Auckland's weather can be unpredictable and there's a song by New Zealand band Crowded House that sums it up—Four Seasons in One Day. But don't let that put you off; there is always something to do whatever the weather. As a rule of thumb, the warmest months are December through April and a sun hat is a good idea. Winter kicks in about July running through October. It can be humid in summer and quite chilly in winter. It often rains, so be prepared.