What do you think is it enough to survive a month?
It's definitely enough, especially if you want to share an apartment. To realize what this money are worth in GdaĆsk look here:
numbeo.com/cost-of-living/compare_cities.jsp?country1=Hungary&city1=Budapest&country2=Poland&city2=Gdansk&displayCurrency=EUR
As JollyRomek wrote it's OK salary for Hungarian speaker, as it's not the best payed language in Polish BPOs.