New Zealand finished its warmest June on record.Experts say they expect the warming trend to continue and predict the country will experience shorter winters in the future.The average temperature in June was 10.6 degrees Celsius, the National Institute of Water and Atmospheric Research, or NIWA, reported this week.That was 2 degrees Celsius above the 30-year average for June.It is also more than 0.3 degrees Celsius higher than previous records set in 2003 and 2014.Record-keeping began in 1909.Gregor Macara is a climate scientist at the government-run NIWA.He told The Associated Press that one reason for the record was an increase in winds coming from the warmer north, rather than the Antarctic south.In addition, ocean temperatures are unusually warm.Macara added that while the weather might change from month to month, "the underlying trend is of increasing temperatures and overall warming."