March 21 is statistically one of the best days of the year in Barcelona. With minimal rain risk (14%) and pleasant highs of 16°C, it's ideal for outdoor adventures. It's a quieter period for Barcelona, ideal for those who prefer unhurried sightseeing.
View the full calendar
Essential Travel Info for Barcelona
Currency
EUR
€ Euro
Language
Spanish
+3 more
Driving
Right side
Connect
Barcelona has 5G from all Spanish carrie...
Safety
High Safety
GPI: 1.603
Barcelona Weather Forecast for March 21
"Mild & Comfortable. Expect average highs of 15.8°C. 14% chance of rain."
What to Wear in Barcelona in March
Based on historical data for March 21, Barcelona typically experiences temperatures between 8.5°C and 15.8°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (14% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Barcelona
Smart Suitcase
- Light Jacket
- Long Pants
Average High
15.8°C
Daytime Peak
Average Low
8.5°C
Nighttime Low
Feels Like
15.8°C
🌤️ Feels accurate
Rain Chance
14%
Avg 0.7mm if it rains
Cloud Cover
54%
Overcast
Pressure
1017.3 hPa
Medium volatility
Barcelona Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 100% 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
🔴 29 min to burn
Type III-IV
🟡 44 min to burn
Type V-VI
🟢 73 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
11.6°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
36/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~464
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Barcelona
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:54
☀️ Noon
12:59
🌇 Sunset
19:04
⏱️ Daylight
12h 10m
Wind Speed
16.6 km/h
Gentle breeze
Sunshine
9.8 hrs
Direct Sun (Cloud-free)
Humidity
76%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Barcelona
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 Barcelona
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟢 Moderate
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 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, Barcelona on March 21 averages 15.8°C with a 14% precipitation probability. Wedding/Outdoor Event Score: 94/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Barcelona Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (March 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Barcelona Worth Visiting on March 21?
Planning a trip to Barcelona on March 21? 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 15.8°C with a 14% historical precipitation risk.
✈️ Travel Logistics: Approximately 464 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 7 vaccinations are recommended for Spain, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 14.5°C (polar plunge). Wave conditions are generally surfers only with heights around 1.22m.
📊 Historical Extremes: The hottest March 21 recorded in the last 30 years saw temperatures hit 17.6°C in 2024, while the coldest dropped to 1.7°C in 2018.