September 4 is generally a great time to visit Bologna. While there is a slight chance of rain (21%), showers are usually brief. Expect comfortable 27°C weather. Expect a bustling atmosphere in Bologna right now—this is when the city truly comes alive with visitors.
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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 September 4
"Warm & Sunny. Expect average highs of 27°C. 21% chance of rain."
What to Wear in Bologna in September
Based on historical data for September 4, Bologna typically experiences temperatures between 16.9°C and 27°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (21% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Bologna
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
27°C
Daytime Peak
Average Low
16.9°C
Nighttime Low
Feels Like
28.5°C
🔥 Minor difference
Rain Chance
21%
Avg 1.1mm if it rains
Cloud Cover
42%
Overcast
Pressure
1015.7 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 97% 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 - 18:00
Type I-II
🔴 27 min to burn
Type III-IV
🟡 41 min to burn
Type V-VI
🟢 68 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
20.1°C
Humid/Sticky
Heat Index
28.5°C
Feels hotter
🙂 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Italy
Flight Traffic
High
95/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~122
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Bologna
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:41
☀️ Noon
12:15
🌇 Sunset
18:48
⏱️ Daylight
13h 6m
Wind Speed
11.1 km/h
Light breeze
Sunshine
10.6 hrs
Direct Sun (Cloud-free)
Humidity
66%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Bologna
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Bologna
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, Bologna on September 4 averages 27°C with a 21% precipitation probability. Wedding/Outdoor Event Score: 98/100."
— 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
September 11
26.7°C • 15% rain
Score
100
September 5
27°C • 19% rain
Score
99
September 7
27°C • 20% rain
Score
99
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 4) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Bologna Worth Visiting on September 4?
Planning a trip to Bologna on September 4? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 27°C with a 21% historical precipitation risk.
✈️ Travel Logistics: Approximately 122 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 September 4 recorded in the last 30 years saw temperatures hit 33.5°C in 2016, while the coldest dropped to 14.7°C in 2017.