December 18 is statistically one of the best days of the year in Mendoza. With minimal rain risk (8%) and pleasant highs of 29°C, it's ideal for outdoor adventures. Expect a bustling atmosphere in Mendoza right now—this is when the city truly comes alive with visitors.
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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 18
"Warm & Sunny. Expect average highs of 29.4°C. 8% chance of rain."
What to Wear in Mendoza in December
Based on historical data for December 18, Mendoza typically experiences temperatures between 18.1°C and 29.4°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (8% 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
29.4°C
Daytime Peak
Average Low
18.1°C
Nighttime Low
Feels Like
29.2°C
🔥 Feels accurate
Rain Chance
8%
Avg 0.5mm if it rains
Cloud Cover
31%
Partly cloudy
Pressure
1009 hPa
Medium volatility
Mendoza Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ This date historically delivers consistent weather 77% 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
🔴 9 min to burn
Type III-IV
🟡 14 min to burn
Type V-VI
🟢 23 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.1°C
Pleasant
Heat Index
29.2°C
Feels hotter
🙂 Best outdoor time:
Any time during daylight hours
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
06:23
☀️ Noon
13:33
🌇 Sunset
20:42
⏱️ Daylight
14h 18m
Wind Speed
17.8 km/h
Gentle breeze
Sunshine
12.5 hrs
Direct Sun (Cloud-free)
Humidity
42%
Comfortable
Travel Intelligence
Exclusive flight analytics & health data for Mendoza
Smart Flight Estimator
Airport-to-Airport Logistics
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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
Moderate fluctuations. Some sensitivity possible.
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 18 averages 29.4°C with a 8% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— 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
Compare Other Cities
Same date (December 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Mendoza Worth Visiting on December 18?
Planning a trip to Mendoza on December 18? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 29.4°C with a 8% 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 18 recorded in the last 30 years saw temperatures hit 34°C in 2019, while the coldest dropped to 13.8°C in 2015.