Istanbul weather in August.
Peak summer: hot, busy, brilliant for beach addicts.
High
29°C
84°F
Low
20°C
68°F
Sea
25°C
Swimmable
Rain
39mm
Monthly total
Sun
11h/day
Daily average
Other months in Istanbul
FAQ
Honest answers about August.
Is Istanbul good in August?+
Peak summer: hot, busy, brilliant for beach addicts. Average daytime highs are 29°C with overnight lows around 20°C, and sea temperature is approximately 25°C.
What should I pack for Istanbul in August?+
Light layers, swimwear, sunhat, and SPF 30+. Evenings stay warm at 20°C so a light cardigan is enough.
Can I swim in the sea at Istanbul in August?+
Yes — sea temperature averages 25°C, which is comfortably swimmable for most UK travellers.
How busy is Istanbul in August?+
Crowd level: peak. Restaurants need booking days ahead, beach clubs sell out, and traffic is heavy.
What does a trip to Istanbul in August cost?+
Pricing tier: peak. Villas, hotels, and flights move with crowd levels. Expect peak-season pricing — book 4–6 months ahead for value.
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