May 18 is statistically one of the best days of the year in Xi'an. With minimal rain risk (9%) and pleasant highs of 29°C, it's ideal for outdoor adventures. It's a lively time to explore Xi'an, with most attractions operating at full capacity.
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Essential Travel Info for Xi'an
Currency
CNY
¥ Chinese yuan
Language
Chinese
Driving
Right side
Connect
It's not very easy to make friends with ...
Safety
Moderate Safety
GPI: 2.01
Xi'an Weather Forecast for May 18
"Warm & Sunny. Expect average highs of 28.8°C. 9% chance of rain."
What to Wear in Xi'an in May
Based on historical data for May 18, Xi'an typically experiences temperatures between 15.8°C and 28.8°C. We recommend packing t-shirt, light clothing, layers (onion system) to stay comfortable. Trends suggest it will stay mostly dry (9% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Xi'an
Smart Suitcase
- T-Shirt
- Light Clothing
- Layers (Onion System)
Average High
28.8°C
Daytime Peak
Average Low
15.8°C
Nighttime Low
Feels Like
29.4°C
🔥 Feels accurate
Rain Chance
9%
Avg 0.5mm if it rains
Cloud Cover
62%
Overcast
Pressure
1008.1 hPa
Medium volatility
Xi'an Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 90% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 19:00
Type I-II
🔴 15 min to burn
Type III-IV
🟡 23 min to burn
Type V-VI
🟢 38 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
17.3°C
Noticeable
Heat Index
29.4°C
Feels hotter
🙂 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in China
Flight Traffic
Busy
67/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~355
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Xi'an
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:41
☀️ Noon
12:42
🌇 Sunset
19:42
⏱️ Daylight
14h 0m
Wind Speed
11.4 km/h
Light breeze
Sunshine
9.7 hrs
Direct Sun (Cloud-free)
Humidity
50%
Comfortable
Travel Intelligence
Exclusive flight analytics & health data for Xi'an
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Xi'an
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.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Unhealthy. Everyone should reduce 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, Xi'an on May 18 averages 28.8°C with a 9% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Xi'an Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (May 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Xi'an Worth Visiting on May 18?
Planning a trip to Xi'an 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 28.8°C with a 9% historical precipitation risk.
✈️ Travel Logistics: Approximately 355 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 10 vaccinations are recommended for China, including COVID-19.
📊 Historical Extremes: The hottest May 18 recorded in the last 30 years saw temperatures hit 37.2°C in 2025, while the coldest dropped to 11.6°C in 2021.