April 20 is generally a great time to visit Basel. While there is a slight chance of rain (27%), showers are usually brief. Expect comfortable 16°C weather. Take advantage of the off-peak calm in Basel to see the sights without the usual crowds.
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Essential Travel Info for Basel
Currency
CHF
Fr. Swiss franc
Language
French
+3 more
Driving
Right side
Connect
As of Sept 2021, Basel has 4G from Salt,...
Safety
Very High Safety
GPI: 1.357
Basel Weather Forecast for April 20
"Mild & Comfortable. Expect average highs of 15.5°C. 27% chance of snow."
What to Wear in Basel in April
Based on historical data for April 20, Basel typically experiences temperatures between 4.7°C and 15.5°C. We recommend packing light jacket, long pants to stay comfortable. With a 27% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Basel
Smart Suitcase
- Light Jacket
- Long Pants
Average High
15.5°C
Daytime Peak
Average Low
4.7°C
Nighttime Low
Feels Like
15.5°C
🌤️ Feels accurate
Snow Chance
27%
Avg 1.6mm if it snows
Snowfall
0.1 cm
~27% chance
Pressure
1015 hPa
Medium volatility
Basel Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 19:00
Type I-II
🔴 22 min to burn
Type III-IV
🟡 33 min to burn
Type V-VI
🟢 55 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
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Switzerland
Flight Traffic
Quiet
24/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~44
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Basel
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:33
☀️ Noon
12:29
🌇 Sunset
19:26
⏱️ Daylight
13h 52m
Wind Speed
12 km/h
Gentle breeze
Sunshine
9.9 hrs
Direct Sun (Cloud-free)
Humidity
72%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Basel
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 Basel
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
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 acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Basel on April 20 averages 15.5°C with a 27% precipitation probability. Wedding/Outdoor Event Score: 80/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Basel Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
April 19
14.9°C • 29% rain
Score
87
April 14
14.9°C • 32% rain
Score
85
April 15
14.7°C • 30% rain
Score
85
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (April 20) in other destinations
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London
United Kingdom
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Netherlands
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🌍 Explore the same date in different destinations around the world
📍 Is Basel Worth Visiting on April 20?
Planning a trip to Basel on April 20? 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 15.5°C with a 27% historical precipitation risk.
✈️ Travel Logistics: Approximately 44 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Switzerland, including COVID-19.
📊 Historical Extremes: The hottest April 20 recorded in the last 30 years saw temperatures hit 25°C in 2018, while the coldest dropped to -3.2°C in 2017.