Arequipa in September
In September, Arequipa averages 23°C (74°F) during the day and 10°C (49°F) at night, with only about 0 rainy days.
High seasonConditions are comfortable for sightseeing without being sweltering. Skies are generally dry and clear.
September is a great month to visit Arequipa: pleasant temperatures and relatively few wet days.
How September compares to the rest of the year in Arequipa
September is one of the warmest months in Arequipa (1st of 12) and one of the driest months (12th of 12). Daytime temperature runs 1°C above the annual average (22°C). September runs 1°C warmer than August (23°C) and stays flat into October.
September sunrise & sunset in Arequipa
Times shown for Arequipa local time (America/Lima), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Arequipa — September
Golden-hour and blue-hour windows for the 15th of September, in Arequipa's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Arequipa in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (High season) and Arequipa's popularity.
Crowds & pricing — September in Arequipa
This is a busy month in Arequipa — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — September in Arequipa
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Arequipa in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 20°C / 69°F | 11°C / 52°F | 127 mm | 17 | — |
| February | 20°C / 67°F | 11°C / 52°F | 171 mm | 21 | — |
| March | 19°C / 67°F | 11°C / 52°F | 114 mm | 19 | — |
| April | 21°C / 70°F | 10°C / 50°F | 28 mm | 6 | — |
| May | 22°C / 72°F | 9°C / 49°F | 1 mm | 0 | — |
| June | 22°C / 72°F | 9°C / 47°F | 1 mm | 0 | — |
| July | 22°C / 72°F | 9°C / 47°F | 1 mm | 0 | — |
| August | 23°C / 73°F | 9°C / 47°F | 1 mm | 0 | — |
| September | 23°C / 74°F | 10°C / 49°F | 1 mm | 0 | — |
| October | 23°C / 74°F | 10°C / 50°F | 3 mm | 1 | — |
| November | 23°C / 73°F | 10°C / 50°F | 4 mm | 1 | — |
| December | 22°C / 72°F | 11°C / 52°F | 22 mm | 6 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Arequipa in September →
Frequently asked questions
How hot is Arequipa in September?
In September, Arequipa averages a high of 23°C (74°F) and a low of 10°C (49°F) — generally mild and pleasant.
Does it rain a lot in Arequipa in September?
September is generally dry in Arequipa, with about 0 rainy days on average.
Is September a good time to visit Arequipa?
September is mild and pleasant and mostly dry. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Arequipa in September?
Pack light layers for warm days and cooler evenings. See the full September packing list for Arequipa for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.