Kaynaşlı weather in December

In December, Kaynaşlı sees average daytime highs of 6°C and overnight lows near -1°C, with 105 mm of precipitation across 13.9 wet days and about 9.1 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 8°C in the first days to 5°C by the end. The sky is clear or mostly clear about 25% 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 Kaynaşlı's 9th-clearest and 1st-windiest month. For the whole year in context, see Kaynaşlı's year-round climate.

Daytime high
10th warmest
Overnight low
-1°
3rd coldest
Precipitation
105 mm
13.9 wet days
Daylight
9 h 06 min
7:18 AM – 4:24 PM
Cloud cover
66%
9th clearest
Wind
6 km/h
1st windiest
Solar energy
1.69 kWh/m²
Travel score
0.6
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 8°C in the first days to 5°C by the end.

A typical December day in Kaynaşlı reaches about 6°C in the afternoon and slips back to -1°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between -0°C and 12°C. Set against its neighbours, December runs about 5°C cooler than November and about 2°C warmer than January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
191
291
380
480
580
680
780
870
970
1070
117-1
127-1
136-1
146-1
156-1
166-1
176-1
186-2
196-2
206-2
216-2
225-2
235-2
245-2
255-2
265-2
275-2
285-2
295-2
305-2
315-2

How December really feels in Kaynaşlı

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 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
31
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Kaynaşlı weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°10014.410.69.40.0
Feb / -2°9614.29.110.40.4
Mar10° / 113157.611.71.9
Apr14° / 104141.813.13.8
May19° / 11314.8014.25.4
Jun22° / 12°10013.2014.96.4
Jul24° / 14°508.5014.67.6
Aug25° / 15°548.1013.67.6
Sep22° / 11°738.9012.37.1
Oct18° / 9811.50.410.95.5
Nov12° / 8210.53.29.73.1
Dec / -1°10513.97.99.10.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24060
33961
43961
53961
63763
73763
83763
93763
103664
113664
123565
133664
143664
153664
163664
173565
183664
193763
203664
213664
223664
233565
243565
253565
263565
273367
283268
293268
303268
313268

Chance of precipitation in December

Any precipitationSnow

Kaynaşlı gets around 105 mm of rain and snow over 13.9 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 45% and peaks near 48% on the wettest days, and about 8 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14218
24318
34319
44420
54420
64421
74522
84522
94523
104523
114524
124524
134525
144526
154526
164526
174527
184527
194528
204528
214528
224529
234529
244529
254630
264630
274731
284732
294832
304833
314833

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 (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 6 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
316calm

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 7:06 AM to 7:24 AM, and sunset from 4:23 PM to 4:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:064:23
29.37:074:23
39.37:084:23
49.27:094:23
59.27:094:23
69.27:104:23
79.27:114:22
89.27:124:22
99.27:134:22
109.17:144:23
119.17:154:23
129.17:154:23
139.17:164:23
149.17:174:23
159.17:174:23
169.17:184:24
179.17:194:24
189.17:194:24
199.17:204:25
209.17:204:25
219.17:214:25
229.17:214:26
239.17:224:26
249.17:224:27
259.17:234:27
269.17:234:28
279.17:234:29
289.17:244:29
299.17:244:30
309.17:244:31
319.17:244:31

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.69 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 6.85 kWh/m² in July across the year — December's 1.69 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.8Dim
31.8Dim
41.8Dim
51.8Dim
61.8Dim
71.7Dim
81.7Dim
91.7Dim
101.7Dim
111.7Dim
121.7Dim
131.7Dim
141.7Dim
151.7Dim
161.7Dim
171.7Dim
181.7Dim
191.7Dim
201.7Dim
211.7Dim
221.7Dim
231.7Dim
241.7Dim
251.7Dim
261.7Dim
271.7Dim
281.7Dim
291.7Dim
301.7Dim
311.7Dim
Planning a trip in December

Is December a good time to visit Kaynaşlı?

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

0.6
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 Kaynaşlı.

What to pack for Kaynaşlı in December

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

In December, Kaynaşlı sees daytime highs around 6°C and nights near -1°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 14 days see rain.

a warm layerrain geara heavy coat

Sea temperature near Kaynaşlı 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 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 12 — about 4.1 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan9Bracing
Feb7Bracing
Mar8Bracing
Apr11Bracing
May16Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep23Refreshing
Oct20Cool
Nov15Cool
Dec12Bracing

UV index in Kaynaşlı in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kaynaşlı peaks around August 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateLowAug 10UV 9Dec 18UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar3Moderate
Apr7High
May7Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Kaynaşlı 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 Kaynaşlı is worst in May — around 17 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 916 µg/m³Dec 2310 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar16Moderate
Apr16Moderate
May17Moderate
Jun13Moderate
Jul11Good
Aug10Good
Sep10Good
Oct11Good
Nov11Good
Dec10Good
Location & terrain

Where is Kaynaşlı?

Kaynaşlı sits at 40.8°N, 31.3°E, 362 m above sea level, in Turkey. The nearest listed city is Düzce, 15 km away.

Topography around Kaynaşlı

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

Within 3 km, the terrain around Kaynaşlı has significant variations in elevation — a maximum elevation change of 582 m around an average of 474 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,578 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,359 m.

The land around Kaynaşlı is covered by trees (79%) within 3 km, trees (88%) within 16 km, and trees (63%) within 80 km.

3 km
582 m
16 km
1,578 m
80 km
2,359 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Düzce 15 km · Bolu 24 km · Akçakoca 39 km · Alaplı 46 km · Hendek 48 km · Kocaali 51 km · Karasu Mahallesi 56 km · Ereğli 58 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 Kaynaşlı (40.7692°, 31.3221°, elevation 362 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).