December - May
Kauai vacationers come to escape winter or embrace spring. You will find sun on Kauai in winter, but keep in mind this is when there is the most dangerous surf on the North and East shores of the island. Christmas brings a parade to Rice Street, the main street of Lihu’e, with some of the island’s best craft vendors and palm trees alight rivaling the Christmas-ness of any pine trees in the nation, even without snow.
June - November
Hurricane season (June to November) is when rates are generally lower. Though it’s been nearly 20 years since the last hurricane, Hurricane, Iniki, these months tend to be more rainy and erratic, weather-wise. Off-season used to mean a lull in visitors, but bargain hunters keep things busy during this time. Summer months are cooler in temperature than many mainland cities, and the ocean on the North and East shores become placid and alluring. The trade winds aren’t as prominent but still the air stays cool, with the exception of August. Visiting during summer has its benefits, as it’s when all sides of the island are likely to be sunny, and hiking trails are caked with dirt rather than several feet of slick mud, and longer days mean that much more time to enjoy a sunset cocktail.
September - December; January - March
The shoulder season is a great time to take a Kauai vacation if you want to avoid paying top dollar. The beginning of the year tends to see lower visitor arrivals that climb slowly into the spring. With the temperate climate, this late winter/ early spring season is as good a time as any to visit: The ocean is just as blue, the sand just as white. A hidden bonus? More rain means the waterfalls and corresponding pools to swim in are more spectacular and less crowded. However, it is worth saying again: winter months mean dangerous and deadly surf and riptides on North and East shores, so consider the South Shore or Westside during that time.