad | Cusco in May |
| June | 14° / 3° | 4 | 24 | 1 | 18 mm | Good | Cusco in June |
| July | 14° / 3° | 4 | 24 | 3 | 25 mm | Ok | Cusco in July |
| August | 15° / 4° | 5 | 25 | 2 | 31 mm | Ok | Cusco in August |
| September | 15° / 6° | 9 | 20 | 1 | 52 mm | Ok | Cusco in September |
| October | 15° / 7° | 14 | 17 | 0 | 113 mm | Ok | Cusco in October |
| November | 16° / 7° | 16 | 14 | 0 | 174 mm | Ok | Cusco in November |
| December | 14° / 7° | 21 | 10 | 0 | 208 mm | Ok | Cusco in December |