Istanbul weather in August
August in Istanbul: hot, dry, with clean air — a great time to visit.
#7 of 12 months in Istanbul · #335 of 604 destinations to visit in August · comfort 77/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Istanbul climate normals — August
| Daytime high | 29°C / 84°F | 🥵 hot |
|---|---|---|
| Nighttime low | 22°C / 72°F | |
| Feels like (high) | 30°C / 86°F | |
| Rainfall | 15 mm / 0.6 in | ☀️ dry |
| Rainy days | 4 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 20°C / 68°F | |
| Sunshine | 12.2 h/day | |
| Daylight | 13.8 h | |
| Wind | 24 km/h / 15 mph | |
| Air quality (US AQI) | 49 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Istanbul in August — FAQ
- Is August a good time to visit Istanbul?
- August in Istanbul: hot, dry, with clean air — a great time to visit. It ranks #7 of 12 months for Istanbul on SeasonMap's comfort score (77/100).
- What is the weather like in Istanbul in August?
- In August, Istanbul averages a daily high of 28.8°C and a low of 22.4°C, with about 15.3 mm of rain over roughly 3.6 rainy days.
- What is the air quality in Istanbul in August?
- Istanbul has a mean US Air Quality Index of about 49 in August.