May 18 is generally a great time to visit Austin. While there is a slight chance of rain (22%), showers are usually brief. Expect comfortable 30°C weather. As it's peak season for Austin, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Austin
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Austin Weather Forecast for May 18
"Warm & Sunny. Expect average highs of 30.1°C. 22% chance of rain."
What to Wear in Austin in May
Based on historical data for May 18, Austin typically experiences temperatures between 19.9°C and 30.1°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (22% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Austin
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
30.1°C
Daytime Peak
Average Low
19.9°C
Nighttime Low
Feels Like
35.5°C
🔥 Heat index effect
Rain Chance
22%
Avg 1.9mm if it rains
Cloud Cover
55%
Overcast
Pressure
1012.2 hPa
Medium volatility
Austin 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+ required, seek shade
05:00 - 10:00
16:00 - 19:00
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
24.2°C
Humid/Sticky
Heat Index
35.5°C
Feels hotter
😐 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
High
100/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~377
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Austin
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:36
☀️ Noon
12:28
🌇 Sunset
19:20
⏱️ Daylight
13h 44m
Wind Speed
20.6 km/h
Moderate wind
Sunshine
10.2 hrs
Direct Sun (Cloud-free)
Humidity
71%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Austin
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Austin
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.
Mild discomfort possible for arthritic conditions.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Austin on May 18 averages 30.1°C with a 22% precipitation probability. Wedding/Outdoor Event Score: 93/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Austin Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 13
29°C • 25% rain
Score
95
May 14
29.2°C • 25% rain
Score
94
May 15
29.5°C • 26% rain
Score
94
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Austin Worth Visiting on May 18?
Planning a trip to Austin on May 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 30.1°C with a 22% historical precipitation risk.
✈️ Travel Logistics: Approximately 377 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest May 18 recorded in the last 30 years saw temperatures hit 37.2°C in 2018, while the coldest dropped to 17.5°C in 2016.