Season guide · Kauaʻi · United States
Kauaʻi in summer
June–August: weather, crowds, prices and the best things to do this time of year.
Updated By the AMZBooking editorial team
Pictured: Wailua Falls, Kauaʻi · Photo: No machine-readable author provided. Caracas1830 assumed (based on copyright claims)., CC BY-SA 2.5
Quick answer
Drier, warmest weather with calm seas, the best Nā Pali boat conditions and the busiest family season. Expect highs up to 30°C (86°F) and lows around 23°C (73°F), with about 42 rainy days across June–August. June is among the best months of the year to visit.
Key facts
- Months
- June–August
- Temperatures
- 23°C (73°F) to 30°C (86°F)
- Rainy days in the season
- About 42
- Sea
- 26°C (79°F) to 27°C (81°F)
- Crowds
- Busy
- Hotel prices
- High
Plan a trip to Kauaʻi
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Weather in summer
| Month | High | Low | Rainy days | Daylight | Crowds |
|---|---|---|---|---|---|
| June | 29°C (84°F) | 23°C (73°F) | 13 | 13.5 h | 3/5 |
| July | 29°C (84°F) | 23°C (73°F) | 15 | 13.4 h | 5/5 |
| August | 30°C (86°F) | 24°C (75°F) | 14 | 12.9 h | 4/5 |
Compared with the rest of the year: average highs of 29°C (84°F) against a yearly 28°C (82°F), and 42 of the year's roughly 169 rainy days fall in these 3 months. Crowds rate 4/5 and hotel prices 4/5 on average.
What's on in summer
Recurring events; dates move from year to year, so confirm with the organiser.
- July: Kōloa Plantation Days festival (usually late July)
Good choices for summer
Museum · Līhuʻe
Kauaʻi Museum
In a lava-stone building in Līhuʻe, this museum covers Kauaʻi's geology, Hawaiian culture, the ruling chiefs, the plantation era and the island of Niʻihau, with featherwork, koa calabashes and Niʻihau shell lei.
- Time needed
- 1–1.5 hours
- Cost
- Low cost
- History
- Rainy day
- Art
Day trips in summer
- Nā Pali boat tour from Port Allen (About 4–6 hours on the water) — Tours sail along the West Side past Polihale to the cliffs, sea caves and valleys of Nā Pali, often stopping to snorkel.
- Hanapēpē and the West Side (About 30 minutes from Poʻipū) — Explore Hanapēpē's galleries and swinging bridge, watch Salt Pond Beach's traditional salt-making pans, and visit Waimea's historic town centre and Russian Fort Elizabeth site.
What to pack
- Light, breathable clothes, a sun hat and high-factor sunscreen
- A compact umbrella and waterproof shoes — rain is frequent
- Comfortable walking shoes
Other times of year
Questions travellers ask
+Is summer a good time to visit Kauaʻi?
Yes: June is among the best months. Drier, warmest weather with calm seas, the best Nā Pali boat conditions and the busiest family season.
+What is the weather like in Kauaʻi in summer?
Highs of up to 30°C (86°F) and lows around 23°C (73°F), with about 42 rainy days over the season.