May 21 is generally a great time to visit Bologna. While there is a slight chance of rain (31%), showers are usually brief. Expect comfortable 23°C weather. Bologna is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Bologna
Currency
EUR
€ Euro
Language
Italian
+1 more
Driving
Right side
Connect
As of Sept 2021, Bologna has 5G from all...
Safety
High Safety
GPI: 1.643
Bologna Weather Forecast for May 21
"Mild & Comfortable. Expect average highs of 23.4°C. 31% chance of rain."
What to Wear in Bologna in May
Based on historical data for May 21, Bologna typically experiences temperatures between 13.2°C and 23.4°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 31% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Bologna
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
23.4°C
Daytime Peak
Average Low
13.2°C
Nighttime Low
Feels Like
23.8°C
☀️ Feels accurate
Rain Chance
31%
Avg 1.9mm if it rains
Cloud Cover
50%
Overcast
Pressure
1013.9 hPa
Medium volatility
Bologna Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 99% 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
🔴 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
16.9°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
99/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~128
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Bologna
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:42
☀️ Noon
12:12
🌇 Sunset
19:42
⏱️ Daylight
14h 59m
Wind Speed
13.4 km/h
Gentle breeze
Sunshine
10.9 hrs
Direct Sun (Cloud-free)
Humidity
67%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Bologna
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Bologna
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
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, Bologna on May 21 averages 23.4°C with a 31% precipitation probability. Wedding/Outdoor Event Score: 95/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Bologna Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 25
24.5°C • 17% rain
Score
100
May 26
24.7°C • 16% rain
Score
100
May 24
24.3°C • 18% rain
Score
99
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Bologna Worth Visiting on May 21?
Planning a trip to Bologna on May 21? 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 23.4°C with a 31% historical precipitation risk.
✈️ Travel Logistics: Approximately 128 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 21 recorded in the last 30 years saw temperatures hit 30°C in 2022, while the coldest dropped to 10.6°C in 2016.