Early summer · Weather & things to do
Mendoza in December
Mendoza warms up: highs climb to 91°F (33°C), from 87°F in November, with lows of 64°F (18°C) and about 1.2 in (30 mm) of rain.
Our comfort score puts it mid-table at 76/100, 11th of 12.
- Avg high
- 91°F (33°C)
- Avg low
- 64°F (18°C)
- Rain
- 1.2 in (30 mm)
- Humidity
- 37%
- Cloud cover
- 30%
- Daylight
- ~14 h 10 min
- Comfort score
- 76/100 · Great
What December feels like
Expect proper heat: afternoons average 91°F (33°C), so plan walking and hiking for the morning and save midday for shade, lunch or a swim.
There's a big swing between day and night, about 16°C (28°F), so mornings and evenings feel much cooler than the afternoon.
Low humidity, around 37%, makes the air feel crisp and dry.
About 1.2 in (30 mm) of rain falls in a typical year's December.
Clear skies are common, with cloud cover averaging only 30%.
Plan around December
December sits mid-table; the best months are April – June and August – October.
- Longest days of the year, about 14 h 10 min of daylight.
- Comfort slips from 85/100 in November to 76/100.
- Our Buenos Aires, Mendoza & Iguazú route recommends Mar – May, Sep – Nov, so December falls outside its suggested window.
What to pack for December
- Light, breathable clotheshighs average 91°F
- Sunscreen, sunglasses and a hathigh UV on clear days
- Refillable water bottleeasy to dehydrate in the heat
- A warm layer for eveningslows near 64°F
- Lip balm and moisturizerdry air
- Comfortable walking shoesmost picks involve some walking
What to do in Mendoza in December
Afternoons run hot (91°F), so these picks mix early-start outdoor spots with cool indoor breaks.
Azafrán
Downtown restaurant with modern Argentine cooking and a wine cellar you browse in person.
Why now A break from 91°F afternoons.
Catena Zapata
Pyramid-shaped winery in Agrelo that helped put Argentine Malbec on the world map.
Why now Somewhere to sit out the hottest hours.
Trapiche
Large Maipú estate in a restored 1912 building, with tours and a garden restaurant.
Why now December scores 76/100 for comfort, good conditions for being outside.
Termas Cacheuta
Thermal pools in the Mendoza River canyon on the road to the Andes.
Why now Highs near 91°F and 1.2 in of monthly rain make this an easy outdoor pick.
Francis Mallmann 1884
Francis Mallmann's wood-fired restaurant in the Escorihuela Gascón winery.
Nearby in December
- Valle de Uco in December~54 mi · highs 88°F, 0.8 in rain · 2°C (4°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 December: quick answers
Is December a good time to visit Mendoza?
It's middling, scoring 76/100. The best months are April – June and August – October, at up to 98. Expect highs of 91°F (33°C) and 1.2 in (30 mm) of rain. Our Buenos Aires, Mendoza & Iguazú route recommends Mar – May, Sep – Nov, so December is outside its suggested window.
How hot is Mendoza in December?
Average highs are 91°F (33°C) and average lows 64°F (18°C), making it the 2nd-warmest month by daytime highs.
Does it rain a lot in Mendoza in December?
Not much: about 1.2 in (30 mm) of rain falls across December on average, the 5th-wettest month of the year. The annual total is about 11.5 in (292 mm).
What should I pack for Mendoza in December?
Bring light, breathable clothes (highs average 91°F), sunscreen, sunglasses and a hat (high UV on clear days), refillable water bottle (easy to dehydrate in the heat), a warm layer for evenings (lows near 64°F) and lip balm and moisturizer (dry air).
Planning Mendoza in December?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.