Bilecik in Winter
In winter (December, January and February), Bilecik sees average daytime highs around 9°C and overnight lows near 1°C, with 172 mm of precipitation over about 31 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across winter, daytime highs hold fairly steady around 9°C. The sky is clear or mostly clear about 23% of the time across winter, and the air most often feels dry.
Winter is Bilecik's weakest season of the year to visit on our travel score. For the whole year in context, see Bilecik's year-round climate.
- Avg daytime high
- 9°C
- coldest season of the year
- Avg overnight low
- 1°C
- Precipitation
- 172 mm
- 31 wet days
- Avg wind
- 6 km/h
- Travel score
- 1.6
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Bilecik in Winter
Across winter, daytime highs hold fairly steady around 9°C.
A typical winter day in Bilecik reaches about 9°C and drops to 1°C overnight. The warmest of the three months is February, the coolest January.
How winter really feels in Bilecik
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 81 that feel at or below 0°C.
The story in winter is cold — wind chill drags the overnight "feels like" below the raw low.
Bilecik weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 7° / -0° | 58 | 10.3 | 5.4 | 9.5 | 1.0 |
| Feb | 9° / 1° | 53 | 10.2 | 4.6 | 10.4 | 1.9 |
| Mar | 13° / 3° | 64 | 11.2 | 2.9 | 11.7 | 3.4 |
| Apr | 18° / 6° | 56 | 10.5 | 0.6 | 13 | 5.7 |
| May | 23° / 11° | 49 | 9.4 | 0 | 14.2 | 7.1 |
| Jun | 27° / 15° | 38 | 7.7 | 0 | 14.8 | 7.1 |
| Jul | 30° / 17° | 15 | 3.8 | 0 | 14.6 | 6.3 |
| Aug | 30° / 18° | 13 | 3.2 | 0 | 13.6 | 6.1 |
| Sep | 27° / 14° | 24 | 5 | 0 | 12.3 | 7.7 |
| Oct | 21° / 10° | 44 | 7.1 | 0 | 10.9 | 7.1 |
| Nov | 15° / 5° | 44 | 7.8 | 1.1 | 9.8 | 4.7 |
| Dec | 9° / 1° | 62 | 10.3 | 3.8 | 9.2 | 1.8 |
Cloud cover in Winter
The sky is clear or mostly clear about 23% of the time across winter.
Chance of precipitation in Winter
Bilecik gets around 172 mm of rain and snow over 31 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 6 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 24 min in early December to 11 hours by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.1 kWh/m².
Is winter a good time to visit Bilecik?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Bilecik.
What to pack for Bilecik in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Bilecik sees daytime highs around 9°C and nights near 1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 31 days see rain.
UV index in Bilecik in Winter
Clear-sky midday UV across winter averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Bilecik peaks around August 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 3 | 7 | 7 | 9 | 9 | 9 | 7 | 4 | 3 | 2 |
| Level | Low | Moderate | Moderate | Very high | Very high | Very high | Very high | Very high | Very high | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 3 | Moderate |
| Apr | 7 | Very high |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 7 | Very high |
| Oct | 4 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Bilecik in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Bilecik is worst in March — around 24 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 13 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Bilecik's WHO annual average of 17.5 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 14 | 17 | 24 | 24 | 24 | 19 | 15 | 16 | 15 | 15 | 15 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 17 | Moderate |
| Mar | 24 | Moderate |
| Apr | 24 | Moderate |
| May | 24 | Moderate |
| Jun | 19 | Moderate |
| Jul | 15 | Moderate |
| Aug | 16 | Moderate |
| Sep | 15 | Moderate |
| Oct | 15 | Moderate |
| Nov | 15 | Moderate |
| Dec | 13 | Moderate |
Where is Bilecik?
Bilecik sits at 40.1°N, 30.0°E, 517 m above sea level, in Turkey. The nearest listed city is Osmaneli, 24 km away.
Topography around Bilecik
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bilecik.
Within 3 km, the terrain around Bilecik has significant variations in elevation — a maximum elevation change of 481 m around an average of 500 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,136 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,526 m.
The land around Bilecik is covered by trees (34%) and grassland (32%) within 3 km, trees (55%) and grassland (22%) within 16 km, and trees (54%) and grassland (21%) within 80 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
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 Bilecik (40.1419°, 29.9793°, elevation 517 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.