September 17 is generally a great time to visit Santander. While there is a slight chance of rain (24%), showers are usually brief. Expect comfortable 23°C weather. Expect a bustling atmosphere in Santander right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for Santander
Currency
EUR
€ Euro
Language
Spanish
+3 more
Driving
Right side
Safety
High Safety
GPI: 1.603
Santander Weather Forecast for September 17
"Mild & Comfortable. Expect average highs of 22.5°C. 24% chance of rain."
What to Wear in Santander in September
Based on historical data for September 17, Santander typically experiences temperatures between 15.4°C and 22.5°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (24% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Santander
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
22.5°C
Daytime Peak
Average Low
15.4°C
Nighttime Low
Feels Like
23°C
☀️ Feels accurate
Rain Chance
24%
Avg 1.8mm if it rains
Cloud Cover
57%
Light drizzle
Pressure
1017.2 hPa
Medium volatility
Santander 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 15 for extended outdoor time
Type I-II
🔴 31 min to burn
Type III-IV
🟡 47 min to burn
Type V-VI
🟢 78 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
18.7°C
Noticeable
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 Spain
Flight Traffic
High
97/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~28
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Santander
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:57
☀️ Noon
13:11
🌇 Sunset
19:24
⏱️ Daylight
12h 26m
Wind Speed
16.9 km/h
Gentle breeze
Sunshine
9.8 hrs
Direct Sun (Cloud-free)
Humidity
79%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Santander
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Santander
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
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
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Santander on September 17 averages 22.5°C with a 24% precipitation probability. Wedding/Outdoor Event Score: 96/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Santander Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (September 17) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Santander Worth Visiting on September 17?
Planning a trip to Santander on September 17? 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 22.5°C with a 24% historical precipitation risk.
✈️ Travel Logistics: Approximately 28 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 21.1°C (swimming pool). Wave conditions are generally surfers only with heights around 1.34m.
📊 Historical Extremes: The hottest September 17 recorded in the last 30 years saw temperatures hit 30.5°C in 2020, while the coldest dropped to 12.3°C in 2024.