April 20 is generally a great time to visit Istanbul. While there is a slight chance of rain (20%), showers are usually brief. Expect comfortable 16°C weather. It's a great middle-ground for visiting Istanbul—enough activity to feel the pulse, but no overwhelming lines.
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Essential Travel Info for Istanbul
Currency
TRY
₺ Turkish lira
Language
Turkish
Driving
Right side
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Safety
Travel Precautions
GPI: 2.785
Istanbul Weather Forecast for April 20
"Mild & Comfortable. Expect average highs of 16.3°C. 20% chance of rain."
What to Wear in Istanbul in April
Based on historical data for April 20, Istanbul typically experiences temperatures between 9.1°C and 16.3°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (20% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Istanbul
Smart Suitcase
- Light Jacket
- Long Pants
Average High
16.3°C
Daytime Peak
Average Low
9.1°C
Nighttime Low
Feels Like
16.3°C
🌤️ Feels accurate
Rain Chance
20%
Avg 1.1mm if it rains
Cloud Cover
54%
Overcast
Pressure
1013.9 hPa
Medium volatility
Istanbul 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
06:00 - 10:00
16:00 - 19:00
Type I-II
🔴 19 min to burn
Type III-IV
🟡 29 min to burn
Type V-VI
🟢 48 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
12.1°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 Turkey
Flight Traffic
Moderate
58/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~743
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Istanbul
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:19
☀️ Noon
13:04
🌇 Sunset
19:49
⏱️ Daylight
13h 30m
Wind Speed
18.4 km/h
Gentle breeze
Sunshine
9.9 hrs
Direct Sun (Cloud-free)
Humidity
76%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Istanbul
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 Istanbul
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
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
Moderate seismic activity. Occasional tremors possible.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Istanbul on April 20 averages 16.3°C with a 20% precipitation probability. Wedding/Outdoor Event Score: 88/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Istanbul Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
April 27
17.7°C • 13% rain
Score
100
April 25
17.5°C • 12% rain
Score
99
April 26
17.6°C • 14% rain
Score
99
💡 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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🌍 Explore the same date in different destinations around the world
📍 Is Istanbul Worth Visiting on April 20?
Planning a trip to Istanbul 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 16.3°C with a 20% historical precipitation risk.
✈️ Travel Logistics: Approximately 743 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 7 vaccinations are recommended for Turkey, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 11.7°C (polar plunge). Wave conditions are generally lake-like with heights around 0.32m.
📊 Historical Extremes: The hottest April 20 recorded in the last 30 years saw temperatures hit 22.6°C in 2016, while the coldest dropped to 3.4°C in 2022.