İznik weather in July

In July, İznik sees average daytime highs of 29°C and overnight lows near 18°C, with 28 mm of rain across 4.9 wet days and about 14.6 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 75% 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 İznik's 1st-clearest and 2nd-windiest month. For the whole year in context, see İznik's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
18°
11th coldest
Rainfall
28 mm
4.9 wet days
Daylight
14 h 36 min
4:48 AM – 7:25 PM
Cloud cover
24%
1st clearest
Wind
8 km/h
2nd windiest
Solar energy
6.77 kWh/m²
Travel score
6.6
out of 10

İznik is district and town in the Province of Bursa, Turkey.

Density
30/km²
people per km²

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 28°C in the first days to 30°C by the end.

A typical July day in İznik reaches about 29°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 33°C. Set against its neighbours, July runs about 3°C warmer than June and on par with August.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12817
22817
32817
42817
52917
62917
72917
82917
92918
102918
112918
122918
132918
142918
152918
162918
172918
182918
192918
202918
212918
222918
233018
243019
253019
263019
273019
283019
293019
303019
313019

How July really feels in İznik

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.

İznik 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 / 7411.75.99.41.1
Feb / 6311.15.110.41.8
Mar12° / 7512.43.211.73.2
Apr17° / 6010.50.5135.5
May22° / 11°569.2014.27.0
Jun26° / 15°579.4014.87.1
Jul29° / 18°284.9014.66.6
Aug29° / 18°254.2013.66.5
Sep26° / 15°406.8012.37.7
Oct21° / 11°578.6010.96.7
Nov15° / 578.61.19.84.5
Dec / 7811.949.21.8

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 75% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of July, with mostly cloudy or overcast conditions the remaining 11%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28713
38713
48812
58812
68713
78713
88713
98713
108713
118713
128713
138713
148713
158713
168812
178812
188812
199010
209010
219010
22928
23928
24928
25928
26937
27946
28946
29946
30946
31937

Chance of precipitation in July

Any precipitation

İznik gets around 28 mm of rain over 4.9 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 17% and peaks near 21% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
121
220
319
419
518
618
718
818
918
1018
1118
1218
1318
1418
1518
1618
1718
1818
1918
2017
2117
2216
2316
2415
2515
2615
2714
2814
2914
3014
3114

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 43% of days. Sticky, muggy-or-worse air turns up on roughly 22% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1133640110
2133640120
3123540120
4123540130
5123440140
6113440140
7113341150
8103341160
993242170
1093142171
1183143181
1273043181
1373044191
1462944191
1562944201
1662845211
1752845211
1852845221
1952745231
2042745231
2142645241
2242644251
2342544261
2432444271
2532444281
2632343291
2732243312
2832143322
2932142332
3032042342
3121942342

Wind in July

Winds average 8 km/h in July.

Across July, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
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 4:39 AM to 5:01 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)
114.94:397:30
214.84:397:30
314.84:407:30
414.84:407:30
514.84:417:30
614.84:417:29
714.84:427:29
814.84:437:29
914.84:437:28
1014.74:447:28
1114.74:447:28
1214.74:457:27
1314.74:467:27
1414.74:477:26
1514.64:477:26
1614.64:487:25
1714.64:497:25
1814.64:507:24
1914.64:507:24
2014.54:517:23
2114.54:527:22
2214.54:537:21
2314.44:547:21
2414.44:557:20
2514.44:567:19
2614.44:567:18
2714.34:577:17
2814.34:587:16
2914.34:597:15
3014.25:007:14
3114.25:017:13

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.77 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.55 kWh/m² to a high of 6.77 kWh/m² in July across the year — July's 6.77 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.9Intense
26.9Intense
36.9Intense
46.9Intense
56.9Intense
66.9Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.5Intense
316.5Intense
Planning a trip in July

Is July a good time to visit İznik?

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

6.6
Sightseeing
5th-best month of the year
8.3
Beach & pool
2nd-best month of the year

July is a reasonable time to visit İznik for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for İznik in July

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

In July, İznik sees daytime highs around 29°C and nights near 18°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

Sea temperature near İznik in July

The nearest coast averages about 23°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 55 km away) is warmest in August at about 24°C and coldest in February near 8°C.

It's comfortable for a long swim from Jun 12 to Oct 6 — about 3.8 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan9Bracing
Feb8Bracing
Mar9Bracing
Apr11Bracing
May16Cool
Jun21Refreshing
Jul23Refreshing
Aug24Warm
Sep22Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in İznik 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 İznik peaks around August 10 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highModerateLowAug 10UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr7Very high
May7Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in İznik 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 İznik 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 İznik?

İznik sits at 40.4°N, 29.7°E, 99 m above sea level, in Turkey. The nearest listed city is Yenişehir, 19 km away.

Topography around İznik

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

Within 3 km, the terrain around İznik has significant variations in elevation — a maximum elevation change of 319 m around an average of 114 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,174 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,527 m.

The land around İznik is covered by trees (40%) and water (28%) within 3 km, trees (54%) within 16 km, and trees (57%) within 80 km.

3 km
319 m
16 km
1,174 m
80 km
2,527 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
July weather nearby: Yenişehir 19 km · Osmaneli 26 km · Karamürsel 31 km · Gölcük 33 km · Orhangazi 36 km · Derince 37 km · Körfez 38 km · Bilecik 39 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 İznik (40.4286°, 29.7211°, elevation 99 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).