Istanbul in August
In August, Istanbul averages 29°C (84°F) during the day and 20°C (68°F) at night, with only about 4 rainy days.
Peak seasonConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
August is a great month to visit Istanbul: pleasant temperatures and relatively few wet days.
How August compares to the rest of the year in Istanbul
August is one of the warmest months in Istanbul (2nd of 12) and one of the driest months (11th of 12). Daytime temperature runs 10°C above the annual average (19°C). August runs roughly the same as July (29°C) and cools 4°C in September (25°C).
August sunrise & sunset in Istanbul
Times shown for Istanbul local time (Europe/Istanbul), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Istanbul — August
Golden-hour and blue-hour windows for the 15th of August, in Istanbul's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Istanbul in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (Peak season) and Istanbul's popularity.
Crowds & pricing — August in Istanbul
Istanbul is in peak season during this month — expect bigger crowds at famous sights, higher hotel and flight prices, and longer queues. Restaurant reservations a few days out are advisable, and any boutique hotels you have your eye on should be booked weeks ahead. The trade-off: most attractions, restaurants, and seasonal services are fully open, the weather is at its most reliable, and the city feels at its most alive.
Why this tier: excellent tourism weather Northern Hemisphere summer holidays
Sun & mosquito risk — August in Istanbul
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Istanbul — August
Across the year Istanbul's sea swings from 8.8°C (February) to 24.9°C (August) — August sits at 24.9°C.
Istanbul in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 9°C / 48°F | 3°C / 37°F | 110 mm | 13 | — |
| February | 10°C / 50°F | 3°C / 37°F | 85 mm | 11 | — |
| March | 12°C / 54°F | 4°C / 39°F | 70 mm | 9 | — |
| April | 17°C / 63°F | 8°C / 46°F | 45 mm | 8 | — |
| May | 22°C / 72°F | 12°C / 54°F | 35 mm | 6 | — |
| June | 27°C / 81°F | 17°C / 63°F | 35 mm | 4 | — |
| July | 29°C / 84°F | 20°C / 68°F | 30 mm | 3 | — |
| August | 29°C / 84°F | 20°C / 68°F | 40 mm | 4 | — |
| September | 25°C / 77°F | 17°C / 63°F | 55 mm | 5 | — |
| October | 20°C / 68°F | 13°C / 55°F | 85 mm | 9 | — |
| November | 15°C / 59°F | 9°C / 48°F | 105 mm | 11 | — |
| December | 11°C / 52°F | 5°C / 41°F | 130 mm | 13 | — |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Istanbul in August →
Frequently asked questions
How hot is Istanbul in August?
In August, Istanbul averages a high of 29°C (84°F) and a low of 20°C (68°F) — generally warm.
Does it rain a lot in Istanbul in August?
August is generally dry in Istanbul, with about 4 rainy days on average.
Is August a good time to visit Istanbul?
August is warm and mostly dry. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Istanbul in August?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full August packing list for Istanbul for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.