Click on a day for an hourly weather forecast
The temperatures in Arequipa in September are usually low and can range between 10°C and 17°C.
There is little to no rain in Arequipa during September, so it’s a lot easier to explore the city. Just remember to dress in warm layers, as it can still get pretty chilly.
Our weather forecast can give you a great sense of what weather to expect in Arequipa in September 2025.
If you’re planning to visit Arequipa in the near future, we highly recommend that you review the 14 day weather forecast for Arequipa before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 14° / 8° | 10 | 22 | 0 | 159 mm | Ok | Arequipa in January |
| February | 13° / 8° | 12 | 16 | 0 | 202 mm | Bad | Arequipa in February |
| March | 13° / 8° | 9 | 23 | 0 | 135 mm | Bad | Arequipa in March |
| April | 14° / 8° | 5 | 25 | 0 | 75 mm | Good | Arequipa in April |
| May | 15° / 8° | 1 | 30 | 0 | 12 mm | Good | Arequipa in May |
| June | 14° / 7° | 0 | 30 | 0 | 7 mm | Good | Arequipa in June |
| July | 15° / 7° | 0 | 31 | 0 | 10 mm | Good | Arequipa in July |
| August | 16° / 9° | 0 | 31 | 0 | 7 mm | Good | Arequipa in August |
| September | 17° / 10° | 0 | 30 | 0 | 15 mm | Good | Arequipa in September |
| October | 17° / 11° | 1 | 30 | 0 | 26 mm | Good | Arequipa in October |
| November | 16° / 10° | 1 | 29 | 0 | 23 mm | Good | Arequipa in November |
| December | 15° / 10° | 4 | 27 | 0 | 71 mm | Good | Arequipa in December |