Sinop weather in December

In December, Sinop sees average daytime highs of 11°C and overnight lows near 7°C, with 95 mm of precipitation across 14 wet days and about 9 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 10°C by the end. The sky is clear or mostly clear about 20% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 12 min at the start of December to 9 hours by month's end. Set against the rest of the year, December is Sinop's 10th-clearest and 5th-windiest month. For the whole year in context, see Sinop's year-round climate.

Daytime high
11°
9th warmest
Overnight low
4th coldest
Precipitation
95 mm
14 wet days
Daylight
9 hours
7:07 AM – 4:04 PM
Cloud cover
68%
10th clearest
Wind
16 km/h
5th windiest
Solar energy
1.45 kWh/m²
Travel score
2.3
out of 10

Sinop is central district and city in Sinop Province, Turkey.

Air quality
Elevated
PM10 50.2 µg/m³ · 2019

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

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 10°C by the end.

A typical December day in Sinop reaches about 11°C in the afternoon and slips back to 7°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
4128
5128
6128
7128
8118
9118
10118
11118
12117
13117
14117
15117
16107
17107
18107
19107
20107
21107
22107
23107
24107
25106
26106
27106
28106
29106
30106
31106

Sinop 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 / 7613.32.49.31.5
Feb / 6111.22.310.31.4
Mar10° / 6211.30.611.72.0
Apr12° / 448.9013.13.5
May17° / 14°306.2014.36.1
Jun22° / 19°214.60158.0
Jul25° / 22°173.1014.78.7
Aug26° / 23°214.1013.78.4
Sep23° / 19°457012.37.7
Oct19° / 15°739.8010.96.1
Nov14° / 11°7310.50.19.64.2
Dec11° / 95141.392.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23763
33763
43763
53664
63664
73664
83565
93565
103565
113466
123466
133466
143466
153466
163466
173466
183367
193367
203367
213367
223367
233268
243268
253169
263169
273169
283169
293169
302971
312971

Chance of precipitation in December

Any precipitationSnow

Sinop gets around 95 mm of rain and snow over 14 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 45% and peaks near 47% on the wettest days, and about 1 day brings snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1401
2401
3411
4412
5422
6422
7432
8443
9443
10453
11453
12463
13463
14464
15474
16474
17474
18474
19474
20475
21475
22475
23475
24466
25466
26476
27477
28477
29477
30467
31468

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 16 km/h in December.

Across December, 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
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light 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 December

DaylightNight

Daylight runs from about 9 h 12 min at the start of December to 9 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 6:54 AM to 7:13 AM, and sunset from 4:04 PM to 4:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.26:544:04
29.16:554:04
39.16:564:04
49.16:574:03
59.16:584:03
69.16:594:03
79.17:004:03
89.07:014:03
99.07:024:03
109.07:024:03
119.07:034:03
129.07:044:03
139.07:054:03
149.07:064:04
159.07:064:04
169.07:074:04
178.97:084:04
188.97:084:05
198.97:094:05
208.97:094:05
218.97:104:06
228.97:104:06
238.97:114:07
248.97:114:07
258.97:124:08
268.97:124:08
278.97:124:09
289.07:134:10
299.07:134:10
309.07:134:11
319.07:134:12

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.45 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.45 kWh/m² to a high of 6.7 kWh/m² in July across the year — December's 1.45 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.6Dim
51.5Dim
61.5Dim
71.5Dim
81.5Dim
91.5Dim
101.5Dim
111.5Dim
121.5Dim
131.4Dim
141.4Dim
151.4Dim
161.4Dim
171.4Dim
181.4Dim
191.4Dim
201.4Dim
211.4Dim
221.4Dim
231.4Dim
241.4Dim
251.4Dim
261.4Dim
271.4Dim
281.5Dim
291.5Dim
301.5Dim
311.5Dim
Planning a trip in December

Hazard calendar for Sinop

In seasonPeak

In December, Sinop sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Sinop's rainy season runs September–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Sinop?

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

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

December is a weaker month for outdoor sightseeing in Sinop.

What to pack for Sinop in December

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

In December, Sinop sees daytime highs around 11°C and nights near 7°C. Pack a warm layer and rain gear. About 14 days see rain.

a warm layerrain gear

Sea temperature near Sinop 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 offshore is warmest in August at about 25°C and coldest in February near 8°C.

It's comfortable for a long swim from Jun 17 to Oct 9 — about 3.8 months when the water holds above 20°C.

10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan9Bracing
Feb8Bracing
Mar8Bracing
Apr10Bracing
May14Bracing
Jun20Refreshing
Jul24Refreshing
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Sinop 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 Sinop peaks around June 23 at about 8 (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 highHighModerateLowJun 23UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr6High
May6High
Jun8Very high
Jul8Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Sinop?

Sinop sits at 42.0°N, 35.2°E, 100 m above sea level, in Turkey. The nearest listed city is Boyabat, 70 km away.

TaşköprüVezirköprüOsmancıkHavzaSamsunMerzifon

Topography around Sinop

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

Within 3 km, the terrain around Sinop has only modest variations in elevation — a maximum elevation change of 213 m around an average of 33 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 217 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,850 m.

The land around Sinop is covered by water (69%) within 3 km, water (79%) within 16 km, and water (49%) and trees (33%) within 80 km.

3 km
213 m
16 km
217 m
80 km
1,850 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Boyabat 70 km · Bafra 80 km · Taşköprü 97 km · Vezirköprü 101 km · Osmancık 120 km · Havza 125 km · Samsun 128 km · Merzifon 131 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 Sinop (42.0268°, 35.1625°, elevation 100 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).