The climatic conditions observed in Poland are the result of the influences of the oceanic currents from west, the polar currents from Scandinavia and Russia and the more subtropical currents coming from the south. The climate is moderate, i.e. it is characterized by the seasons and in particular by cold winters and hot summers. However, the climate can significantly vary from year to other. In addition, it is maritime on the Balte littoral and depends especially on altitude in the mountainous areas of the south.

The end of the summer and the autumn are marked by pleasant temperatures, thanks to the influence of the dry and subtropical continental masses of air. Nature changes during "the gilded Polish autumn" (Zlota Polska Jesien). Springs can be dramatic because of the floods, supplied by the melt snow . The winters are generally rigorous and dry, because of the polar and continental fronts.

The national average temperatures are of -3°C the winter and 18°C the summer. More are reached in January with on average from -1 C° in north to -8 C° in south-east. In July the average temperatures varying from 18 C° on the littoral to 22 C° in the south.

Precipitations spread out of less than 500 mm certain years in the plains up to 1.270 mm in the mountains in the south. The Baltic coast is sunniest in summer, while the Carpathes mountains in winter.

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