September 17 is generally a great time to visit Positano. While there is a slight chance of rain (21%), showers are usually brief. Expect comfortable 25°C weather. Positano is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Positano
Currency
EUR
€ Euro
Language
Italian
+1 more
Driving
Right side
Safety
High Safety
GPI: 1.643
Positano Weather Forecast for September 17
"Mild & Comfortable. Expect average highs of 24.7°C. 21% chance of rain."
What to Wear in Positano in September
Based on historical data for September 17, Positano typically experiences temperatures between 19°C and 24.7°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 Positano
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
24.7°C
Daytime Peak
Average Low
19°C
Nighttime Low
Feels Like
25.5°C
☀️ Feels accurate
Rain Chance
21%
Avg 2.2mm if it rains
Cloud Cover
44%
Overcast
Pressure
1015.4 hPa
Medium volatility
Positano Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ This date historically delivers consistent weather 76% 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
🔴 25 min to burn
Type III-IV
🟡 38 min to burn
Type V-VI
🟢 63 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
19.7°C
Noticeable
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Italy
Flight Traffic
High
97/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~144
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Positano
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:45
☀️ Noon
11:58
🌇 Sunset
18:10
⏱️ Daylight
12h 24m
Wind Speed
13.5 km/h
Gentle breeze
Sunshine
10.3 hrs
Direct Sun (Cloud-free)
Humidity
74%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Positano
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 Positano
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.
Volcanic Activity
Nearest: Mount Vesuvius
22.1km away
Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Positano on September 17 averages 24.7°C with a 21% precipitation probability. Wedding/Outdoor Event Score: 98/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Positano Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 13
25.3°C • 16% rain
Score
100
September 14
25.1°C • 15% rain
Score
100
September 11
25.8°C • 18% rain
Score
99
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 17) in other destinations
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📍 Is Positano Worth Visiting on September 17?
Planning a trip to Positano on September 17? 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 24.7°C with a 21% historical precipitation risk.
✈️ Travel Logistics: Approximately 144 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Italy, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 25.3°C (tropical bath). Wave conditions are generally fun waves with heights around 0.69m.
📊 Historical Extremes: The hottest September 17 recorded in the last 30 years saw temperatures hit 29.2°C in 2023, while the coldest dropped to 14.9°C in 2024.