Koszalin in Winter
In winter (December, January and February), Koszalin sees average daytime highs around 3°C and overnight lows near -1°C, with 156 mm of precipitation over about 34 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Across winter, daytime highs hold fairly steady around 3°C. The sky is clear or mostly clear about 11% of the time across winter, and the air most often feels dry.
Winter is Koszalin's weakest season of the year to visit on our travel score. For the whole year in context, see Koszalin's year-round climate.
- Avg daytime high
- 3°C
- coldest season of the year
- Avg overnight low
- -1°C
- Precipitation
- 156 mm
- 34 wet days
- Avg wind
- 19 km/h
- Travel score
- 0.0
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Koszalin in Winter
Across winter, daytime highs hold fairly steady around 3°C.
A typical winter day in Koszalin reaches about 3°C and drops to -1°C overnight. The warmest of the three months is December, the coolest January.
How winter really feels in Koszalin
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 90 that feel at or below 0°C.
The story in winter is cold — wind chill drags the overnight "feels like" below the raw low.
Koszalin 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 | 2° / -1° | 54 | 11.7 | 4.5 | 7.7 | 0.0 |
| Feb | 3° / -1° | 44 | 10.2 | 4.5 | 9.3 | 0.0 |
| Mar | 6° / 0° | 49 | 10.3 | 3 | 11.5 | 0.6 |
| Apr | 11° / 4° | 38 | 9 | 0.5 | 13.7 | 3.0 |
| May | 16° / 8° | 56 | 10.8 | 0.1 | 15.7 | 5.0 |
| Jun | 19° / 12° | 71 | 12 | 0 | 16.8 | 5.8 |
| Jul | 21° / 14° | 90 | 13.3 | 0 | 16.4 | 6.1 |
| Aug | 22° / 14° | 78 | 13.4 | 0 | 14.6 | 6.1 |
| Sep | 18° / 11° | 68 | 12.2 | 0 | 12.5 | 5.2 |
| Oct | 12° / 7° | 66 | 12.5 | 0.1 | 10.2 | 3.1 |
| Nov | 7° / 3° | 53 | 11.8 | 1.3 | 8.2 | 0.8 |
| Dec | 4° / 0° | 58 | 12.4 | 4 | 7.2 | 0.0 |
Cloud cover in Winter
The sky is clear or mostly clear about 11% of the time across winter.
Chance of precipitation in Winter
Koszalin gets around 156 mm of rain and snow over 34 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 19 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 7 h 30 min in early December to 10 h 18 min 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 0.8 kWh/m².
Is winter a good time to visit Koszalin?
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 Koszalin.
What to pack for Koszalin in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Koszalin sees daytime highs around 3°C and nights near -1°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 34 days see rain.
Sea temperature near Koszalin in Winter
The nearest coast averages about 5°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 20 km away) is warmest in August at about 19°C and coldest in February near 3°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 4 | 3 | 3 | 5 | 9 | 14 | 17 | 19 | 16 | 13 | 9 | 6 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 4 | Bracing |
| Feb | 3 | Bracing |
| Mar | 3 | Bracing |
| Apr | 5 | Bracing |
| May | 9 | Bracing |
| Jun | 14 | Bracing |
| Jul | 17 | Cool |
| Aug | 19 | Cool |
| Sep | 16 | Cool |
| Oct | 13 | Bracing |
| Nov | 9 | Bracing |
| Dec | 6 | Bracing |
UV index in Koszalin in Winter
Clear-sky midday UV across winter averages around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Koszalin peaks around June 17 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 at about 0 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 4 | 5 | 6 | 5 | 5 | 4 | 2 | 1 | 0 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 4 | Moderate |
| May | 5 | High |
| Jun | 6 | High |
| Jul | 5 | High |
| Aug | 5 | High |
| Sep | 4 | Moderate |
| Oct | 2 | Low |
| Nov | 1 | Low |
| Dec | 0 | Low |
Air quality in Koszalin 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 Koszalin is worst in April — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 8 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Koszalin's WHO annual average of 13.7 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 13 | 17 | 18 | 16 | 16 | 16 | 15 | 14 | 11 | 9 | 8 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 13 | Moderate |
| Mar | 17 | Moderate |
| Apr | 18 | Moderate |
| May | 16 | Moderate |
| Jun | 16 | Moderate |
| Jul | 16 | Moderate |
| Aug | 15 | Moderate |
| Sep | 14 | Moderate |
| Oct | 11 | Good |
| Nov | 9 | Good |
| Dec | 8 | Good |
Where is Koszalin?
Koszalin sits at 54.2°N, 16.2°E, 30 m above sea level, in Poland. The nearest listed city is Białogard, 24 km away.
Topography around Koszalin
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Koszalin.
Within 3 km, the terrain around Koszalin has only modest variations in elevation — a maximum elevation change of 106 m around an average of 39 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 153 m; within 80 km, significant variations in elevation — a maximum elevation change of 264 m.
The land around Koszalin is covered by artificial surfaces (38%) and trees (35%) within 3 km, trees (38%), cropland (23%) and grassland (20%) within 16 km, and trees (38%), water (27%) and cropland (22%) within 80 km.
Poland travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 52% of US
- price level, 2025
- GDP per capita
- $28,420
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 0.8
- per 100k, 2023
- Road deaths
- 9.4
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 600
- 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 Koszalin (54.1944°, 16.1722°, elevation 30 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.