December 18 is generally a great time to visit Sao Paulo. While there is a slight chance of rain (39%), showers are usually brief. Expect comfortable 27°C weather. It's a quieter period for Sao Paulo, ideal for those who prefer unhurried sightseeing.
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Essential Travel Info for Sao Paulo
Currency
BRL
R$ Brazilian real
Language
Portuguese
Driving
Right side
Safety
Moderate Safety
GPI: 2.465
Sao Paulo Weather Forecast for December 18
"Warm & Sunny. Expect average highs of 26.6°C. 39% chance of rain."
What to Wear in Sao Paulo in December
Based on historical data for December 18, Sao Paulo typically experiences temperatures between 18.1°C and 26.6°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 39% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Sao Paulo
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
26.6°C
Daytime Peak
Average Low
18.1°C
Nighttime Low
Feels Like
27.9°C
☀️ Minor difference
Rain Chance
39%
Avg 3.2mm if it rains
Cloud Cover
69%
Light drizzle
Pressure
1013.2 hPa
Low volatility
Sao Paulo Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 83% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30+ required, seek shade
05:00 - 10:00
16:00 - 18:00
Type I-II
🔴 13 min to burn
Type III-IV
🟡 20 min to burn
Type V-VI
🟢 33 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
23.3°C
Humid/Sticky
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Morning hours (before 11 AM)
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Brazil
Flight Traffic
Quiet
27/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~429
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Sao Paulo
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:16
☀️ Noon
12:04
🌇 Sunset
18:51
⏱️ Daylight
13h 34m
Wind Speed
17.4 km/h
Gentle breeze
Sunshine
9.9 hrs
Direct Sun (Cloud-free)
Humidity
82%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Sao Paulo
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Sao Paulo
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
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 acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Sao Paulo on December 18 averages 26.6°C with a 39% precipitation probability. Wedding/Outdoor Event Score: 85/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Sao Paulo Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (December 18) in other destinations
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📍 Is Sao Paulo Worth Visiting on December 18?
Planning a trip to Sao Paulo 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 26.6°C with a 39% historical precipitation risk.
✈️ Travel Logistics: Approximately 429 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 9 vaccinations are recommended for Brazil, including COVID-19.
📊 Historical Extremes: The hottest December 18 recorded in the last 30 years saw temperatures hit 31.9°C in 2018, while the coldest dropped to 15.3°C in 2022.