Koszalin weather in June
Temperature, sea and sunshine in June: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in June
Poor
Best time to visit: July – August
What is the weather like in Koszalin in June?
In June, Koszalin is mild: daytime highs average 20 °C, and nights cool down to about 12 °C. The sea averages 14.1 °C – swimming is only for the hardy. The sun shines for around 9 hours a day. Rain is frequent, with about 12 rainy days and 66 mm in total. All in all, June is not an ideal month for a holiday in Koszalin.
June compared
How the weather changes from May to July. Tap a month to open it.
More details for June
- Daylight
- 17 h 9 min04:21 – 21:30
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 57 %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 %12 %
- Seaweight 25 %0 %
- Sunshineweight 20 %93 %
- Few rainy daysweight 20 %44 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in June
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Koszalin in June: quick answers
Is Koszalin hot in June?
No. In June, Koszalin is mild: daytime highs average 20 °C and nights drop to about 12 °C.
Can you swim in Koszalin in June?
Only if you don't mind cold water: in June the sea averages just 14.1 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Koszalin in June?
Rain is frequent, with about 12 rainy days and 66 mm in total.
Koszalin month by month
The whole year in KoszalinAll destinations: PolandWhere to go in JuneSea temperature in June
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