İzmit weather in August

In August, İzmit sees average daytime highs of 27°C and overnight lows near 18°C, with 41 mm of rain across 6.5 wet days and about 13.6 hours of daylight. It is the 1st-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 70% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 12 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is İzmit's 2nd-clearest and 1st-windiest month. For the whole year in context, see İzmit's year-round climate.

Daytime high
27°
1st warmest
Overnight low
18°
12th coldest
Rainfall
41 mm
6.5 wet days
Daylight
13 h 36 min
5:15 AM – 6:53 PM
Cloud cover
29%
2nd clearest
Wind
8 km/h
1st windiest
Solar energy
5.92 kWh/m²
Travel score
7.5
out of 10

İzmit is ancient city of Bithynia in modern-day Turkey.

Founded
~263 BCE

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical August day in İzmit reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°C. Set against its neighbours, August runs on par with July and about 3°C warmer than September.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12819
22819
32819
42819
52819
62819
72819
82819
92819
102819
112819
122819
132819
142819
152819
162818
172818
182818
192718
202718
212718
222718
232718
242718
252718
262718
272717
282717
292717
302617
312617

How August really feels in İzmit

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

İzmit weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 101147.29.40.9
Feb / 8913.26.110.41.5
Mar12° / 9813.63.711.72.8
Apr16° / 7611.70.713.15.0
May21° / 11°7310.9014.26.5
Jun25° / 15°7610.6014.97.1
Jul27° / 18°436.4014.67.6
Aug27° / 18°416.5013.67.5
Sep24° / 15°618.4012.37.4
Oct19° / 11°9011.1010.96.1
Nov14° / 8010.41.29.74.0
Dec / 11013.34.39.11.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 70% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 15% of August, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18812
28812
38812
48713
58713
68713
78614
88713
98713
108614
118614
128614
138515
148515
158515
168515
178515
188515
198515
208515
218515
228416
238416
248416
258317
268218
278119
288119
298020
308020
318020

Chance of precipitation in August

Any precipitation

İzmit gets around 41 mm of rain over 6.5 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 21% and peaks near 27% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
119
219
319
419
519
619
719
819
919
1019
1119
1219
1319
1419
1519
1619
1719
1820
1920
2020
2120
2221
2321
2422
2523
2624
2724
2825
2926
3026
3127

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the muggy band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
119324710
219324811
319324811
419324711
519324711
619324711
719334611
819334611
9110344510
10110344410
11210354310
1221136439
1321137429
1421238418
1521338408
1621339397
1721440386
1821540376
1921641375
2021642364
2121742354
2221843353
2321843343
2421943332
2532044322
2632144302
2742243291
2852343281
2962443261
3072542251
3192642231

Wind in August

Winds average 8 km/h in August, the windiest month of the year.

Across August, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 12 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 5:00 AM to 5:30 AM, and sunset from 7:12 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:007:12
214.25:017:11
314.15:027:10
414.15:037:09
514.15:047:08
614.05:057:07
714.05:067:05
813.95:077:04
913.95:087:03
1013.95:097:02
1113.85:107:00
1213.85:116:59
1313.85:126:58
1413.75:136:56
1513.75:146:55
1613.65:156:53
1713.65:166:52
1813.65:176:51
1913.55:186:49
2013.55:196:48
2113.45:206:46
2213.45:216:45
2313.35:226:43
2413.35:236:42
2513.35:246:40
2613.25:256:38
2713.25:266:37
2813.15:276:35
2913.15:286:33
3013.05:296:32
3113.05:306:30

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.92 kWh/m².

For context, solar energy here swings from a low near 1.52 kWh/m² to a high of 6.71 kWh/m² in July across the year — August's 5.92 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.2Intense
96.2Intense
106.2Intense
116.1Intense
126.1Intense
136.0Intense
146.0Intense
156.0Bright
166.0Bright
175.9Bright
185.9Bright
195.8Bright
205.8Bright
215.8Bright
225.7Bright
235.7Bright
245.6Bright
255.6Bright
265.5Bright
275.5Bright
285.4Bright
295.4Bright
305.3Bright
315.3Bright
Planning a trip in August

Is August a good time to visit İzmit?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.5
Sightseeing
2nd-best month of the year
7.8
Beach & pool
1st-best month of the year

August is one of the better times to visit İzmit for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for İzmit in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, İzmit sees daytime highs around 27°C and nights near 18°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near İzmit in August

The nearest coast averages about 25°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 40 km away) is warmest in August at about 25°C and coldest in February near 7°C.

It's comfortable for a long swim from Jun 11 to Oct 10 — about 4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan9Bracing
Feb7Bracing
Mar8Bracing
Apr10Bracing
May16Cool
Jun21Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov15Cool
Dec11Bracing

UV index in İzmit in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in İzmit peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr7High
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in İzmit in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in İzmit is worst in March — around 16 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 2316 µg/m³Dec 198 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar16Moderate
Apr16Moderate
May15Moderate
Jun13Moderate
Jul10Good
Aug10Good
Sep10Good
Oct10Good
Nov10Good
Dec8Good
Location & terrain

Where is İzmit?

İzmit sits at 40.8°N, 29.9°E, 19 m above sea level, in Turkey. The nearest listed city is Derince, 10 km away.

Topography around İzmit

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of İzmit.

Within 3 km, the terrain around İzmit has significant variations in elevation — a maximum elevation change of 272 m around an average of 60 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 991 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,739 m.

The land around İzmit is covered by artificial surfaces (48%) and water (26%) within 3 km, trees (54%) within 16 km, and trees (51%) and water (24%) within 80 km.

3 km
272 m
16 km
991 m
80 km
1,739 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Derince 10 km · Gölcük 11 km · Körfez 12 km · Karamürsel 28 km · Sapanca 30 km · Kandıra 39 km · Adapazarı 40 km · İznik 41 km

Turkey travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$18,599
2025
Happiness
5.3 / 10
World Happiness, 2025
Homicide rate
3.2
per 100k, 2023
Road deaths
6.7
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 488
Religion
Muslim 100%other 0%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for İzmit (40.765°, 29.9293°, elevation 19 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).