May 12 sees frequent showers in San Sebastian. Historical data shows a 54% chance of rain, so pack accordingly. Temperatures average 18°C. It's a quieter period for San Sebastian, ideal for those who prefer unhurried sightseeing.
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Essential Travel Info for San Sebastian
Currency
EUR
€ Euro
Language
Spanish
+3 more
Driving
Right side
Safety
High Safety
GPI: 1.603
San Sebastian Weather Forecast for May 12
"Rainy & Overcast. Expect average highs of 18.2°C. 54% chance of rain."
What to Wear in San Sebastian in May
Based on historical data for May 12, San Sebastian typically experiences temperatures between 11.5°C and 18.2°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 54% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for San Sebastian
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
18.2°C
Daytime Peak
Average Low
11.5°C
Nighttime Low
Feels Like
18.2°C
🌤️ Feels accurate
Rain Chance
54%
Avg 4mm if it rains
Cloud Cover
71%
Overcast
Pressure
1016.2 hPa
Medium volatility
San Sebastian Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 81% 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 - 20:00
Type I-II
🔴 20 min to burn
Type III-IV
🟡 30 min to burn
Type V-VI
🟢 50 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
14.9°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 Spain
Flight Traffic
Quiet
20/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~6
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in San Sebastian
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:48
☀️ Noon
13:05
🌇 Sunset
20:22
⏱️ Daylight
14h 33m
Wind Speed
15.8 km/h
Gentle breeze
Sunshine
10.0 hrs
Direct Sun (Cloud-free)
Humidity
81%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for San Sebastian
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in San Sebastian
Travel Comfort Index
Real-time tourism conditions
Weather Quality
🌧️ Variable
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
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, San Sebastian on May 12 averages 18.2°C with a 54% precipitation probability. Wedding/Outdoor Event Score: 76/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
San Sebastian Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 19
18.3°C • 32% rain
Score
90
May 6
18.1°C • 34% rain
Score
88
May 7
18.3°C • 34% rain
Score
88
💡 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 San Sebastian Worth Visiting on May 12?
Planning a trip to San Sebastian 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 18.2°C with a 54% historical precipitation risk.
✈️ Travel Logistics: Approximately 6 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Spain, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 16.3°C (polar plunge). Wave conditions are generally fun waves with heights around 1.13m.
📊 Historical Extremes: The hottest May 12 recorded in the last 30 years saw temperatures hit 22.6°C in 2017, while the coldest dropped to 8.2°C in 2018.