Best Time to Visit Istanbul
Turkey · Mediterranean climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Recommended Months
Based on temperature comfort, low precipitation, and sunshine hours, the best time to visit Istanbul is:
August → June → July
August scores 74/100 — the highest-rated month for travel.
Monthly Ratings (0-100)
Scores are weighted: temperature comfort (50%), low precipitation (30%), sunshine (20%). Higher is better.
| Month | Overall Score | Temp Comfort | Precipitation | Sunshine | Bar |
|---|---|---|---|---|---|
| January | 10 | 20 | 0 | 0 | |
| February | 11 | 22 | 0 | 0 | |
| March | 12 | 25 | 0 | 0 | |
| April | 23 | 46 | 0 | 0 | |
| May | 34 | 68 | 0 | 0 | |
| June | 47 | 94 | 0 | 0 | |
| July | 45 | 90 | 0 | 0 | |
| August | 57 | 89 | 41 | 0 | |
| September | 46 | 92 | 0 | 0 | |
| October | 35 | 70 | 0 | 0 | |
| November | 24 | 49 | 0 | 0 | |
| December | 17 | 34 | 0 | 0 |
Monthly Temperature Comfort
| Month | Mean Temp | Comfort Level |
|---|---|---|
| January | 7.1°C (44.8°F) | Cool (0-9°C) |
| February | 7.4°C (45.3°F) | Cool (0-9°C) |
| March | 8.0°C (46.4°F) | Cool (0-9°C) |
| April | 12.3°C (54.1°F) | Mild (10-17°C) |
| May | 16.5°C (61.7°F) | Mild (10-17°C) |
| June | 21.7°C (71.1°F) | Warm (18-24°C) |
| July | 24.9°C (76.8°F) | Warm (18-24°C) |
| August | 25.2°C (77.4°F) | Hot (25-29°C) |
| September | 21.5°C (70.7°F) | Warm (18-24°C) |
| October | 16.9°C (62.4°F) | Mild (10-17°C) |
| November | 12.8°C (55.0°F) | Mild (10-17°C) |
| December | 9.8°C (49.6°F) | Cool (0-9°C) |
Monthly Precipitation Rating
| Month | Rainfall (mm) | Rainy Days | Rating |
|---|---|---|---|
| January | 97.7 mm | 15.8 | Wet |
| February | 73.7 mm | 12.4 | Wet |
| March | 83.4 mm | 17.0 | Wet |
| April | 72.1 mm | 14.6 | Wet |
| May | 58.8 mm | 12.8 | Moderate |
| June | 61.0 mm | 11.4 | Wet |
| July | 33.5 mm | 8.8 | Moderate |
| August | 19.7 mm | 8.0 | Dry |
| September | 47.0 mm | 12.8 | Moderate |
| October | 44.1 mm | 11.6 | Moderate |
| November | 94.5 mm | 13.8 | Wet |
| December | 80.4 mm | 15.6 | Wet |
Monthly Sunshine Rating
| Month | Sunshine (hrs/day) | Rating |
|---|---|---|
| January | 5.6 hrs | Moderate |
| February | 7.0 hrs | Good |
| March | 7.2 hrs | Good |
| April | 9.4 hrs | Excellent |
| May | 11.5 hrs | Excellent |
| June | 12.9 hrs | Excellent |
| July | 13.5 hrs | Excellent |
| August | 12.6 hrs | Excellent |
| September | 11.0 hrs | Excellent |
| October | 8.6 hrs | Excellent |
| November | 7.0 hrs | Good |
| December | 5.4 hrs | Moderate |
Season-by-Season Breakdown
Spring (Mar-May)
Temperature: 12.3°C (54.1°F)
Rainfall: 71.4mm avg
Sunshine: 9.4 hrs/day
Humidity: 77.0%
Rainy Days: 14.8/mo
Mild transitional weather — comfortable for most activities.
Summer (Jun-Aug)
Temperature: 23.9°C (75.0°F)
Rainfall: 38.1mm avg
Sunshine: 13.0 hrs/day
Humidity: 72.2%
Rainy Days: 9.4/mo
This is the warm season. Ideal for outdoor activities but be prepared for heat.
Autumn (Sep-Nov)
Temperature: 17.1°C (62.8°F)
Rainfall: 61.9mm avg
Sunshine: 8.9 hrs/day
Humidity: 75.0%
Rainy Days: 12.7/mo
Mild transitional weather — comfortable for most activities.
Winter (Dec-Feb)
Temperature: 8.1°C (46.6°F)
Rainfall: 83.9mm avg
Sunshine: 6.0 hrs/day
Humidity: 79.2%
Rainy Days: 14.6/mo
Mild transitional weather — comfortable for most activities.
Frequently Asked Questions
What is the best time to visit Istanbul?
Based on our data-driven analysis, the best months to visit Istanbul are August, June, July, when temperatures are comfortable, rainfall is lower, and sunshine is plentiful. August scores 74/100, the highest-rated month.
What is the hottest month in Istanbul?
August is the hottest month with an average temperature of 25.2°C (77.4°F).
What is the coldest month in Istanbul?
January is the coldest month with an average temperature of 7.1°C (44.8°F).
When is the rainy season in Istanbul?
January is the wettest month with an average of 97.7mm of precipitation. Istanbul experiences about 155.0 rainy days per year. The driest month is August with 19.7mm.
What should I pack for a trip to Istanbul?
Packing recommendations depend on the season of your visit. Based on the climate data, pack lightweight, breathable clothing if visiting during the warm months (August is hottest at 25.2°C). For cooler months, bring layers and a warm jacket (January averages 7.1°C). A waterproof jacket or umbrella is recommended year-round as Istanbul receives 766.0mm of annual precipitation. Sun protection is important, especially during months with high UV index.
Istanbul is a city where you can wake up sweating and need a jacket by sunset. I packed for August heat once and froze on a Bosphorus ferry at 9pm. Layers are essential — even summer evenings dip to 19°C with wind off the water. Pack a scarf (useful for mosques anyway). My favorite window is late September to October: 22°C, low humidity, fewer tourists at the Hagia Sophia. Skip February — cold rain, grey skies, many outdoor cafés shuttered. April brings tulip season and the city reawakens.
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 41.01°, 28.98°. Timezone: Europe/Istanbul. Last updated: 2026-07-30.