May 27 is statistically one of the best days of the year in Siena. With minimal rain risk (13%) and pleasant highs of 24°C, it's ideal for outdoor adventures. Expect a bustling atmosphere in Siena right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for Siena
Currency
EUR
€ Euro
Language
Italian
+1 more
Driving
Right side
Safety
High Safety
GPI: 1.643
Siena Weather Forecast for May 27
"Mild & Comfortable. Expect average highs of 24°C. 13% chance of rain."
What to Wear in Siena in May
Based on historical data for May 27, Siena typically experiences temperatures between 12.1°C and 24°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (13% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Siena
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
24°C
Daytime Peak
Average Low
12.1°C
Nighttime Low
Feels Like
24.5°C
☀️ Feels accurate
Rain Chance
13%
Avg 0.6mm if it rains
Cloud Cover
46%
Overcast
Pressure
1015.7 hPa
Medium volatility
Siena Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 87% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
04:00 - 10:00
16:00 - 19:00
Type I-II
🔴 14 min to burn
Type III-IV
🟡 21 min to burn
Type V-VI
🟢 35 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
17.7°C
Noticeable
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Italy
Flight Traffic
High
98/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~63
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Siena
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:41
☀️ Noon
12:13
🌇 Sunset
19:44
⏱️ Daylight
15h 2m
Wind Speed
13.1 km/h
Gentle breeze
Sunshine
12.8 hrs
Direct Sun (Cloud-free)
Humidity
68%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Siena
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Siena
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.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Moderate seismic activity. Occasional tremors possible.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Siena on May 27 averages 24°C with a 13% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Siena Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (May 27) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Siena Worth Visiting on May 27?
Planning a trip to Siena on May 27? 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 24°C with a 13% historical precipitation risk.
✈️ Travel Logistics: Approximately 63 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Italy, including COVID-19.
📊 Historical Extremes: The hottest May 27 recorded in the last 30 years saw temperatures hit 34°C in 2022, while the coldest dropped to 9.4°C in 2021.