Arica Weather in September
September in Arica averages 21°C (70°F) during the day and 14°C (57°F) at night. The perfect conditions and moderate rainfall make it a solid month to visit.
Rainfall in Arica in September
Typically around 2 days of rainfall are expected, averaging 31 mm (1.2 in) for the month. If rain does fall, it tends to arrive as a fairly heavy shower rather than light drizzle.
Temperature in Arica in September
If you're visiting Arica in September, expect perfect temperatures with highs of 21°C (70°F) and overnight lows of 14°C (57°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to around 14°C (57°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Arica in September
The area enjoys a moderate level of sunlight, with around 140 hours. It's a good balance between sunny and cloudy days.
Wind Speed in Arica in September
Wind speeds average 4 m/s (8 knots) during September. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.
Average water temperature in September
At 16°C (61°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.For more travel ideas, our weather planner can help you explore destinations around the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Chile, check out our Arica's climate page.
Arica Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
21°C (70°F)
Water Temperature
16°C (61°F)
Chance of Rain
6%
Precipitation
31 mm (1.2 in)
Rainy days
2 days
Humidity
77%
Windspeed
4 m/s (8 knots)
Sunshine
140 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Arica typically stay consistent throughout September, with daily highs averaging around 21°C (70°F). Nights are pleasant, with lows around 14°C (57°F).
Average temperatures in September
Historical weather for Arica in September
Browse day-by-day weather records for Arica spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Arica historical weather extremes in September
The extremes listed below come from historical weather data collected in Arica from 1993 through 2025.
- The warmest day in September was on September 15, 2015, with a maximum of 25°C (77°F).
- The coldest September day was on September 1, 2007, with a maximum of 15°C (59°F).
- Nighttime temperatures dropped to 3°C (37°F) on September 2, 2022, marking the coldest September night on record.
Best Places in Chile in September
Find out more about the weather in Chile and which places have the best travel conditions in this month. See all of Chile in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Arica in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Pack a light rain jacket or compact umbrella for occasional showers. With water temperatures around 16°C (61°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Arica in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Chile, check out our Arica's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Arica climate overview or explore weather in Chile.
