You might do better for replies in the cruise forum but the weather in Poland {North West sits on Baltic} in September can be really nice. BBC Weather in association with MeteoGroup. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique. US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Northern Indiana 7506 E 850 N Syracuse, IN 46567 574-834-1104 Expect sunny skies in June and July, but prepare for rain. In May, the average sea temperature in Gdańsk, Poland, is 10.2°C (50.4°F).Swimming in 10.2°C (50.4°F) is considered life-threatening. You'll find big crowds, especially over holidays and at weekends. Current weather in Gdańsk and forecast for today, tomorrow, and next 14 days May experiences the typical spring weather as opposed to the other spring months. All times are CET (Europe/Warsaw, GMT +0100) unless otherwise stated. Climate and Average Weather in Poland. New lifts Northern Poland. The average monthly temperature in July is 19 degrees Celsius (66° Fahrenheit), but sometimes in the summer the temperatures rises to … Ski weather Northern Poland. Due to significant differences that occur from day to day and more increasingly from year to year, it is extremely difficult to predict what the weather is going to be like at any given point in time. With eight hours or warm sun, the rains make an insignificant difference in the climate. Not necessarily "sunbathing" weather but pleasant. Not necessarily "sunbathing" weather but pleasant. Museums, national parks and other attractions are open for business. May weather forecast for Warsaw, Poland. 2015 was the warmest year since records began in 1880. [1781841] Weather info: Ski weather; Webcams; Live streams; Select another region. You might do better for replies in the cruise forum but the weather in Poland {North West sits on Baltic} in September can be really nice. Our weather is changing. Be prepared with the most accurate 10-day forecast for Warsaw, Masovian Voivodeship, Poland with highs, lows, chance of precipitation from The Weather Channel and Weather.com US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Indianapolis, IN 6900 West Hanna Avenue Indianapolis, IN 46241-9526 Shoulder (Mar, Apr & Oct) Some attractions may be closed or have shorter hours. First of all, you have to be aware of the fact that the weather in Poland is very instable. Change region. The climate of Poland is maritime and sometimes continental determined by the geographical location. Find out what the weather outside was like the day you were born - enter your birthday to get started: born on Weather Atlas: Warsaw, Poland - May weather forecast and climate information. 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