June 15 is generally a great time to visit Piran. While there is a slight chance of rain (25%), showers are usually brief. Expect comfortable 25°C weather. You'll find plenty of company in Piran this month as tourism activity remains quite robust.
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Essential Travel Info for Piran
Currency
EUR
€ Euro
Language
Slovene
Driving
Right side
Safety
Very High Safety
GPI: 1.316
Piran Weather Forecast for June 15
"Mild & Comfortable. Expect average highs of 25°C. 25% chance of rain."
What to Wear in Piran in June
Based on historical data for June 15, Piran typically experiences temperatures between 18.7°C and 25°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (25% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Piran
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
25°C
Daytime Peak
Average Low
18.7°C
Nighttime Low
Feels Like
25.7°C
☀️ Feels accurate
Rain Chance
25%
Avg 1.7mm if it rains
Cloud Cover
48%
Overcast
Pressure
1014.6 hPa
Low volatility
Piran Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 95% 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
19.4°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 Slovenia
Flight Traffic
Busy
72/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~23
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Piran
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:17
☀️ Noon
12:07
🌇 Sunset
19:57
⏱️ Daylight
15h 39m
Wind Speed
14 km/h
Gentle breeze
Sunshine
12.9 hrs
Direct Sun (Cloud-free)
Humidity
71%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Piran
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Piran
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🔴 Very Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Piran on June 15 averages 25°C with a 25% precipitation probability. Wedding/Outdoor Event Score: 97/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Piran Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
June 19
25.7°C • 15% rain
Score
100
June 17
25.3°C • 17% rain
Score
99
June 18
25.5°C • 17% rain
Score
99
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (June 15) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Piran Worth Visiting on June 15?
Planning a trip to Piran on June 15? 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 25°C with a 25% historical precipitation risk.
✈️ Travel Logistics: Approximately 23 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Slovenia, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 22.9°C (swimming pool). Wave conditions are generally lake-like with heights around 0.26m.
📊 Historical Extremes: The hottest June 15 recorded in the last 30 years saw temperatures hit 30.2°C in 2025, while the coldest dropped to 16.2°C in 2024.