Çatalca weather in October

In October, Çatalca sees average daytime highs of 20°C and overnight lows near 14°C, with 87 mm of rain across 9.1 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 17°C by the end. The sky is clear or mostly clear about 34% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 12 min by month's end. Set against the rest of the year, October is Çatalca's 7th-clearest and 7th-windiest month. For the whole year in context, see Çatalca's year-round climate.

Daytime high
20°
6th warmest
Overnight low
14°
8th coldest
Rainfall
87 mm
9.1 wet days
Daylight
10 h 54 min
6:25 AM – 5:18 PM
Cloud cover
55%
7th clearest
Wind
16 km/h
7th windiest
Solar energy
3 kWh/m²
Travel score
6.4
out of 10

Çatalca is district of İstanbul, northwestern Turkey.

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 17°C by the end.

A typical October day in Çatalca reaches about 20°C in the afternoon and slips back to 14°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 24°C. Set against its neighbours, October runs about 5°C cooler than September and about 5°C warmer than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12216
22216
32216
42216
52216
62216
72115
82115
92115
102115
112115
122015
132015
142015
152014
162014
171914
181914
191914
201914
211913
221813
231813
241813
251813
261812
271712
281712
291712
301712
311712

How October really feels in Çatalca

Once humidity and wind are folded in, October 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

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

Çatalca weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7611.52.89.41.4
Feb / 7011.12.810.41.7
Mar11° / 6910.5111.72.8
Apr15° / 457.5013.15.0
May20° / 14°376.6014.37.1
Jun25° / 18°335.7014.97.9
Jul28° / 21°264.3014.77.8
Aug28° / 22°224.7013.67.5
Sep24° / 18°546.8012.37.7
Oct20° / 14°879.1010.96.4
Nov15° / 10°699.109.74.4
Dec10° / 9312.71.79.12.1

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 17% of October, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26436
36337
46238
56139
65941
75842
85743
95545
105446
115347
125248
135050
145050
154951
164852
174753
184753
194753
204654
214555
224654
234654
244654
254555
264555
274555
284555
294555
304654
314654

Chance of precipitation in October

Any precipitation

Çatalca gets around 87 mm of rain over 9.1 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
227
327
427
527
627
728
828
928
1029
1129
1230
1330
1431
1531
1631
1732
1832
1932
2032
2132
2232
2331
2431
2531
2631
2730
2830
2930
3029
3129

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 53% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13337264
23437253
33538243
43638233
53738222
63938212
74038202
84138191
94238181
104438171
114538161
124638151
134738140
144938130
155038120
165237110
175337100
18553690
19563590
20583480
21603370
22613270
23643060
24652960
25672850
26702640
27712540
28742330
29752230
30772120
31782020

Wind in October

Winds average 16 km/h in October.

Across October, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over October. Sunrise moves from 6:08 AM to 6:43 AM, and sunset from 5:42 PM to 4:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:085:42
211.56:095:40
311.56:105:39
411.46:115:37
511.46:125:35
611.36:145:34
711.36:155:32
811.26:165:30
911.26:175:29
1011.26:185:27
1111.16:195:25
1211.16:205:24
1311.06:215:22
1411.06:235:21
1510.96:245:19
1610.96:255:18
1710.86:265:16
1810.86:275:15
1910.76:285:13
2010.76:295:12
2110.76:315:10
2210.66:325:09
2310.66:335:07
2410.56:345:06
2510.56:355:05
2610.46:375:03
2710.46:385:02
2810.46:395:01
2910.36:404:59
3010.36:414:58
3110.26:434:57

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3 kWh/m².

For context, solar energy here swings from a low near 1.46 kWh/m² to a high of 6.99 kWh/m² in June across the year — October's 3 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.7Moderate
33.6Moderate
43.6Moderate
53.5Moderate
63.5Moderate
73.4Moderate
83.4Moderate
93.3Moderate
103.3Moderate
113.2Moderate
123.2Moderate
133.1Moderate
143.1Moderate
153.0Moderate
163.0Moderate
172.9Moderate
182.9Moderate
192.9Moderate
202.8Moderate
212.8Moderate
222.7Moderate
232.7Moderate
242.6Moderate
252.6Moderate
262.6Moderate
272.5Moderate
282.5Moderate
292.5Moderate
302.5Moderate
312.4Moderate
Planning a trip in October

Is October a good time to visit Çatalca?

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

6.4
Sightseeing
6th-best month of the year
3.1
Beach & pool
6th-best month of the year

October is a reasonable time to visit Çatalca for sightseeing.

What to pack for Çatalca in October

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

In October, Çatalca sees daytime highs around 20°C and nights near 14°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Çatalca in October

The nearest coast averages about 19°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 29 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 10 to Oct 7 — about 3.9 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan8Bracing
Feb7Bracing
Mar8Bracing
Apr10Bracing
May16Cool
Jun21Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov15Bracing
Dec11Bracing

UV index in Çatalca in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Çatalca peaks around July 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 13UV 9Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr7Very high
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Çatalca in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Çatalca is worst in March — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 2015 µg/m³Jul 189 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar16Moderate
Apr15Moderate
May12Moderate
Jun10Good
Jul9Good
Aug10Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Çatalca?

Çatalca sits at 41.1°N, 28.5°E, 64 m above sea level, in Turkey. The nearest listed city is Kavaklı, 12 km away.

Topography around Çatalca

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

Within 3 km, the terrain around Çatalca has significant variations in elevation — a maximum elevation change of 315 m around an average of 110 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 325 m; within 80 km, large variations in elevation — a maximum elevation change of 944 m.

The land around Çatalca is covered by trees (32%), grassland (26%) and cropland (25%) within 3 km, cropland (43%) within 16 km, and water (58%) within 80 km.

3 km
315 m
16 km
325 m
80 km
944 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Kavaklı 12 km · Tepecik 15 km · Mimarsinan 16 km · Büyükçekmece 17 km · Silivri 19 km · Gürpınar 21 km · Esenyurt 22 km · Beylikdüzü 23 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 Çatalca (41.1407°, 28.4597°, elevation 64 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).