Başakşehir weather in December

In December, Başakşehir sees average daytime highs of 10°C and overnight lows near 8°C, with 84 mm of precipitation across 12 wet days and about 9.1 hours of daylight. It is the 9th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 12°C in the first days to 9°C by the end. The sky is clear or mostly clear about 22% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 18 min at the start of December to 9 h 06 min by month's end. Set against the rest of the year, December is Başakşehir's 12th-clearest and 1st-windiest month. For the whole year in context, see Başakşehir's year-round climate.

Daytime high
10°
9th warmest
Overnight low
4th coldest
Precipitation
84 mm
12 wet days
Daylight
9 h 06 min
7:29 AM – 4:33 PM
Cloud cover
69%
12th clearest
Wind
20 km/h
1st windiest
Solar energy
1.46 kWh/m²
Travel score
2.3
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 12°C in the first days to 9°C by the end.

A typical December day in Başakşehir reaches about 10°C in the afternoon and slips back to 8°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 15°C. Set against its neighbours, December runs about 4°C cooler than November and about 2°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1129
2129
3129
4129
5129
6119
7118
8118
9118
10118
11118
12118
13118
14108
15107
16107
17107
18107
19107
20107
21107
22107
23107
24107
25107
26107
2797
2897
2997
3096
3196

Başakşehir weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7011.21.89.41.5
Feb / 6010.11.910.41.6
Mar10° / 639.50.611.72.5
Apr14° / 10°396.9013.14.5
May19° / 15°295.9014.36.9
Jun24° / 19°254.5014.98.3
Jul27° / 22°162.7014.78.5
Aug27° / 22°132.4013.68.4
Sep24° / 19°375.3012.38.1
Oct19° / 16°657.3010.96.6
Nov14° / 11°618.609.74.4
Dec10° / 841219.12.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23664
33664
43664
53664
63664
73664
83565
93565
103565
113466
123466
133466
143466
153466
163466
173466
183466
193367
203367
213367
223367
233466
243466
253466
263466
273565
283466
293565
303565
313565

Chance of precipitation in December

Any precipitationSnow

Başakşehir gets around 84 mm of rain and snow over 12 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 39% and peaks near 41% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1351
2361
3361
4371
5371
6372
7382
8382
9382
10392
11393
12403
13403
14403
15403
16403
17403
18403
19403
20393
21393
22394
23394
24404
25404
26405
27405
28405
29415
30416
31416

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 20 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 19 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
520light breeze
620light breeze
720light breeze
820light breeze
920light breeze
1020light breeze
1120light breeze
1220light breeze
1320light breeze
1420light breeze
1520light breeze
1620light breeze
1720breezy
1820breezy
1920breezy
2020breezy
2120breezy
2220breezy
2320breezy
2420breezy
2520breezy
2620breezy
2720breezy
2820breezy
2920breezy
3020breezy
3120breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 18 min at the start of December to 9 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:17 AM to 7:36 AM, and sunset from 4:32 PM to 4:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:174:32
29.27:184:32
39.27:194:32
49.27:204:32
59.27:214:32
69.27:224:32
79.27:224:32
89.17:234:32
99.17:244:32
109.17:254:32
119.17:264:32
129.17:274:32
139.17:274:32
149.17:284:32
159.17:294:32
169.17:294:33
179.07:304:33
189.07:314:33
199.07:314:34
209.07:324:34
219.07:324:34
229.07:334:35
239.07:334:35
249.07:344:36
259.07:344:36
269.07:344:37
279.07:354:38
289.17:354:38
299.17:354:39
309.17:354:40
319.17:364:40

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.46 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.46 kWh/m² to a high of 6.92 kWh/m² in July across the year — December's 1.46 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.5Dim
51.5Dim
61.5Dim
71.5Dim
81.5Dim
91.5Dim
101.5Dim
111.5Dim
121.5Dim
131.5Dim
141.4Dim
151.4Dim
161.4Dim
171.4Dim
181.4Dim
191.4Dim
201.4Dim
211.4Dim
221.4Dim
231.4Dim
241.5Dim
251.5Dim
261.5Dim
271.5Dim
281.5Dim
291.5Dim
301.5Dim
311.5Dim
Planning a trip in December

Is December a good time to visit Başakşehir?

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

2.3
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Başakşehir.

What to pack for Başakşehir in December

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

In December, Başakşehir sees daytime highs around 10°C and nights near 8°C. Pack a warm layer. Worth having: rain gear and a windbreaker. About 12 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Başakşehir in December

The nearest coast averages about 12°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 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 11 to Oct 7 — about 3.9 months when the water holds above 20°C.

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

UV index in Başakşehir in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Başakşehir peaks around July 14 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 highModerateLowJul 14UV 9Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr7High
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Başakşehir in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Başakşehir 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 Başakşehir?

Başakşehir sits at 41.1°N, 28.8°E, 155 m above sea level, in Turkey. The nearest listed city is Sultangazi, 6.0 km away.

Topography around Başakşehir

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

Within 3 km, the terrain around Başakşehir has only modest variations in elevation — a maximum elevation change of 177 m around an average of 132 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 249 m; within 80 km, large variations in elevation — a maximum elevation change of 963 m.

The land around Başakşehir is covered by artificial surfaces (48%) and grassland (27%) within 3 km, artificial surfaces (39%) and trees (30%) within 16 km, and water (58%) and trees (23%) within 80 km.

3 km
177 m
16 km
249 m
80 km
963 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Sultangazi 6.0 km · Bağcılar 9.0 km · Arnavutköy 10 km · Esenler 10 km · Bahçelievler 13 km · Küçükçekmece 13 km · Esenyurt 13 km · Merter Keresteciler 13 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 Başakşehir (41.106°, 28.791°, elevation 155 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).