August 18 is generally a great time to visit Piran. While there is a slight chance of rain (17%), showers are usually brief. Expect comfortable 28°C weather. Expect a bustling atmosphere in Piran right now—this is when the city truly comes alive with visitors.
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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 August 18
"Warm & Sunny. Expect average highs of 27.8°C. 17% chance of rain."
What to Wear in Piran in August
Based on historical data for August 18, Piran typically experiences temperatures between 21.3°C and 27.8°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (17% 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
27.8°C
Daytime Peak
Average Low
21.3°C
Nighttime Low
Feels Like
30.2°C
🔥 Feels warmer
Rain Chance
17%
Avg 1mm if it rains
Cloud Cover
40%
Overcast
Pressure
1013.9 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 90% 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 - 19:00
Type I-II
🔴 18 min to burn
Type III-IV
🟡 27 min to burn
Type V-VI
🟢 45 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
21.6°C
Humid/Sticky
Heat Index
30.2°C
Feels hotter
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Jellyfish Warning
High water temps may attract jellyfish swarms.
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Slovenia
Flight Traffic
High
81/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~26
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Piran
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:10
☀️ Noon
12:11
🌇 Sunset
19:11
⏱️ Daylight
14h 0m
Wind Speed
12.5 km/h
Gentle breeze
Sunshine
11.7 hrs
Direct Sun (Cloud-free)
Humidity
69%
Slightly humid
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 August 18 averages 27.8°C with a 17% precipitation probability. Wedding/Outdoor Event Score: 99/100."
— 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
August 11
28.3°C • 14% rain
Score
100
August 14
28.2°C • 13% rain
Score
100
August 15
28.1°C • 14% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Piran Worth Visiting on August 18?
Planning a trip to Piran on August 18? 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 17% historical precipitation risk.
✈️ Travel Logistics: Approximately 26 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 26.3°C (tropical bath). Wave conditions are generally lake-like with heights around 0.23m.
📊 Historical Extremes: The hottest August 18 recorded in the last 30 years saw temperatures hit 30.3°C in 2017, while the coldest dropped to 18.7°C in 2021.