October 20 is generally a great time to visit Rio de Janeiro. While there is a slight chance of rain (29%), showers are usually brief. Expect comfortable 27°C weather. Rio de Janeiro is seeing high visitor numbers, so iconic spots may be busier than usual.
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Essential Travel Info for Rio de Janeiro
Currency
BRL
R$ Brazilian real
Language
Portuguese
Driving
Right side
Safety
Moderate Safety
GPI: 2.465
Rio de Janeiro Weather Forecast for October 20
"Warm & Sunny. Expect average highs of 26.7°C. 29% chance of rain."
What to Wear in Rio de Janeiro in October
Based on historical data for October 20, Rio de Janeiro typically experiences temperatures between 19.6°C and 26.7°C. We recommend packing t-shirt, light clothing to stay comfortable. With a 29% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Rio de Janeiro
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
26.7°C
Daytime Peak
Average Low
19.6°C
Nighttime Low
Feels Like
27.9°C
☀️ Minor difference
Rain Chance
29%
Avg 2.1mm if it rains
Cloud Cover
69%
Overcast
Pressure
1016.1 hPa
Medium volatility
Rio de Janeiro Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
~ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 09:30
16:00 - 17:00
Type I-II
🔴 19 min to burn
Type III-IV
🟡 29 min to burn
Type V-VI
🟢 48 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
22.5°C
Humid/Sticky
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Morning hours (before 11 AM)
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Brazil
Flight Traffic
Busy
65/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~163
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Rio de Janeiro
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:17
☀️ Noon
11:38
🌇 Sunset
17:59
⏱️ Daylight
12h 42m
Wind Speed
17.8 km/h
Gentle breeze
Sunshine
8.5 hrs
Direct Sun (Cloud-free)
Humidity
78%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Rio de Janeiro
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Rio de Janeiro
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
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, Rio de Janeiro on October 20 averages 26.7°C with a 29% precipitation probability. Wedding/Outdoor Event Score: 92/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Rio de Janeiro Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
October 13
29.1°C • 16% rain
Score
95
October 22
27.5°C • 25% rain
Score
94
October 23
28°C • 24% rain
Score
94
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (October 20) in other destinations
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🌍 Explore the same date in different destinations around the world
📍 Is Rio de Janeiro Worth Visiting on October 20?
Planning a trip to Rio de Janeiro on October 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 26.7°C with a 29% historical precipitation risk.
✈️ Travel Logistics: Approximately 163 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 9 vaccinations are recommended for Brazil, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 22°C (swimming pool). Wave conditions are generally fun waves with heights around 1.03m.
📊 Historical Extremes: The hottest October 20 recorded in the last 30 years saw temperatures hit 36.1°C in 2016, while the coldest dropped to 16.1°C in 2025.