Koszalin weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Poor
Best time to visit: July – August
What is the weather like in Koszalin in April?
In April, Koszalin is cool: daytime highs average 12 °C, and nights cool down to about 4 °C. The sea averages 5.5 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 9 days, adding up to 37 mm. All in all, April is not an ideal month for a holiday in Koszalin.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 13 h 59 min05:56 – 19:55
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Warsaw
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %67 %
- Few rainy daysweight 20 %66 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in April
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Koszalin in April: quick answers
Is Koszalin hot in April?
No. In April, Koszalin is cool: daytime highs average 12 °C and nights drop to about 4 °C.
Can you swim in Koszalin in April?
Only if you don't mind cold water: in April the sea averages just 5.5 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Koszalin in April?
Rain falls on about 9 days, adding up to 37 mm.
Koszalin month by month
The whole year in KoszalinAll destinations: PolandWhere to go in AprilSea temperature in April
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences