Month guide · Kauaʻi · United States
Kauaʻi in August
What August is really like in Kauaʻi: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Pictured: Hanalei Bay, Kauaʻi · Photo: Jawed Karim, CC BY-SA 3.0
Quick answer
August is a shoulder-season month. Expect average highs of 30°C (86°F), lows of 24°C (75°F), about 14 rainy days and roughly 12.9 hours of daylight. The warmest month and the peak of hurricane season, though direct impacts are rare.
Key facts
- Average high / low
- 30°C (86°F) / 24°C (75°F)
- Rainy days
- About 14
- Daylight
- About 12.9 hours
- Sea temperature
- 27°C (81°F)
- Crowds
- Busy
- Hotel prices
- High
Plan a trip to Kauaʻi
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Weather in August
August is the warmest month in Kauaʻi: days average 30°C (86°F) against a yearly average high of 28°C (82°F), and nights fall to about 24°C (75°F). Rain falls on roughly 14 of its 31 days. Compared with July (29°C (84°F)), August is about as warm; by September highs stay near 30°C (86°F).
- Sunrise (15 August)
- About 06:16
- Sunset (15 August)
- About 19:10
- Daylight
- About 12.9 hours
- Sea
- 27°C (81°F)
Spring (March–May). Rain eases through the season, waterfalls flow strongly and crowds thin after spring break.
Crowds and prices
On a 1–5 scale, August rates 4 for crowds (the peak is July at 5) and 4 for hotel prices (highest in January). Book accommodation early: August is one of the pricier months.
Events in August
August has no major recurring festival in Kauaʻi, which usually means easier bookings.
What to do in August
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Nature · North and West Shores
Nā Pali Coast
Roughly 27 km of fluted green cliffs, hanging valleys, sea caves and waterfalls run along the island's north-west shore with no road access.
- Time needed
- Half a day
- Cost
- Expensive
- Iconic
- Nature
- Views
- Photo spot
Viewpoint · Waimea and Hanapēpē
Waimea Canyon State Park
Go in the morning before clouds fill the canyon, and stop at the main Waimea Canyon Lookout and Puʻu Hinahina Lookout on the way up.
- Time needed
- Half a day
- Cost
- Low cost
- Iconic
- Views
- Nature
- Photo spot
Nature · Hanalei
Hāʻena State Park and Kēʻē Beach
The end of the road on the North Shore, with Kēʻē Beach's reef-protected lagoon and the trailhead of the Kalalau Trail.
- Time needed
- Half a day
- Cost
- Low cost
- Iconic
- Active
- Nature
- Outdoors
Beach · Hanalei
Hanalei Bay
Swim in summer near the pier, and in winter watch the surf from the sand; the shorebreak and currents can be dangerous.
- Time needed
- Half a day
- Cost
- Free
- Free
- Iconic
- Kids
- Couples
- Photo spot
The sea averages 27°C (81°F) — warm enough to swim. Best beaches near Kauaʻi.
What to pack
For highs near 30°C (86°F), lows near 24°C (75°F) and 14 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; a compact umbrella and waterproof shoes — rain is frequent; comfortable walking shoes.
Is August a good time to visit Kauaʻi?
A shoulder-season month. If your dates are flexible, April–June and September–October are better overall. Compare every month.
Kauaʻi in other months
Questions travellers ask
+What time does the sun set in Kauaʻi in August?
At about 19:10 local time in mid-August, with sunrise at about 06:16: roughly 12.9 hours of daylight.
+How warm is Kauaʻi in August?
Average highs are around 30°C (86°F) and lows around 24°C (75°F).
+Does it rain a lot in Kauaʻi in August?
Expect rain on about 14 days of the month, so pack for wet weather.