What August feels like in Istanbul
In Istanbul, August brings late summer. Afternoons are hot, so sightseeing works best in the morning or evening. Little changes after sunset — nights stay warm, only slightly below the daytime level. Some humidity hangs in the air, noticeable when the sun is strong.
Rain in Istanbul in August
Dry weather dominates, and an umbrella can mostly stay packed. Wet days average about 5.7 mm (0.2 in), enough to soak you without an umbrella. Across the year Istanbul averages about 7 mm per rainy day, so August is typical. August is Istanbul's driest month of the year.
Daylight and sunshine in August
On 15 August the sun rises at about 6:13 am and sets around 8:05 pm local time, giving 13 h 52 min of daylight. Evenings are drawing in — 1 h less daylight than mid-July. About 92% of daylight hours are sunny; in short, skies are mostly clear.
How August compares to the rest of the year
August is the warmest month of the year in Istanbul. It is about as warm as July, with 5 mm less rain. September is cooler again. By September, typical highs are 24.9°C (76.8°F).
Who August suits
- Sightseeing: a good fit — daytime temperatures are fine for walking around.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
Tips for visiting Istanbul in August
Sun Protection
Protect yourself from strong sun: hat, SPF and plenty of water.
Quick questions
How warm is Istanbul in August?
Expect around 28.9°C (84°F) in the afternoon and 21.8°C (71.2°F) at night, which most visitors would call hot.
Does it rain a lot in Istanbul in August?
Hardly — only about 3 rainy days and 17 mm for the whole month.
What should I wear in Istanbul in August?
Based on the averages: sun protection. Evenings feel similar to the day, so the same clothes work from morning to night.
Is August or September better for visiting Istanbul?
August, clearly: it ranks #1 of 12 among Istanbul's months, against #5 for the other. September is cooler and has more rainy days.