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What type of weather should I expect during my Kauai vacation?

Weather in Kauai is everything you imagined for a tropical paradise!  Temperatures are moderate year round, with a daily average of 78 degrees Fahrenheit. High temperatures average 77 degrees Fahrenheit in the winter and 85 degrees Fahrenheit in the summer.

The lowest temperatures in the winter range from 60-68 Degrees Fahrenheit. Temperature reaches its peak between 10 a.m. and 4 p.m. with low temperatures occurring between 10 p.m. and 4 a.m.

The water temperatures are also comfortable year round, ranging from 74 to 80 degrees Fahrenheit. Perfect for swimming and snorkeling! Our beautiful Garden Island flourishes with plenty of rain. Rain falls at some point nearly every day, keeping our tropical environment lush. The top of Mount Waialeale, located in central Kauai, is one of the wettest places on Earth with more than 400 inches of rainfall a year!

Although sunny days are the norm year-round, there is more chance of rain during the winter months, December to March, particularly on the northeast side of the island. But rain also means you'll see big, beautiful, gushing waterfalls. The most you'll need to stay warm is a light jacket.

Are there seasons in Kauai?

Native Hawaiians recognized two six-month seasons, with KAU occurring from May through October and HOO-ILO from November through April.

  • KAU was the fruitful season, the season when the sun was directly or almost directly overhead, the weather was warmer, and when the trade winds were most reliable and consistent.
  • HOO-ILO was the season when the sun was in the south, the weather was cooler, and the trade winds were most often interrupted by other winds.  Non-native Hawaiians recognize a winter season of seven months, occurring from October through April and a summer season of five months, from May through September.

Kauai temperatures stay the same as the seasons change, but the ocean conditions vary. During summer months, the North Shore has flat to small waves except for areas exposed to trade winds. Storms in the Southern Hemisphere create larger swells and waves on south-facing shores.

For less rainfall and calmer waves, summer is an excellent time to visit Hanalei Colony Resort. Eastern and Western Kauai have high surf conditions during the summer when trade winds and passing trade showers are typical weather.

During winter months, large, powerful swells hit the North and West-facing shores, bringing dangerous surfing conditions and longer spells of rain. The South shores usually have flat to small surf during winter and the Eastern shore conditions depend on the strength of the trade winds.  Overall, the North Shore is more tropical and lush, with more rainfall than the South and West Shores, which tend to be drier and sunnier.

What activities can I do while it’s raining in Kauai?

Don’t let the rain spoil your fun! If you’re staying at Hanalei Colony Resort, the charming town of Hanalei is just a short drive away, with some of the best shops and dining in Kauai! Great for browsing on a rainy day.  One thing about the waves and the weather in Kauai – if one area doesn’t suit your needs on any given day, the island is small and you can easily drive to another side of the island for a completely different experience. Any time of the year is a fantastic time to visit us at the Hanalei Colony Resort.