September 30 is generally a great time to visit Basel. While there is a slight chance of rain (29%), showers are usually brief. Expect comfortable 18°C weather. Expect a bustling atmosphere in Basel right now—this is when the city truly comes alive with visitors.
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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 September 30
"Mild & Comfortable. Expect average highs of 18.4°C. 29% chance of rain."
What to Wear in Basel in September
Based on historical data for September 30, Basel typically experiences temperatures between 9.2°C and 18.4°C. We recommend packing light jacket, long pants to stay comfortable. With a 29% 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
18.4°C
Daytime Peak
Average Low
9.2°C
Nighttime Low
Feels Like
18.4°C
🌤️ Feels accurate
Rain Chance
29%
Avg 1.9mm if it rains
Cloud Cover
65%
Overcast
Pressure
1018.2 hPa
Medium volatility
Basel Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 96% 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
🔴 35 min to burn
Type III-IV
🟡 53 min to burn
Type V-VI
🟢 88 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
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Switzerland
Flight Traffic
High
96/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~173
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Basel
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:27
☀️ Noon
12:20
🌇 Sunset
18:13
⏱️ Daylight
11h 46m
Wind Speed
9.7 km/h
Light breeze
Sunshine
7.2 hrs
Direct Sun (Cloud-free)
Humidity
80%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Basel
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Basel
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
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 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 September 30 averages 18.4°C with a 29% precipitation probability. Wedding/Outdoor Event Score: 91/100."
— 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
Compare Other Cities
Same date (September 30) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Basel Worth Visiting on September 30?
Planning a trip to Basel on September 30? 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 18.4°C with a 29% historical precipitation risk.
✈️ Travel Logistics: Approximately 173 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 September 30 recorded in the last 30 years saw temperatures hit 22.6°C in 2016, while the coldest dropped to 6.7°C in 2022.