Türkiye Istanbul Weather in August — Climate Guide
August in Istanbul is Excellent
Istanbul Weather in August — Quick Answer
As of 2026- Avg temp
- 28° / 19°
- Rainfall
- 41mm · 5 days
- Crowds
- Very busy
As of 2026, Istanbul in August averages a high of 28°C and low of 19°C with 41mm of rain over about 5 days. Same as July — T-shirts + shorts + swimwear. Slightly higher humidity.
August is Excellent for Istanbul.
August is similar to July with slightly higher humidity + occasional thunderstorms. Sea temperature 24°C — peak swimming.
Late August hotel prices begin declining as European school holidays end. The smart-value pick — summer weather + early shoulder-season prices.
Travel score
Midsummer peak + Korean Liberation Day + 86°F + ferry escape
August Weather at a Glance
Istanbul in August averages 86°F / 30°C high and 68°F / 20°C low. 10 hours sunshine, 30mm rain, 5 rainy days. Similar to July + 70% humidity makes it feel hotter. Sunrise 6:05 AM, sunset 8:15 PM — daylight 14h 10m.
August Travel Advice
T-shirt + shorts + SPF 30+ + light jacket nights. Istanbul Music & Sema Festival (Mevlevi whirling dervishes, Sufi mysticism) + Heybeliada Music Days (early August). August 30 Victory Day public holiday + domestic tourists. Hotel rates yearly peak.
Flying In from Overseas
Korean Liberation Day 5-day + last summer-vacation window — Seoul-Istanbul $1,550-2,400. Aug 15 week biggest jump.
August Pricing Trends
Peak — Sultanahmet 4-star $195-360/night. Beşiktaş 5-star $430-795.
Istanbul August Weather Stats
Avg High
28°C
Avg Low
19°C
Rainy Days
5
41mm total
Sunshine
10.5h
Daily avg
Humidity
67%
Warm
UV Index
9
Very high
Wind
12 km/h
Gusts 25
Sea Temp
24°C
Avg water temp
Crowds
Very busy
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
27 μg/m³
PM10
54 μg/m³
Status
Moderate
Feels-Like Temperature & Wind
Feels like
Daytime
30°C
Nighttime
18°C
Humidity and wind affect how the actual temperature feels.
Wind
12 km/h
Max gust 25 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Sea swimming peak
- Late August hotel prices declining
- Music Festival concerts
Cons
- Continued peak crowds first 3 weeks
- Higher humidity
- Indoor visits very hot
August Events & Festivals
- Sea swimming peak
- European holidays continue
- Hotel prices declining late August
Istanbul in August — Full Picture
August is similar to July with slightly higher humidity + occasional thunderstorms. Sea temperature 24°C — peak swimming.
Late August hotel prices begin declining as European school holidays end. The smart-value pick — summer weather + early shoulder-season prices.
Istanbul Music Festival (late August - early September) brings classical music to historic venues. Hagia Eirene + Topkapi Palace courtyard concerts.
What to Wear & What to Pack
Same as July — T-shirts + shorts + swimwear. Slightly higher humidity.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
16°C
8°C
9.3/mo
Summer (Jun·Jul·Aug)
Current27.3°C
18°C
5/mo
Autumn (Sep·Oct·Nov)
19°C
12.3°C
9.3/mo
Winter (Dec·Jan·Feb)
9°C
3.7°C
12.7/mo
Istanbul Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 8° | 3° | 13d·91mm | 3.5h | 75% | 2 | Quiet | Low season | |
| 9° | 3° | 12d·78mm | 4h | 73% | 3 | Quiet | Low season | |
| 11° | 4° | 11d·68mm | 5h | 71% | 4 | Moderate | Shoulder | |
| April (Best) | 16° | 8° | 9d·46mm | 7h | 70% | 5 | Busy | Peak |
| May (Best) | 21° | 12° | 8d·36mm | 9h | 70% | 7 | Busy | Peak |
| June (Best) | 26° | 16° | 6d·35mm | 10h | 67% | 8 | Very busy | Peak |
| July (Best) | 28° | 19° | 4d·27mm | 11h | 65% | 9 | Very busy | Peak |
| August (Best) | 28° | 19° | 5d·41mm | 10.5h | 67% | 9 | Very busy | Peak |
| September (Best) | 24° | 16° | 6d·50mm | 9h | 67% | 7 | Busy | Shoulder |
| 19° | 12° | 10d·80mm | 6.5h | 71% | 5 | Moderate | Shoulder | |
| 14° | 9° | 12d·96mm | 4.5h | 75% | 3 | Quiet | Low season | |
| 10° | 5° | 13d·116mm | 3.5h | 76% | 2 | Moderate | Shoulder |
View Other Months
Istanbul August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Istanbul?
Istanbul in August is Excellent. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Istanbul in August?
Istanbul August averages a high of 28°C and a low of 19°C.
Does it rain much in Istanbul in August?
Istanbul August averages 41mm of rainfall over about 5 rainy days.
What should I wear in Istanbul in August?
Same as July — T-shirts + shorts + swimwear. Slightly higher humidity.
What time are sunrise and sunset in Istanbul in August?
Istanbul August sunrise is 06:15 and sunset is 20:00, with 13h 45m of daylight.
What's the air quality like in Istanbul in August?
Istanbul August air quality (AQI) averages 68, rated Moderate. PM2.5 averages 27μg/m³.
What activities are recommended in Istanbul in August?
In August, Istanbul is great for Sea swimming peak, Music Festival concerts, Bosphorus + Princes' Islands.
Is August peak season in Istanbul?
Istanbul August crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Istanbul
View Other Months
Planning a August trip to Istanbul?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.