Mornings sit near the overnight low around 25°C with clear, cooler light — best for outdoor photos before crowds build.
Istanbul Weather in August
Everything you need to know about Istanbul weather in August
Updated September 10, 2026
Turkey · Istanbul
Istanbul Weather in August
August in Istanbul is hot, humid and energetically busy. Expect daytime highs around 32°C (90°F), mild nights around 25°C, long sunny stretches, and the city at its most magical and most crowded Check the full climate tables below for monthly averages and packing cues.
- Avg high / low
- 32°C / 25°C
- 90F / 77F
- Precipitation
- 8mm
- 1 wet days
- Daylight
- 14 hrs
- mid-range daylight
Istanbul average temperatures through the year
AugustRest of the year
15°
16°
18°
21°
25°
29°
32°
32°
29°
24°
19°
16°
JAN
6 wet
FEB
6 wet
MAR
7 wet
APR
6 wet
MAY
4 wet
JUN
2 wet
JUL
1 wet
AUG
1 wet
SEP
3 wet
OCT
5 wet
NOV
7 wet
DEC
7 wet
Daytime highs in Celsius with wet days per month for Istanbul. August sits at 32°C with 1 wet days.
The short answer
August falls in Istanbul's hot summer. Daytime highs average 32°C (90°F) with nights near 25°C (77°F). Precipitation totals about 8mm across roughly 1 wet days. Settling snow is uncommon. Visiting works with flexible outdoor plans and a packing buffer Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
August climate in Istanbul
Monthly averages for Istanbul, Turkey.
- Day high
- 32°C
- 90°F
- Night low
- 25°C
- 77°F
- Precipitation
- 8mm
- 0.3 in
- Wet days
- 1
- rain or drizzle
- Sunrise
- 5:00am
- mid-August
- Sunset
- 7:00pm
- mid-range daylight
- Daylight
- 14 hrs
- 10 hrs sunshine
Averages based on long-run monthly climate normals. Last updated September 10, 2026.
Real weeks swing around the 29°C mean. Early August often sits near 31°C while the final week lands closer to 33°C. Pack a spare layer for that 1° drift rather than dressing only for the monthly average Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
Rain and drizzle usually arrive in pulses across the 1 wet days. Dry stretches between systems feel clearer and colder overnight. Use those gaps for outdoor sightseeing and keep indoor backups for the wetter clusters Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
What is the average temperature in Istanbul in August?
The average temperature in Istanbul in August is around 29°C (84°F), combining daytime highs of 32°C (90°F) with night lows of 25°C (77°F). The month warms steadily: the first days average highs near 31°C, while the final week typically tops out around 33°C with nights of 26°C.
Average daily high and low through August. The month warms by roughly 1 degrees start to finish.
How much does it rain in Istanbul in August?
Istanbul gets around 8mm (0.3in) of precipitation in August, spread over roughly 1 wet days. Wet spells typically last a day or two and clear to drier stretches in between Check the full climate tables below for monthly averages and packing cues.
48
48
56
48
32
16
8
8
24
40
56
56
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Average precipitation by month in millimetres. August's 8mm sits near the annual rhythm.
Average precipitation by hour of day in Istanbul
August precipitation in Istanbul falls fairly evenly around the clock, with a mild overnight and early-morning peak. There is no predictable afternoon-downpour pattern — check the day's forecast rather than timing outings by the clock Check the full climate tables below for monthly averages and packing cues.
12am6am12pm6pm12am
Relative share of August precipitation by hour of day. The distribution is fairly flat, with a mild overnight peak.
When is sunrise and sunset in Istanbul in August?
August daylight in Istanbul averages about 14 hours, mid-range daylight. Sunrise drifts from 5:00am to 4:50am across the month, while sunset holds near 7:00pm before edging toward 7:08pm. Plan outdoor sightseeing in the brighter midday window Check the full climate tables below for monthly averages and packing cues.
Sunrise and sunset through August. The shaded band is daylight Check the full climate tables below for monthly averages and packing cues.
How humid is Istanbul in August?
Relative humidity in Istanbul in August averages around 50 percent. At 32°C that usually feels manageable outdoors. Temperature and wind still drive packing more than humidity alone Check the full climate tables below for monthly averages and packing cues.
65
62
60
58
55
50
48
50
55
60
65
68
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Average relative humidity by month. August sits near 50%.
What is the weather like in Istanbul the rest of the year?
Istanbul moves from cooler months near 15°C highs through a warmer peak near 32°C. The best-weather stretch usually aligns with March and April. August sits in the hot summer arc with 32°C highs Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
Average high (coral) and low (navy) by month. The shaded band is the typical daily range; AUG is marked.
Is August a good time to visit Istanbul?
Depends — weather works with flexible plans. Here is the honest trade-off.
OverallSolid with flexible plans
WeatherHot and humid
CrowdsVery High
PricesPeak
Budget (per night)$350 to $500+
Book ahead2 to 3 months
August in Istanbul is defined by crowded beaches and 32°C days. Stays often land in the $350–$500+ range with peak season demand. The smartest move is to book about 2–3 months ahead and keep outdoor blocks in the brighter midday window Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
Pros
- 32°C highs suit hot days in Istanbul
- 10h average sunshine for daytime plans
- Very High crowds shape the August pace
- Peak season rates for stays and flights
Cons
- 1 wet days can pause outdoor sightseeing
- Humidity at 50% can feel heavier than the air temp
- Hotel rates climb fast mid-month
- Daylight near 14 hrs shortens evening walks
Travelling to Istanbul in August?
Book lodgings about 2–3 months ahead, then visit the busiest central sights right at opening on a weekday to skip the mid-afternoon crush first-timers always hit Check the full climate tables below for monthly averages and packing cues. Compare months on our Best Time to Visit Istanbul guide.
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What August actually feels like
August is Istanbul's hot summer in lived terms: crowded beaches. Most days feel cold, dry and often clear, with damper grey stretches arriving in bursts rather than settling in for the whole month Check the full climate tables below for monthly averages and packing cues.
The underestimated variable is the day–night temperature swing. It truncates outdoor evenings and pushes dinner earlier. Build one indoor spare block every day Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
Early August often starts near 31°C while the final week trends toward 33°C. That 1° drift is enough to change coat weight mid-trip. Recheck the forecast before packing day seven Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
Afternoons reach 32–33°C before an early sunset near the 14-hour daylight limit — plan open-air stops then.
Evenings cool quickly toward 25°C; shift to indoor dining and illuminated streets once the light drops.
August in Istanbul, week by week
Crowds and prices move more than the thermometer.
August 1–7
31°C (88°F)- Crowds
- Very High
- Prices
- Peak season
- Best for
- Quieter weekday exploring
August 8–14
32°C (90°F)- Crowds
- Very High
- Prices
- Peak season
- Best for
- Balanced weather window
August 15–21
32°C (90°F)- Crowds
- High
- Prices
- Peak season
- Best for
- Festive peak atmosphere
August 22–31
33°C (91°F)- Crowds
- High
- Prices
- Peak season
- Best for
- Late-month flexible plans
Temperatures are Istanbul monthly averages split across each window. Individual years vary by several degrees.
What to pack and wear for Istanbul in August
Light fabric, serious sun care
Pack for Istanbul in August around the 32°C / 25°C swing. The governing rule is ventilate and block UV. The one item worth buying before you fly is a breathable mid-layer Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
Essential
- Breathable shirts
- Sun hat
- SPF 50+ sunscreen
- Refillable bottle
Smart additions
- Scarf or buff
- Portable charger
- Clear tote for layers
- Lip balm SPF
Leave behind
- Thick parkas
- Wool sweaters
- Snow boots
Top places to visit in Istanbul in August
Outdoor icons with shade breaks
City centre · Free
Istanbul landmark walk
Go early on weekdays for quieter photos and softer light.
Add to your planWaterfront · Free
Harbour or river promenade
Golden hour is the calmest window Check the full climate tables below for monthly averages and packing cues.
Add to your planMuseum quarter · Paid
Flagship museum morning
Weekday openings beat weekend queues and wet-day backups.
Add to your planOld town · Free
Historic streets loop
Late morning light helps cold stone feel less harsh.
Add to your planPark · Free
Central green escape
Shade and benches make longer walks realistic Check the full climate tables below for monthly averages and packing cues.
Add to your planCovered market · Free
Indoor food hall backup
Ideal when wet days interrupt outdoor plans Check the full climate tables below for monthly averages and packing cues.
Add to your plan
Top places to stay in August
Base near the sights that matter in August
Best overall
Central core
Walkable to main sights with easier 14-hour daylight logistics Check the full climate tables below for monthly averages and packing cues.
Best value
One transit stop out
Lower rates than the core while staying close for very high evenings.
Local feel
Neighbourhood streets
Quieter nights and easier restaurant bookings than the busiest tourist blocks.
Top restaurants to visit in August
Breezy rooms and light seasonal plates
Downtown · Classic
Istanbul lunch counter
Hearty midday stop when outdoor plans run short on daylight.
Add to your planOld town · Cosy
Neighbourhood bistro
Low light and early dinners match short sunset windows Check the full climate tables below for monthly averages and packing cues.
Add to your planMarket · Casual
Covered market stalls
Fast warm food without a reservation on wet afternoons Check the full climate tables below for monthly averages and packing cues.
Add to your planRiverside · Scenic
Waterfront cafe
Daylight seating works best before the evening chill Check the full climate tables below for monthly averages and packing cues.
Add to your planArts district · Modern
Gallery-side kitchen
Pairs well with museum days when weather turns Check the full climate tables below for monthly averages and packing cues.
Add to your planResidential · Local
Corner noodle or soup spot
Simple, hot bowls that suit cold or humid evenings Check the full climate tables below for monthly averages and packing cues.
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Istanbul weather by month
How August compares. Every month links to its full weather guide.
| Month | Avg high | Wet days | Crowds | Cost | Overall | Best for |
|---|---|---|---|---|---|---|
| January | 15°C (59°F) | 6 | Low | Budget | Okay | Mild winter, fewer crowds |
| February | 16°C (61°F) | 6 | Low | Budget | Okay | Off-season bargains |
| March | 18°C (64°F) | 7 | Medium | Mid | Great | Spring blooms, mild |
| April | 21°C (70°F) | 6 | High | High | Great | Ideal sightseeing |
| May | 25°C (77°F) | 4 | High | High | Great | Warm and sunny |
| June | 29°C (84°F) | 2 | High | Peak | Great | Beach season begins |
| July | 32°C (90°F) | 1 | Very High | Peak | Okay | Peak summer heat |
| August | 32°C (90°F) | 1 | Very High | Peak | Okay | Hot — this guide |
| September | 29°C (84°F) | 3 | High | High | Great | Still warm, fewer crowds |
| October | 24°C (75°F) | 5 | Medium | Mid | Great | Perfect weather |
| November | 19°C (66°F) | 7 | Low | Mid | Great | Shoulder season |
| December | 16°C (61°F) | 7 | Medium | Mid | Okay | Mild winter festivities |
Temperatures shown as Istanbul monthly averages.
August vs July: August averages 29°C versus 29°C in July — a 0°C warm-up. Crowds shift from Very High to Very High while pricing moves into peak season. Pick August if you want crowded beaches Check the full climate tables below for monthly averages and packing cues.
August vs September: September trends to 26°C, 3°C cooler than August. Expect high crowds and high season rates. Pick September if you prefer still warm, fewer crowds Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
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Istanbul in August FAQ
Everything you need to know about Istanbul weather in August
Daytime highs average 32°C (90°F) and nights fall near 25°C (77°F). The monthly mean sits around 29°C. Expect a 1° swing from early to late August Check the full climate tables below for monthly averages and packing cues Check the full climate tables below for monthly averages and packing cues.
How we work this out
Temperature and rainfall figures are 30-year meteorological averages. Crowd levels come from national tourism arrival data. Price bands reflect mid-range accommodation and economy flights from major long-haul cities, sampled quarterly.
Last updated September 10, 2026 · Written by the Holicay travel team