Early spring · Weather & things to do
Mendoza in September
Mendoza warms up: highs climb to 73°F (23°C), from 66°F in August, with lows of 44°F (7°C) and about 0.3 in (8 mm) of rain.
At 98/100 for comfort (3rd of 12), it's one of the best months to visit.
- Avg high
- 73°F (23°C)
- Avg low
- 44°F (7°C)
- Rain
- 0.3 in (8 mm)
- Humidity
- 42%
- Cloud cover
- 35%
- Daylight
- ~11 h 49 min
- Comfort score
- 98/100 · Great
What September feels like
Warm afternoons near 73°F (23°C) make long days outdoors easy.
Mornings start much cooler: lows average 44°F (7°C), about 16°C (28°F) below the afternoon high.
It's one of the drier stretches, with only about 0.3 in (8 mm) of rain.
Sunny spells dominate: cloud cover averages 35%.
Plan around September
September is one of Mendoza's best months on the climate data.
- First warm month: highs reach 73°F, up from 66°F in August.
- Comfort holds steady from August (98 → 98/100).
- September sits inside the Mar – May, Sep – Nov window our Buenos Aires, Mendoza & Iguazú route recommends.
What to pack for September
- Light, breathable clothes73°F afternoons
- Sunscreen, sunglasses and a hatstrong sun this month
- A warm layer for eveningsnights drop to 44°F
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Mendoza in September
With conditions on your side, the picks below favor time outside.
Termas Cacheuta
Thermal pools in the Mendoza River canyon on the road to the Andes.
Why now September scores 98/100 for comfort, good conditions for being outside.
Parque General San Martín
Huge park west of downtown with a lake, rose garden and Cerro de la Gloria monument.
Why now Highs near 73°F and 0.3 in of monthly rain make this an easy outdoor pick.
Plaza Independencia
Main square anchoring four smaller plazas; Plaza España has bright Spanish tilework.
Why now One to do outside while the weather is on your side.
Bodega Norton
Historic Perdriel winery founded in 1895, with cellar tours and the La Vid restaurant.
Francis Mallmann 1884
Francis Mallmann's wood-fired restaurant in the Escorihuela Gascón winery.
Nearby in September
- Valle de Uco in September~54 mi · highs 70°F, 0.5 in rain · 2°C (3°F) cooler by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~918 m to Mendoza's ~769 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Mendoza in September: quick answers
Is September a good time to visit Mendoza?
Yes. On the climate data it's one of the best months, scoring 98/100. Expect highs of 73°F (23°C) and 0.3 in (8 mm) of rain. September is inside the Mar – May, Sep – Nov window our Buenos Aires, Mendoza & Iguazú route recommends.
How hot is Mendoza in September?
Average highs are 73°F (23°C) and average lows 44°F (7°C), making it the 5th-coldest month by daytime highs.
Does it rain a lot in Mendoza in September?
Not much: about 0.3 in (8 mm) of rain falls across September on average, the driest month of the year. The annual total is about 11.5 in (292 mm).
What should I pack for Mendoza in September?
Bring light, breathable clothes (73°F afternoons), sunscreen, sunglasses and a hat (strong sun this month), a warm layer for evenings (nights drop to 44°F) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Routes in season in September
- Buenos Aires, Mendoza & Iguazú Mar – May, Sep – Nov
Planning Mendoza in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.