September · Argentina
Best time to visit Mendoza in September Weather, crowds & prices
Weather in Mendoza in September
Average temperature 15°C, 2 mm of rain, about 25 days with 6+ hours of sunshine and 35% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.6/10
Ranked #3 of 12 months
- Avg temp
- 15°C
- Rainfall
- 2 mm
- Humidity
- 35%
- Days with 6h+ sun
- 25
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Mendoza scores 9.6/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 15°C, 2 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
Mendoza turns Andean meltwater and irrigation channels into a grid of vineyards east of Aconcagua.
September in Mendoza — one of the year's strongest windows (3rd)
September averages 15°C (59°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rain is a non-issue at 2 mm for the month, with about 25 days with 6+ hours of sunshine and 11.8 hours of daylight to work with.
A 9.6/10 puts this among the year's best months in Mendoza (3rd of 12); only October scores higher, at 9.8/10.
Pack layers you can shed by midday plus one warm layer for the evening.
Figure on mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Mendoza in September?
- In September, Mendoza averages 15°C, 2 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 9.6/10.
- Is September a good time to visit Mendoza?
- September earns a 9.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Mendoza in September?
- Expect about 2 mm of rain in September. Average humidity is 35% and there are about 25 days with 6+ hours of sunshine.
Curated in Mendoza
Tickets & experiences
Things to do in Mendoza
Mendoza, Argentina. Live activities and tours from GetYourGuide, matched to this destination.