August 21 is generally a great time to visit Zurich. While there is a slight chance of rain (26%), showers are usually brief. Expect comfortable 24°C weather. As it's peak season for Zurich, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Zurich
Currency
CHF
Fr. Swiss franc
Language
French
+3 more
Driving
Right side
Connect
As of Sept 2021, the city has 5G from al...
Safety
Very High Safety
GPI: 1.357
Zurich Weather Forecast for August 21
"Mild & Comfortable. Expect average highs of 23.9°C. 26% chance of rain."
What to Wear in Zurich in August
Based on historical data for August 21, Zurich typically experiences temperatures between 15.3°C and 23.9°C. We recommend packing t-shirt, light clothing to stay comfortable. With a 26% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Zurich
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
23.9°C
Daytime Peak
Average Low
15.3°C
Nighttime Low
Feels Like
24.5°C
☀️ Feels accurate
Rain Chance
26%
Avg 1.8mm if it rains
Cloud Cover
52%
Overcast
Pressure
1017.3 hPa
Low volatility
Zurich 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
🔴 20 min to burn
Type III-IV
🟡 30 min to burn
Type V-VI
🟢 50 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
19.2°C
Noticeable
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
100/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~542
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Zurich
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:31
☀️ Noon
12:30
🌇 Sunset
19:29
⏱️ Daylight
13h 58m
Wind Speed
8.8 km/h
Light breeze
Sunshine
10.7 hrs
Direct Sun (Cloud-free)
Humidity
75%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Zurich
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 Zurich
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🔴 Very Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
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, Zurich on August 21 averages 23.9°C with a 26% precipitation probability. Wedding/Outdoor Event Score: 97/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Zurich Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (August 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Zurich Worth Visiting on August 21?
Planning a trip to Zurich on August 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 23.9°C with a 26% historical precipitation risk.
✈️ Travel Logistics: Approximately 542 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 7 vaccinations are recommended for Switzerland, including COVID-19.
📊 Historical Extremes: The hottest August 21 recorded in the last 30 years saw temperatures hit 32.7°C in 2023, while the coldest dropped to 11.3°C in 2017.