June
★ Best time
27° / 17°C
4 rain days
warm, dry
- comfortable temperatures (avg high 27°C / 81°F)
- very low rainfall (only 4 rain days)
- warm evenings without humidity overload
Best time to visit Istanbul
Istanbul, Turkey — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. The standouts: June, September, May.
★ Best months to visit
September
★ Best time
25° / 17°C
5 rain days
warm
- comfortable temperatures (avg high 25°C / 77°F)
- very low rainfall (only 5 rain days)
- warm evenings without humidity overload
May
★ Best time
22° / 12°C
6 rain days
warm
- comfortable temperatures (avg high 22°C / 72°F)
- very low rainfall (only 6 rain days)
July
★ Best time
29° / 20°C
3 rain days
hot, dry
- very low rainfall (only 3 rain days)
- warm evenings without humidity overload
August
★ Best time
29° / 20°C
4 rain days
hot, dry
- very low rainfall (only 4 rain days)
- warm evenings without humidity overload
October
★ Best time
20° / 13°C
9 rain days
mild
- comfortable temperatures (avg high 20°C / 68°F)
- manageable rain (9 days)
April
★ Best time
17° / 8°C
8 rain days
mild
- manageable rain (8 days)
November
★ Best time
15° / 9°C
11 rain days
cool, rainy
OK — shoulder months
March
OK
12° / 4°C
9 rain days
cool
- manageable rain (9 days)
December
OK
11° / 5°C
13 rain days
cool, rainy
February
OK
10° / 3°C
11 rain days
cool, rainy
January
OK
9° / 3°C
13 rain days
chilly, rainy
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.