September is one of the best months to visit Kauai. The summer crowds clear out after Labor Day, hotel rates drop from their peak, and the island settles into a quieter, more unhurried version of itself. The weather stays warm, the ocean holds its summer calm, and the land, particularly on the North Shore, is at its most abundant.
If you are looking for a Kauai trip that feels like it belongs to you, September gives you that.
September on Kauai: Quick Reference
What to Know | |
Weather | Low 80s°F, trade winds in the evenings, brief afternoon showers on the North Shore |
Ocean | Calm and warm, ~78–80°F; good conditions for swimming, snorkeling, and boat tours |
Crowds | Light: one of the quietest months of the year |
Prices | Shoulder season rates for accommodations and activities |
Cultural highlight | Kauaʻi Mokihana Festival, last full week of September |
North Shore anchor | Common Ground Kauai; Cocktail & Dinner Experience; Mornings in the Lei Garden |
Best for | Families, food travelers, cultural explorers, hikers, anyone who prefers the island without the crowd |
Why September Is One of Kauai’s Best-Kept Secrets
Most people think of summer as the season to visit Kauai. Ask the locals, and September is the month that comes up.
After Labor Day, the summer travelers clear out. In practical terms, that means:
- Beaches that were packed in July, with room to spread out again
- Restaurants with walk-in availability most nights
- Trailhead parking that actually exists
- More last-minute access to tours and boat trips
- Hotel and activity rates below summer peak
That timing also works in your favor on the water and on the trails. The Na Pali Coast boat tour season is still running, with the calm ocean conditions of late summer before winter swells take over. Waimea Canyon‘s trails are drier and more forgiving now than they’ll be once the winter rains settle in.
And the cultural calendar deepens. Late September brings the Kauaʻi Mokihana Festival, the island’s most significant celebration of Hawaiian music, hula, and language.
What’s the Weather Like in Kauai in September?
September on Kauai is warm, largely dry, and comfortable. Temperatures generally stay between 76°F and 84°F. The ocean sits around 78–80°F. Rain patterns differ significantly by shore.
North Shore (Kīlauea / Hanalei) | South Shore (Poʻipū) | |
Avg. High | ~81–82°F | ~83–84°F |
Rainfall | Brief afternoon showers; evenings typically clear | Very little; consistently sunny |
Ocean | Calm, late-summer conditions | Calm; excellent for swimming and snorkeling |
Trade Winds | Consistent and refreshing | Warm and steady |
Best for | Farm experiences, hiking, cultural events, lush scenery | Beaches, snorkeling, water sports, sunsets |
A note on North Shore rain: a quick afternoon shower over the Nāmolokama Mountains is one of the more beautiful things Kauai does in September. It passes fast. The light after it is worth staying for.
What’s Actually Growing on Kauai in September
This is the part most travel guides skip entirely.
September is late summer on the farm. The heat has been building for months, and the land is full. On the North Shore, where the soil runs deep and the rainfall keeps everything green, the food forest at Common Ground is producing some of the most abundant harvests of the year.
Did You Know? Hawaiʻi currently imports approximately 85–90% of its food. A working regenerative farm in Kīlauea is a real-time demonstration of what the island is capable of growing on its own.
Walk the food forest in September and you will pass:
- Papaya: ripening on tall stalks, flesh deepening to orange
- Breadfruit (ʻulu): starchy and generous, deeply rooted in Hawaiian food traditions and at peak season in late summer
- Avocado: heavy on the branches, late-summer varieties
- Apple banana: smaller and sweeter than anything in a grocery store
- Taro: growing in the wetter, shadier sections of the farm
- Mamaki: a native Hawaiian herb harvested and brewed as tea
- Ginger blossom: fragrant in the morning, used fresh in the kitchen
- Heart of palm, kava, tree tomato, pineapple: plants drawn from across the Pacific and beyond, now producing together in a single interconnected ecosystem
The September table at Common Ground Kauai reflects all of it. The menu changes with what is growing; that is the point. While we won’t have your exact menu until the ingredients for your meal are harvested, some of the delicious dishes you can expect are roasted purple sweet potato, taro and breadfruit, farm-style salads, locally ranched meats, mamaki, and ginger blossom tea. Every ingredient on the table, including the cooking oil and seasonings, comes from Kauai.
Things to Do on Kauai’s North Shore in September
The North Shore is its own September destination. Most travel guides default to Poʻipū and the south shore, but Kīlauea and the coast above it offer a slower, more grounded version of Kauai that the shoulder season suits particularly well.
1. Walk a Regenerative Farm and Eat What Grows There
The Cocktail & Dinner Experience at Common Ground Kauai is the North Shore’s best evening in September.
The farm sits on land that was once part of Kīlauea’s sugar and guava plantation era. Today it is home to a regenerative food forest, a working farm, and a community gathering space. \
The evening moves from the land to the table:
- A guided walk through the regenerative food forest, led by Common Ground Kauai’s farm education team
- Fresh fruit tasting pulled directly from the trees: pineapple, tree tomato, papaya, and more
- A family-style dinner made entirely from Kauai-grown ingredients, served open-air as the trade winds come through
- Cocktails, wine, and local beer available for purchase
The experience has been featured in Cosmopolitan, Forbes, AFAR, and Hawaiʻi Magazine. All ages are welcome.
2. Mornings in the Lei Garden
Common Ground Kauai also offers Mornings in the Lei Garden, a hands-on lei-making workshop led by our knowledgeable, friendly local guides.
This isn’t an average, introductory lei tutorial you’d find at a resort. This is a deeper dive into the cultural tradition of lei and more advanced technique. You’ll create your own lei poʻo (crown).
Each workshop includes:
- An introduction to the native and culturally significant plants in Common Ground’s lei gardens
- Hands-on lei-making instruction guided by a deep knowledge of Hawaiian tradition
- Stories and cultural context passed down through generations of practice
- A lei poʻo you made yourself to take home
September mornings on the North Shore are cool and quiet. The garden is at its best. It is a gentle way to spend a few hours close to the land and close to a tradition that Kauai has carried for generations.
3. Visit Kīlauea Point Lighthouse
A short drive from Common Ground, Kīlauea Point is one of the most dramatic natural lookouts on any Hawaiian island. The lighthouse sits at the tip of the point with a clear view down the coastline in both directions. Nene, Hawaiʻi’s state bird, often feed in the grass nearby. Red-footed boobies nest in the cliffs below. September afternoon light here is golden and long.
4. Shop the North Shore Farmers Markets
Two markets are an easy drive from Common Ground Kauai and are worth building into a North Shore morning.
Anaina Hou / Namahana Farmers Market (Saturdays, Kīlauea) and the county-run Kilauea Sunshine Market (Thursdays) both reflect the full generosity of September on the North Shore. Look for:
- Fresh papaya, rambutan, and dragon fruit
- Sugarloaf pineapple
- Local honey and tropical flowers
- Produce from small family farms along the coast
Pro Tip: At the county Sunshine Markets, vendors cannot sell until the opening whistle sounds. Arrive a few minutes early and get in position, the freshest items often sell out fast.
5. Morning at Hanalei Bay
Get there before 9 am. September mornings at Hanalei Bay are warm, uncrowded, and still. The mountains behind the bay hold mist in their upper folds. The water is calm and green. There is nothing to do but swim, sit on the sand, and let the place work on you.
The bay is about twenty-five from Common Ground Kauai. A morning here pairs naturally with an afternoon in Kīlauea and an evening on the farm.
6. Celebrate Hawaiian Culture: The Kauaʻi Mokihana Festival
The Kauaʻi Mokihana Festival is a week-long celebration of Hawaiian culture held annually during the last full week of September, organized by the Mālie Foundation. It is the island’s cultural centerpiece for the fall season.
The festival includes:
- A Hawaiian-language composers contest and concert
- Hula workshops open to the public
- Cultural lectures on Hawaiian history and tradition
- A free juried craft fair (Thursday through Saturday)
- Two nights of hula kahiko and ʻauana competition, drawing halau from Kauai and across the islands
The mission of the Mokihana Festival: to preserve, perpetuate, and promote Hawaiian culture, reflects the same values at work at Common Ground Kauai. If you are in Kauai during festival week, the hula competition is worth attending with that understanding. This is living tradition, not a performance. It carries meaning specific to this island and its people.
More Worth Doing in September
September is a strong month across the whole island. A few highlights beyond the North Shore:
1. Na Pali Coast boat tours are still running through most of September, before fall swells close the season. Tips for making the most of it:
- Book morning departures from Port Allen or Hanalei for the calmest water and best visibility
- Confirm availability before your trip; season-end dates vary by operator and year
2. Waimea Canyon State Park is excellent in September, with drier trails and the canyon at its full summer green. A few things to know before you go:
- The drive to Puʻu O Kila Lookout is 19 miles from Waimea town, allow at least half a day
- Go in the morning; afternoon clouds can settle into the canyon and close in the views
3. Hanapēpē Art Night happens every Friday evening. The historic west-side town opens its galleries, lines the main street with local artists, food trucks, and live music, and charges nothing to walk. It has been running since 1997.
4. Kauai Sunshine Markets run most weekdays in a rotating location around the island. A few things to keep in mind:
- These are county-run, produce-only markets; vendors are farmers, not crafters
- Prices are low and selection is harvested the same morning
- Arrive right at opening; the best produce goes fast
September is generous that way. There is enough on the whole island to fill a week without repeating yourself, and enough quiet to actually enjoy each thing.
Come Experience September With Us
September is the month we love sharing most at Common Ground Kauai.
The food forest is heavy with papaya and breadfruit. The lei gardens are full. Evening dinners happen under an open sky, trade winds coming through as the food arrives: roasted purple sweet potato, fresh greens, locally ranched meat, ginger blossom tea made from what grows steps from the kitchen.
September here also looks like a morning in the lei garden with Elvrine, a walk to the Stone Dam as the light drops, a cold local beer on the lanai while the sky changes color.
Come join us. Reserve your spot at Common Ground Kauai today!
FAQs
Is September a good time to visit Kauai? Yes. September is one of Kauai’s best months. Summer crowds thin out after Labor Day, hotel rates drop from peak, and the weather stays warm: low 80s, calm ocean, steady trade winds. The Kauaʻi Mokihana Festival in late September adds a cultural dimension the busier months rarely match.
What’s the weather like in Kauai in September? September temperatures range from the mid-70s to the low 80s°F. The south shore stays dry and consistently sunny. The North Shore sees brief afternoon showers that clear quickly. Ocean temperatures hover around 78–80°F, warm enough to swim comfortably without a second thought.
What is the Kauaʻi Mokihana Festival? The Kauaʻi Mokihana Festival is a week-long celebration of Hawaiian culture held annually in late September, organized by the Mālie Foundation. It includes a Hawaiian-language composers contest, hula workshops, cultural lectures, a free craft fair, and two nights of hula competition. Most events are in Lihue and Kapaʻa.
Is the Common Ground Kauai farm dinner experience good for families? Yes! The guided food forest walk, fresh fruit tasting, and family-style dinner work well for curious kids and adults alike. You can make your reservation for the Farm and Food Experience on weekday evenings on the North Shore in Kīlauea.