January 15 is generally a great time to visit Piran. While there is a slight chance of rain (18%), showers are usually brief. Expect comfortable 9°C weather. You'll enjoy Piran with reasonable crowd levels and competitive accommodation options.
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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 January 15
"Mild & Comfortable. Expect average highs of 8.5°C. 18% chance of snow."
What to Wear in Piran in January
Based on historical data for January 15, Piran typically experiences temperatures between 3.3°C and 8.5°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (18% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Piran
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
8.5°C
Daytime Peak
Average Low
3.3°C
Nighttime Low
Feels Like
6.2°C
❄️ Slightly colder
Snow Chance
18%
Avg 1.2mm if it snows
Snowfall
0.1 cm
~18% chance
Pressure
1019.9 hPa
High volatility
Piran Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 100% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 200 min to burn
Type III-IV
🟡 300 min to burn
Type V-VI
🟢 500 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
4.5°C
Dry air
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Midday (11 AM - 3 PM) when warmest
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Slovenia
Flight Traffic
Moderate
44/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~14
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Piran
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:43
☀️ Noon
12:16
🌇 Sunset
16:48
⏱️ Daylight
9h 5m
Wind Speed
13.8 km/h
Gentle breeze
Sunshine
6.0 hrs
Direct Sun (Cloud-free)
Humidity
76%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Piran
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Piran
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟢 Moderate
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
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 January 15 averages 8.5°C with a 18% precipitation probability. Wedding/Outdoor Event Score: 63/100."
— 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
January 12
8.7°C • 12% rain
Score
70
January 13
8.7°C • 14% rain
Score
70
January 14
8.6°C • 14% rain
Score
69
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (January 15) in other destinations
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📍 Is Piran Worth Visiting on January 15?
Planning a trip to Piran on January 15? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 8.5°C with a 18% historical precipitation risk.
✈️ Travel Logistics: Approximately 14 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 11.4°C (polar plunge). Wave conditions are generally lake-like with heights around 0.36m.
📊 Historical Extremes: The hottest January 15 recorded in the last 30 years saw temperatures hit 12°C in 2022, while the coldest dropped to -0.7°C in 2021.