May 12 is statistically one of the best days of the year in Santorini. With minimal rain risk (4%) and pleasant highs of 21°C, it's ideal for outdoor adventures. Santorini is seeing high visitor numbers, so iconic spots may be busier than usual.
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Essential Travel Info for Santorini
Currency
EUR
€ Euro
Language
Greek
Driving
Right side
Connect
There are some local radio stations in S...
Safety
High Safety
GPI: 1.838
Santorini Weather Forecast for May 12
"Mild & Comfortable. Expect average highs of 20.8°C. 4% chance of rain."
What to Wear in Santorini in May
Based on historical data for May 12, Santorini typically experiences temperatures between 16.6°C and 20.8°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (4% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Santorini
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
20.8°C
Daytime Peak
Average Low
16.6°C
Nighttime Low
Feels Like
20.9°C
☀️ Feels accurate
Rain Chance
4%
Avg 0mm if it rains
Cloud Cover
25%
Overcast
Pressure
1013.3 hPa
Low volatility
Santorini Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 98% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30+ required, seek shade
05:00 - 10:00
16:00 - 19:00
Type I-II
🔴 11 min to burn
Type III-IV
🟡 17 min to burn
Type V-VI
🟢 28 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.1°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
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Greece
Flight Traffic
Busy
63/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~31
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Santorini
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:15
☀️ Noon
12:15
🌇 Sunset
19:16
⏱️ Daylight
14h 0m
Wind Speed
27.1 km/h
Moderate wind
Sunshine
12.4 hrs
Direct Sun (Cloud-free)
Humidity
70%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Santorini
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Santorini
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 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
Active seismic zone. Multiple earthquakes per year.
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, Santorini on May 12 averages 20.8°C with a 4% precipitation probability. Wedding/Outdoor Event Score: 98/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Santorini Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 17
21.8°C • 1% rain
Score
100
May 18
21.9°C • 2% rain
Score
100
May 19
22°C • 4% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 12) in other destinations
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📍 Is Santorini Worth Visiting on May 12?
Planning a trip to Santorini on May 12? 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 20.8°C with a 4% historical precipitation risk.
✈️ Travel Logistics: Approximately 31 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 18.7°C (refreshing tonic). Wave conditions are generally fun waves with heights around 0.85m.
📊 Historical Extremes: The hottest May 12 recorded in the last 30 years saw temperatures hit 27.6°C in 2020, while the coldest dropped to 14.6°C in 2019.