Welcome to IWSA (International Winter Swimming Association) which is the pre-eminent global organisation dedicated to developing safe, cold water swimming events. We have many years of experience as our history stems from Finland, where cold water swimming is a great tradition just like sauna. All our competitions have standard events, so whether it is a quick 25m swim or a longer swim of 450m, all are welcome. We have developed a comprehensive calendar of events which always culminates in the biannual world championships.