Peru
Arequipa in September: weather & travel advice
This month's data profile
Strong month under the current formula
Arequipa in September is climatically well suited to active holidays and hiking, city breaks and family holidays. The average daily high is around 20 °C. With about 1 rainy day it is very dry.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
90/100 · #1
Warmth
#3
Dryness
#5
Sun
#4
Published best categories: Overall, City break, Active, Family
Arequipa · SeptemberPhoto: Draceane · CC BY-SA 4.0Climate facts
- Average high
- 20 °C
- Average low
- 4 °C
- Rainy days (est.)
- 1 rainy day (est.)
- Sun (est.)
- 9 h/day
- Humidity
- 35 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| August | 19 | 3 | 0 | 1 | 7.9 | 33 | 2.3 | 88 |
| September (selected) | 20 | 4 | 1 | 5 | 8.9 | 35 | 2.5 | 90 |
| October | 20 | 5 | 1 | 6 | 9.8 | 38 | 2.5 | 90 |
How do the previous and next months compare?
Baseline: September (90/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| August | -2 | -0.8 °C | -1 °C | -0.6 | -3.5 mm | -1 h | -2.3 % | -0.2 m/s |
| October | ±0 | +0.5 °C | +0.9 °C | +0.4 | +1.1 mm | +0.9 h | +3.2 % | ±0 m/s |
All twelve months in context
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Where to stay in Arequipa
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Useful next decisions
Frequently asked questions
How warm is Arequipa in September?
The average daily high is around 20 °C, with an average daily low of about 4 °C.
Does it rain a lot in Arequipa in September?
The curated estimate is about 1 rainy day per month, not a directly measured long-term average. Total precipitation averages around 5 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Arequipa?
By the climate score, April, September, October and November are the strongest months for Arequipa. September is one of them.