August 30 is generally a great time to visit Siena. While there is a slight chance of rain (22%), showers are usually brief. Expect comfortable 28°C weather. 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 August 30
"Warm & Sunny. Expect average highs of 27.8°C. 22% chance of rain."
What to Wear in Siena in August
Based on historical data for August 30, Siena typically experiences temperatures between 16.7°C and 27.8°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 Siena
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
27.8°C
Daytime Peak
Average Low
16.7°C
Nighttime Low
Feels Like
29.8°C
🔥 Minor difference
Rain Chance
22%
Avg 1.4mm if it rains
Cloud Cover
34%
Light drizzle
Pressure
1013.7 hPa
Medium volatility
Siena 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 recommended
05:00 - 10:00
16:00 - 18:00
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
20.9°C
Humid/Sticky
Heat Index
29.8°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
100/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~64
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Siena
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:37
☀️ Noon
12:16
🌇 Sunset
18:56
⏱️ Daylight
13h 18m
Wind Speed
13 km/h
Gentle breeze
Sunshine
11.2 hrs
Direct Sun (Cloud-free)
Humidity
66%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Siena
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
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Travel Health & Safety in Siena
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🔴 Very 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 August 30 averages 27.8°C with a 22% precipitation probability. Wedding/Outdoor Event Score: 98/100."
— 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
Better Alternatives Nearby
Consider these dates within ±7 days
August 23
30°C • 11% rain
Score
100
August 24
30°C • 9% rain
Score
100
August 25
29.8°C • 11% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 30) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Siena Worth Visiting on August 30?
Planning a trip to Siena on August 30? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 27.8°C with a 22% historical precipitation risk.
✈️ Travel Logistics: Approximately 64 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 August 30 recorded in the last 30 years saw temperatures hit 34.7°C in 2017, while the coldest dropped to 12.8°C in 2021.