December 31 is statistically one of the best days of the year in Mendoza. With minimal rain risk (13%) and pleasant highs of 30°C, it's ideal for outdoor adventures. As it's peak season for Mendoza, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Mendoza
Currency
ARS
$ Argentine peso
Language
Guaraní
+1 more
Driving
Right side
Safety
High Safety
GPI: 1.911
Mendoza Weather Forecast for December 31
"Warm & Sunny. Expect average highs of 30.3°C. 13% chance of rain."
What to Wear in Mendoza in December
Based on historical data for December 31, Mendoza typically experiences temperatures between 19.5°C and 30.3°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (13% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Mendoza
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
30.3°C
Daytime Peak
Average Low
19.5°C
Nighttime Low
Feels Like
30.3°C
🔥 Feels accurate
Rain Chance
13%
Avg 0.8mm if it rains
Cloud Cover
33%
Light drizzle
Pressure
1009.1 hPa
Low volatility
Mendoza Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ This date historically delivers consistent weather 78% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 50+, limit exposure 10am-4pm
06:00 - 10:00
16:00 - 20:00
Type I-II
🔴 10 min to burn
Type III-IV
🟡 15 min to burn
Type V-VI
🟢 25 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.9°C
Pleasant
Heat Index
30.3°C
Feels hotter
🙂 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Argentina
Flight Traffic
High
92/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~36
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Mendoza
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:30
☀️ Noon
13:39
🌇 Sunset
20:48
⏱️ Daylight
14h 17m
Wind Speed
18 km/h
Gentle breeze
Sunshine
12.8 hrs
Direct Sun (Cloud-free)
Humidity
42%
Comfortable
Travel Intelligence
Exclusive flight analytics & health data for Mendoza
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Mendoza
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Active seismic zone. Multiple earthquakes per year.
Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Mendoza on December 31 averages 30.3°C with a 13% precipitation probability. Wedding/Outdoor Event Score: 99/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Mendoza Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
January 1
29.9°C • 15% rain
Score
100
January 2
29.9°C • 14% rain
Score
100
January 3
29.8°C • 13% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (December 31) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Mendoza Worth Visiting on December 31?
Planning a trip to Mendoza on December 31? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 30.3°C with a 13% historical precipitation risk.
✈️ Travel Logistics: Approximately 36 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 8 vaccinations are recommended for Argentina, including COVID-19.
📊 Historical Extremes: The hottest December 31 recorded in the last 30 years saw temperatures hit 36.5°C in 2016, while the coldest dropped to 15.7°C in 2020.