April 15 is generally a great time to visit Thessaloniki. While there is a slight chance of rain (23%), showers are usually brief. Expect comfortable 19°C weather. You'll find plenty of company in Thessaloniki this month as tourism activity remains quite robust.
View the full calendar
Essential Travel Info for Thessaloniki
Currency
EUR
€ Euro
Language
Greek
Driving
Right side
Connect
As of 2021, Thessaloniki has 5G from Cos...
Safety
High Safety
GPI: 1.838
Thessaloniki Weather Forecast for April 15
"Mild & Comfortable. Expect average highs of 18.9°C. 23% chance of rain."
What to Wear in Thessaloniki in April
Based on historical data for April 15, Thessaloniki typically experiences temperatures between 9.4°C and 18.9°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (23% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Thessaloniki
Smart Suitcase
- Light Jacket
- Long Pants
Average High
18.9°C
Daytime Peak
Average Low
9.4°C
Nighttime Low
Feels Like
18.9°C
🌤️ Feels accurate
Rain Chance
23%
Avg 1.3mm if it rains
Cloud Cover
51%
Overcast
Pressure
1014.4 hPa
Medium volatility
Thessaloniki 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 - 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
13.5°C
Pleasant
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
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Greece
Flight Traffic
Busy
76/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~76
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Thessaloniki
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:51
☀️ Noon
12:29
🌇 Sunset
19:07
⏱️ Daylight
13h 16m
Wind Speed
12.2 km/h
Gentle breeze
Sunshine
10.1 hrs
Direct Sun (Cloud-free)
Humidity
71%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Thessaloniki
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 Thessaloniki
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰 Moderate
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, Thessaloniki on April 15 averages 18.9°C with a 23% precipitation probability. Wedding/Outdoor Event Score: 95/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Thessaloniki Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
April 12
18.5°C • 13% rain
Score
100
April 13
18.9°C • 13% rain
Score
100
April 11
18.2°C • 12% rain
Score
99
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (April 15) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Thessaloniki Worth Visiting on April 15?
Planning a trip to Thessaloniki on April 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 18.9°C with a 23% historical precipitation risk.
✈️ Travel Logistics: Approximately 76 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Greece, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 16°C (polar plunge). Wave conditions are generally lake-like with heights around 0.11m.
📊 Historical Extremes: The hottest April 15 recorded in the last 30 years saw temperatures hit 27.4°C in 2024, while the coldest dropped to 5.2°C in 2020.