Best time to visit Kauai

• “April–June: shoulder season, best overall” hikauai.com
• “May is actually one of the best times to visit Kauai!” thehawaiivacationguide.com
• “Spring is a great balance of good weather and relaxed energy.” beachkauai.com

5 of the 7 travel guides we read name these months.

1. January79°F / 66°F · 12 rainy daysChecking fares…January and February are peak humpback whale months.Expect more rain from December through March.Na Pali boat tours are generally unavailable from November through March because of rough swells.
2. February78°F / 66°F · 13 rainy daysChecking fares…Kauai Kanikapila, a Hawaiian music series, runs eight weeks across February and March.Humpback whales are at their peak in winter.Presidents' Day brings a price spike.
3. March79°F / 67°F · 15 rainy daysChecking fares…The heaviest downpours come in December and March.Na Pali boat tours are generally unavailable from November through March because of rough swells.Whale watching continues through April.
4. Best timeApril80°F / 70°F · 16 rainy daysChecking fares…The ocean begins to calm and crowds thin after the winter holidays.Easter week brings a brief spike.April to June is called the single best window for a first trip.
5. Best timeMay82°F / 71°F · 14 rainy daysChecking fares…May is called one of the best times to visit, with the winter crowd gone and spring break over.The north shore is swimmable again by early May.May Day and Lei Day celebrations take place in spring.
6. Best timeJune83°F / 73°F · 18 rainy daysChecking fares…June is one of the driest months, with calm north shore water.June is the second most crowded month, just behind July.Late June starts the calm-water summer season on the North Shore.
7. July85°F / 75°F · 19 rainy daysChecking fares…July to August is peak season with reliable weather and the warmest ocean.Popular spots like Tunnels, Ke'e and Polihale fill before 9 a.m.Ha'ena State Park reservations sell out about 30 days ahead.
8. August85°F / 75°F · 18 rainy daysChecking fares…Summer has the calmest ocean on the North Shore, good for snorkeling and paddleboarding.Summer is the busiest season because school is out.Average summer highs are about 83 F.
9. Best timeSeptember85°F / 75°F · 16 rainy daysChecking fares…Crowds drop once mainland schools restart.The ocean is at its calmest, good for north shore snorkeling.September to November is cheaper and less crowded than May.
10. October84°F / 74°F · 17 rainy daysChecking fares…The Kauai Chocolate and Coffee Festival is held in October.Trade winds shift in late October and rain returns to the north shore around the 20th.Fall on the North Shore often has dry, cloudless skies and fewer crowds.
11. November81°F / 71°F · 18 rainy daysChecking fares…The south shore stays excellent into November.Winter swells arrive and Na Pali boat tours stop around November.November is part of the fall season with fewer visitors after summer.
12. December79°F / 69°F · 18 rainy daysChecking fares…Peak whale-watching season starts in December.Expect more rain from December through March.The Christmas to New Year stretch is a price and crowd spike.

Weather: Lihue averages (1991 to 2020 averages), as listed in its climate table on Wikipedia.

What is the wettest month on Kauai?

One source says the heaviest downpours come in December and March, with October through March the wet stretch.

What is the cheapest time to go to Kauai?

One source says September through November (before Thanksgiving) is cheaper and less crowded than May.

• Best Beaches in Kauai18 places
• Best Places to Visit in Kauai13 places

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