İzmit weather in July

In July, İzmit sees average daytime highs of 27°C and overnight lows near 18°C, with 43 mm of rain across 6.4 wet days and about 14.6 hours of daylight. It is the 2nd-warmest and 11th-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 72% of the time in July, and the air most often feels humid.

Daylight stretches from about 14 h 54 min at the start of July to 14 h 12 min by month's end. Set against the rest of the year, July is İzmit's 1st-clearest and 2nd-windiest month. For the whole year in context, see İzmit's year-round climate.

Daytime high
27°
2nd warmest
Overnight low
18°
11th coldest
Rainfall
43 mm
6.4 wet days
Daylight
14 h 42 min
4:46 AM – 7:26 PM
Cloud cover
28%
1st clearest
Wind
8 km/h
2nd windiest
Solar energy
6.71 kWh/m²
Travel score
7.6
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 July

Average highAverage lowShaded bands: 10–90% of days

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

A typical July 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 30°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12617
22617
32617
42717
52717
62717
72717
82717
92717
102717
112717
122717
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232718
242718
252818
262818
272819
282819
292819
302819
312819

How July really feels in İzmit

Once humidity and wind are folded in, July 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

July 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 July compares with the rest of the year at a glance. July is the 2nd-warmest and 11th-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 72% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of July, with mostly cloudy or overcast conditions the remaining 15%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18416
28416
38416
48416
58416
68317
78317
88317
98317
108218
118218
128317
138317
148317
158317
168317
178416
188416
198416
208614
218614
228713
238713
248812
258812
268812
278812
288812
298911
308911
318812

Chance of precipitation in July

Any precipitation

İzmit gets around 43 mm of rain over 6.4 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 22% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
124
224
323
423
522
622
722
823
923
1023
1123
1223
1324
1424
1524
1624
1723
1823
1923
2022
2122
2221
2320
2420
2519
2619
2719
2819
2919
3019
3119

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the humid band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 41% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
132743261
232742261
332642271
432641281
532641292
632541302
722541302
822441312
922341322
1022241322
1122241333
1222141343
1322141343
1422040353
1511940363
1611940363
1711840374
1811840384
1911739394
2011639394
2111639405
2211538415
2311437426
2411337426
2511336437
2611236447
2711235458
2811134459
2911134469
30110334710
31110334710

Wind in July

Winds average 8 km/h in July.

Across July, 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 July

DaylightNight

Daylight runs from about 14 h 54 min at the start of July to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 4:37 AM to 4:59 AM, and sunset from 7:30 PM to 7:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:377:30
214.94:377:30
314.94:387:30
414.94:387:30
514.84:397:30
614.84:397:30
714.84:407:29
814.84:417:29
914.84:417:29
1014.84:427:28
1114.84:437:28
1214.74:437:28
1314.74:447:27
1414.74:457:27
1514.74:467:26
1614.74:467:26
1714.64:477:25
1814.64:487:24
1914.64:497:24
2014.64:507:23
2114.54:507:22
2214.54:517:21
2314.54:527:21
2414.44:537:20
2514.44:547:19
2614.44:557:18
2714.44:567:17
2814.34:577:16
2914.34:587:15
3014.34:587:14
3114.24:597:13

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.71 kWh/m² — the sunniest month for solar.

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 — July's 6.71 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.7Intense
166.7Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in July

Is July a good time to visit İzmit?

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

7.6
Sightseeing
1st-best month of the year
7.6
Beach & pool
2nd-best month of the year

July 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 July

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

In July, İzmit sees daytime highs around 27°C and nights near 18°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near İzmit in July

The nearest coast averages about 24°C in July — 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 July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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
July 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).