March 15 is generally a great time to visit San Sebastian. While there is a slight chance of rain (35%), showers are usually brief. Expect comfortable 15°C weather. Take advantage of the off-peak calm in San Sebastian to see the sights without the usual crowds.
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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 March 15
"Mild & Comfortable. Expect average highs of 14.5°C. 35% chance of snow."
What to Wear in San Sebastian in March
Based on historical data for March 15, San Sebastian typically experiences temperatures between 7.7°C and 14.5°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 35% 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
14.5°C
Daytime Peak
Average Low
7.7°C
Nighttime Low
Feels Like
14.3°C
🌤️ Feels accurate
Snow Chance
35%
Avg 2.1mm if it snows
Snowfall
0.1 cm
~35% chance
Pressure
1019.4 hPa
High 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 82% 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
🔴 32 min to burn
Type III-IV
🟡 48 min to burn
Type V-VI
🟢 80 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
10.5°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 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
07:21
☀️ Noon
13:18
🌇 Sunset
19:14
⏱️ Daylight
11h 52m
Wind Speed
15.5 km/h
Gentle breeze
Sunshine
8.6 hrs
Direct Sun (Cloud-free)
Humidity
77%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for San Sebastian
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in San Sebastian
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
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, San Sebastian on March 15 averages 14.5°C with a 35% precipitation probability. Wedding/Outdoor Event Score: 86/100."
— 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
March 21
15°C • 24% rain
Score
93
March 22
15°C • 25% rain
Score
93
March 18
15°C • 28% rain
Score
92
💡 Moving your event by a few days could significantly improve weather conditions
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📍 Is San Sebastian Worth Visiting on March 15?
Planning a trip to San Sebastian on March 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 14.5°C with a 35% 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 13°C (polar plunge). Wave conditions are generally surfers only with heights around 1.49m.
📊 Historical Extremes: The hottest March 15 recorded in the last 30 years saw temperatures hit 22.2°C in 2022, while the coldest dropped to 2.9°C in 2025.