Monthly climate guide
Istanbul weather in August
With highs near 29°C (85°F) and lows around 22°C (72°F), August feels hot in Istanbul. Rainfall averages about 20 mm (fairly dry) and the sky is mostly sunny. Daytime highs are about the same as July and 3°C warmer than September.
What stands out in August
- Seasonally, August counts as late summer in Istanbul.
- It's one of the sunniest months here, with cloud cover around 27%.
- With the heat, see Blue Mosque early in the morning or late in the afternoon.
- It's one of the drier months, with about 61% less rain than Istanbul's average.
August is typically Istanbul's warmest month.It's usually the driest month of the year.
Avg high
29°C
85°F
Avg low
22°C
72°F
Rainfall
20 mm
fairly dry
Humidity
67%
relative
Sky
27%
cloud · mostly sunny
Istanbul weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 8°C / 47°F | 4°C / 39°F | 81 mm | 83% | 74% |
| February | 10°C / 50°F | 4°C / 40°F | 60 mm | 82% | 74% |
| March | 12°C / 54°F | 6°C / 43°F | 49 mm | 79% | 64% |
| April | 17°C / 62°F | 9°C / 48°F | 47 mm | 75% | 56% |
| May | 21°C / 71°F | 14°C / 58°F | 50 mm | 75% | 58% |
| June | 26°C / 79°F | 19°C / 66°F | 42 mm | 71% | 42% |
| July | 29°C / 84°F | 22°C / 71°F | 23 mm | 66% | 24% |
| August | 29°C / 85°F | 22°C / 72°F | 20 mm | 67% | 27% |
| September | 26°C / 79°F | 20°C / 67°F | 54 mm | 67% | 40% |
| October | 20°C / 69°F | 15°C / 58°F | 62 mm | 76% | 56% |
| November | 15°C / 60°F | 10°C / 51°F | 53 mm | 79% | 67% |
| December | 11°C / 51°F | 6°C / 43°F | 81 mm | 82% | 69% |
What to pack for August
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- Sunglasses
Is August a good time to visit Istanbul?
Our Istanbul guide recommends: April to May or September to November, avoiding the summer heat and crowds.
A short Bosphorus ferry ride is one of the easiest ways to see the city from the water and cross between its European and Asian sides.
Best time to visit Istanbul →Other Turkey cities in August
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Istanbul weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/turkey/istanbul/august
<a href="https://weathercompare.eu/weather/turkey/istanbul/august">Istanbul weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/turkey/istanbul" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Istanbul weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/turkey/istanbul/august">Istanbul weather in August</a> – WeatherCompare</p>
Istanbul in August: quick answers
Is August a good time to visit Istanbul?
August is a reasonable time for Istanbul: highs around 29°C and about 20 mm of rain, though not one of the three best months.
How warm is Istanbul in August?
Average highs are about 29°C (85°F) and average lows about 22°C (72°F), based on 10 years of daily data.
Does it rain a lot in Istanbul in August?
Istanbul typically gets around 20 mm of rain in August — fairly dry. It's usually the driest month of the year.
When is the best time to visit Istanbul?
April to May or September to November, avoiding the summer heat and crowds.
Figures are long-term averages for the area around Istanbul (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.