November 20 is generally a great time to visit San Antonio. While there is a slight chance of rain (17%), showers are usually brief. Expect comfortable 21°C weather. Expect a bustling atmosphere in San Antonio right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for San Antonio
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Connect
As of Dec 2021, San Antonio has 5G from ...
Safety
Moderate Safety
GPI: 2.44
San Antonio Weather Forecast for November 20
"Mild & Comfortable. Expect average highs of 21.4°C. 17% chance of rain."
What to Wear in San Antonio in November
Based on historical data for November 20, San Antonio typically experiences temperatures between 11.8°C and 21.4°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (17% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for San Antonio
Smart Suitcase
- Light Jacket
- Long Pants
Average High
21.4°C
Daytime Peak
Average Low
11.8°C
Nighttime Low
Feels Like
21.6°C
☀️ Feels accurate
Rain Chance
17%
Avg 0.8mm if it rains
Cloud Cover
47%
Overcast
Pressure
1019.8 hPa
Medium volatility
San Antonio 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 15 for extended outdoor time
Type I-II
🔴 160 min to burn
Type III-IV
🟡 240 min to burn
Type V-VI
🟢 400 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.2°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
High
83/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~135
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in San Antonio
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
08:03
☀️ Noon
13:21
🌇 Sunset
18:38
⏱️ Daylight
10h 35m
Wind Speed
15.8 km/h
Gentle breeze
Sunshine
7.1 hrs
Direct Sun (Cloud-free)
Humidity
68%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for San Antonio
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in San Antonio
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟢 Moderate
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 excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, San Antonio on November 20 averages 21.4°C with a 17% precipitation probability. Wedding/Outdoor Event Score: 99/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
San Antonio Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
💡 Moving your event by a few days could significantly improve weather conditions
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Same date (November 20) in other destinations
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📍 Is San Antonio Worth Visiting on November 20?
Planning a trip to San Antonio on November 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 21.4°C with a 17% historical precipitation risk.
✈️ Travel Logistics: Approximately 135 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest November 20 recorded in the last 30 years saw temperatures hit 29.6°C in 2025, while the coldest dropped to 3.6°C in 2016.