Istanbul weather in August
Istanbul in August averages 25°C (78°F), 29 mm of rain and 9.5 hours of sun a day.
Of the twelve months in Istanbul, August is the warmest, the second driest and the third sunniest.
- Average temp
- 25°C (78°F)
21–30°C · 70–85°F
- Rainfall
- 29 mm
Not much rain
- Sunshine
- 9.5 h
hours per day
What is Istanbul like in August?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Rain is usually light.
Evening
Evenings stay warm.
What should I pack for Istanbul in August?
High-factor sun cream
With 9.5 hours of sun a day, burn time is short even in shade.
Sunglasses and a brimmed hat
Midday glare is the part people underpack for, not the heat itself.
Loose cotton or linen
Synthetics stop working once you are sweating through them all day.
A refillable water bottle
Daily highs this warm need roughly double the water a temperate day does.
Comfortable walking shoes you can rinse
Dry warm weather is walking weather, and dust gets into everything.
August compared with July and September
August in Istanbul is about the same temperature as July and about as wet as it, which averages 25°C (77°F).
August in Istanbul is 4.1°C warmer than September and 15 mm drier than it, which averages 21°C (70°F).
Daylight in Istanbul in August
On 15 August the sun is up for 13 hours 48 minutes in Istanbul, rising about 06:14 and setting about 20:02 local time.
August ends 1 hour 12 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 1 hour 19 minutes short of June, the longest-lit month here.
Where to stay in Istanbul
Dates are a starting point for August.
Travel guides for Istanbul
What to read before you book.
Istanbul weather by month
TemperatureRainfall
How August compares with the rest of the year
August is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 7°C / 44°F | 74 mm |
| February | 7°C / 44°F | 74 mm |
| March | 9°C / 47°F | 66 mm |
| April | 13°C / 55°F | 47 mm |
| May | 18°C / 64°F | 29 mm |
| June | 22°C / 72°F | 29 mm |
| July | 25°C / 77°F | 23 mm |
| August | 25°C / 78°F | 29 mm |
| September | 21°C / 70°F | 43 mm |
| October | 17°C / 62°F | 85 mm |
| November | 12°C / 54°F | 79 mm |
| December | 8°C / 47°F | 101 mm |
Check another month
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FAQs about Istanbul in August
August climate averages for Istanbul, 1991–2020.
Istanbul averages 25°C (78°F) in August, ranging from about 21°C (70°F) at night to 30°C (85°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Barely. August sees only about 29 mm, so rain is unlikely to affect your plans.
Yes. August averages 25°C (78°F) against 21°C (70°F) in September — 4.1°C warmer.
August is about as warm as July, and about as wet.
Yes. August falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 9.5 hours of sun a day on the 1991–2020 average — among the brighter months anywhere.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what August is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 13 hours 48 minutes of daylight in mid-August, against 15 hours 7 minutes in June and 9 hours 15 minutes in December.
On 15 August, sunrise is about 06:14 and sunset about 20:02 local time. Both shift across the month — the month ends 1 hour 12 minutes shorter than it starts.
