Kauaʻi in August
August is a good month for Kauaʻi: a typical day grades A-, the 6th best of the 12 months. Expect highs near 86°F, water around 81°F and about a 22% chance of rain on a given day. Beaches are typically very busy (Mexico summer vacation and US summer school break).
Kauaʻi month by month
Typical grade and high for each month. Higher is better: A+ to F.
- JanA-78°F
- FebA-78°F
- MarA-79°F
- AprA-80°F
- MayA82°F
- JunA84°F
- JulA-85°F
- AugA-86°F
- SepA86°F
- OctA84°F
- NovA82°F
- DecA-79°F
July: A- · August: A- · September: A. The best months are usually June, September and October, and the weakest are February and March.
Best beaches in Kauaʻi in August
Resorts with the best typical August, and their grades for the next few days.
| Beach | Typical Aug | This week |
|---|---|---|
| OUTRIGGER Kauaʻi Beach Resort & Spa | A | SatB+SunA-MonA-TueB+WedA- |
| The Royal Sonesta Kaua'i Resort Lihue | A | SatB+SunA-MonA-TueB+WedA- |
| Banyan Harbor Resort | A | SatA-SunBMonB+TueB-WedB+ |
| Kauai Inn | A | SatA-SunBMonB+TueB-WedB+ |
| Koloa Landing Resort at Poipu | A | SatA-SunBMonB+TueBWedB |
| Marriott’s Waiohai Beach Club | A | SatA-SunBMonB+TueBWedB |
| Sheraton Kauai Coconut Beach Resort | A | SatB+SunA-MonA-TueB+WedA- |
| Plantation Hale Suites | A | SatB+SunA-MonA-TueB+WedA- |
Grades for the next few days from Veabird's beach forecast, updated Oct 3, 18:00 UTC. Higher is better: A+ to F.
How it compares
Kauaʻi is among the best-graded beach destinations in August. Every destination in August.
Questions
- Is August a good time to visit Kauaʻi?
- August is a good month for Kauaʻi: a typical day grades A-, the 6th best of the 12 months. Expect highs near 86°F, water around 81°F and about a 22% chance of rain on a given day. Beaches are typically very busy (Mexico summer vacation and US summer school break).
- How warm is Kauaʻi in August?
- Typical highs are about 86°F and the sea is about 81°F. That is warm enough for long swims without a wetsuit.
- Is August hurricane season in Kauaʻi?
- August falls in the tropical storm season; the typical risk on a given day is low. It peaks in September. Travel insurance and flexible bookings help.
- How crowded is Kauaʻi in August?
- Typically very busy, around Mexico summer vacation and US summer school break. The quietest months are usually September and October.
Plan it
Typical-month numbers from Veabird's year-ahead outlook for the 20 resorts here (median resort): 6 years of ERA5 climate normals, the seasonal pattern of the Atlantic sargassum belt, holiday crowd calendars and historical storm tracks. Any given year can differ; check the 16-day forecast before you go.