February 18 is generally a great time to visit San Antonio. While there is a slight chance of rain (15%), showers are usually brief. Expect comfortable 19°C weather. San Antonio is seeing high visitor numbers, so iconic spots may be busier than usual.
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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 February 18
"Mild & Comfortable. Expect average highs of 19°C. 15% chance of rain."
What to Wear in San Antonio in February
Based on historical data for February 18, San Antonio typically experiences temperatures between 7.6°C and 19°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (15% 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
19°C
Daytime Peak
Average Low
7.6°C
Nighttime Low
Feels Like
19°C
🌤️ Feels accurate
Rain Chance
15%
Avg 0.7mm if it rains
Cloud Cover
56%
Overcast
Pressure
1019.4 hPa
Medium volatility
San Antonio Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
❓ Expect variable conditions. Have flexible plans and pack for multiple weather scenarios.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 50 min to burn
Type III-IV
🟡 75 min to burn
Type V-VI
🟢 125 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
12.5°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
Busy
67/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~109
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in San Antonio
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
08:11
☀️ Noon
13:49
🌇 Sunset
19:26
⏱️ Daylight
11h 14m
Wind Speed
19.1 km/h
Gentle breeze
Sunshine
7.3 hrs
Direct Sun (Cloud-free)
Humidity
66%
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
🟢 Quiet
Price Level
💰 Affordable
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 February 18 averages 19°C with a 15% precipitation probability. Wedding/Outdoor Event Score: 92/100."
— 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
February 20
20.1°C • 15% rain
Score
100
February 21
20.8°C • 14% rain
Score
100
February 22
21.3°C • 13% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (February 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is San Antonio Worth Visiting on February 18?
Planning a trip to San Antonio on February 18? 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 19°C with a 15% historical precipitation risk.
✈️ Travel Logistics: Approximately 109 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest February 18 recorded in the last 30 years saw temperatures hit 28.5°C in 2017, while the coldest dropped to -5.1°C in 2021.