Gemlik weather in December

In December, Gemlik sees average daytime highs of 10°C and overnight lows near 5°C, with 97 mm of precipitation across 12.4 wet days and about 9.2 hours of daylight. It is the 10th-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 23% 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 12 min by month's end. Set against the rest of the year, December is Gemlik's 12th-clearest and 4th-windiest month. For the whole year in context, see Gemlik's year-round climate.

Daytime high
10°
10th warmest
Overnight low
3rd coldest
Precipitation
97 mm
12.4 wet days
Daylight
9 h 06 min
7:26 AM – 4:33 PM
Cloud cover
67%
12th clearest
Wind
7 km/h
4th windiest
Solar energy
1.51 kWh/m²
Travel score
2.2
out of 10

Gemlik is district and town in Bursa Province, Turkey.

Density
189/km²
people per km²

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 9°C by the end.

A typical December day in Gemlik reaches about 10°C in the afternoon and slips back to 5°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 5°C and 15°C. Set against its neighbours, December runs about 5°C cooler than November and about 2°C warmer than January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1126
2126
3126
4126
5126
6116
7115
8115
9115
10115
11105
12105
13105
14105
15104
16104
17104
18104
19104
20104
2194
2294
2394
2494
2594
2694
2794
2894
2994
3094
3194

How December really feels in Gemlik

Once humidity and wind are folded in, December 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

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

Gemlik weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9012.74.79.41.5
Feb10° / 79124.310.42.0
Mar13° / 8612.12.211.73.2
Apr17° / 6510.20.3135.4
May22° / 13°538.2014.27.1
Jun26° / 17°497.8014.87.5
Jul29° / 19°264.6014.67.0
Aug29° / 20°284.2013.66.8
Sep25° / 17°546.8012.37.8
Oct20° / 13°779.2010.96.7
Nov15° / 759.60.89.84.6
Dec10° / 9712.43.29.22.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 65%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24060
34060
43961
53862
63862
73763
83664
93664
103664
113664
123565
133565
143565
153466
163466
173565
183565
193466
203466
213466
223466
233466
243268
253367
263367
273268
283268
293169
303070
313070

Chance of precipitation in December

Any precipitationSnow

Gemlik gets around 97 mm of rain and snow over 12.4 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 41% and peaks near 43% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1394
2394
3405
4405
5406
6407
7417
8418
9419
10419
114110
124111
134111
144212
154212
164212
174212
184112
194112
204112
214112
224112
234112
244113
254213
264213
274214
284314
294314
304315
314315

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 7 km/h in December.

Across December, daily wind ranges from about 7 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
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 18 min at the start of December to 9 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:13 AM to 7:32 AM, and sunset from 4:33 PM to 4:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:134:33
29.37:144:33
39.37:154:33
49.37:164:32
59.37:174:32
69.27:184:32
79.27:194:32
89.27:204:32
99.27:214:32
109.27:214:32
119.27:224:32
129.27:234:32
139.27:244:33
149.17:244:33
159.17:254:33
169.17:264:33
179.17:264:34
189.17:274:34
199.17:274:34
209.17:284:35
219.17:294:35
229.17:294:36
239.17:304:36
249.17:304:37
259.17:304:37
269.17:314:38
279.17:314:38
289.17:314:39
299.17:324:40
309.17:324:40
319.27:324:41

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.51 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.51 kWh/m² to a high of 6.81 kWh/m² in July across the year — December's 1.51 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.6Dim
31.6Dim
41.6Dim
51.6Dim
61.6Dim
71.6Dim
81.6Dim
91.5Dim
101.5Dim
111.5Dim
121.5Dim
131.5Dim
141.5Dim
151.5Dim
161.5Dim
171.5Dim
181.5Dim
191.5Dim
201.5Dim
211.5Dim
221.5Dim
231.5Dim
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 Gemlik?

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

2.2
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Gemlik.

What to pack for Gemlik in December

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

In December, Gemlik sees daytime highs around 10°C and nights near 5°C. Pack a warm layer. Worth having: rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Gemlik 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 22 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 Gemlik 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 Gemlik 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 Gemlik 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 Gemlik is worst in March — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 2317 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar18Moderate
Apr17Moderate
May17Moderate
Jun13Moderate
Jul11Good
Aug11Good
Sep10Good
Oct11Good
Nov12Good
Dec10Good
Location & terrain

Where is Gemlik?

Gemlik sits at 40.4°N, 29.2°E, 5 m above sea level, in Turkey. The nearest listed city is Orhangazi, 14 km away.

Topography around Gemlik

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

Within 3 km, the terrain around Gemlik has large variations in elevation — a maximum elevation change of 729 m around an average of 141 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,282 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,553 m.

The land around Gemlik is covered by trees (49%) and artificial surfaces (21%) within 3 km, trees (65%) within 16 km, and trees (47%) and water (27%) within 80 km.

3 km
729 m
16 km
1,282 m
80 km
2,553 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Orhangazi 14 km · Gürsu 24 km · Mudanya 24 km · Kestel 26 km · Yalova 27 km · Bursa 27 km · Nilüfer 32 km · Görükle 35 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 Gemlik (40.4309°, 29.1597°, elevation 5 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).