# Travel >> Destinations >> South Pacific

Visiting Hawaii in September: Weather, Oceans, and Crowds

September in Hawaii: The Sweet Spot

September is widely considered one of the **best months to visit Hawaii**. It sits in the "shoulder season" between summer peak and winter surf season, offering a winning combination of warm weather, warm water, fewer crowds, and lower prices than June–July or December.

Weather

Temperatures: Daytime highs **84–88°F (29–31°C)**; overnight lows **72–76°F (22–24°C)**. Very consistent.
Rainfall: **Drier than winter.** Leeward (west/south) coasts: very little rain. Windward (north/east) coasts: passing trade showers, mostly overnight/early morning. Hurricane season peaks statistically, but direct hits are rare (last: Iniki 1992, Lane 2018 near-miss).
Humidity: Moderate to high, but trade winds (NE) provide cooling.

Ocean Conditions

Water Temp: **Peak warmth ~80–81°F (27°C).** Feels like bathwater. No wetsuit needed.
Visibility: Excellent (80–100+ ft) on leeward sides. Great for snorkeling/diving.
Surf: **South swells fading, North swells not yet arrived.** Generally smaller, beginner-friendly waves on all shores. Good for learning.
Trade Winds: Consistent NE 10–20 knots. Afternoon wind chop on windward coasts.

Crowds & Costs

Visitor Arrivals: ~700–800k (vs. 900k+ in July/Dec). **Noticeably quieter** beaches, roads, restaurants, attractions.
Lodging Rates: **15–30% lower** than summer/winter peak. Better availability.
Flights: More award seats, lower fares.

Events & Activities

Aloha Festivals: Statewide (September), celebrating Hawaiian culture (parades, hula, music, crafts).
Oktoberfest: Various locations (German heritage).
Hawaii Food & Wine Festival: Often starts late Aug/early Sept.
Outdoor: Hiking (cooler than summer), biking, kayaking, SUP, whale watching (humpbacks not yet arrived; false killer whales, pilot whales possible).

Island-Specific Notes

Big Island: Kona (dry, sunny), Hilo (wet). Volcanoes NP accessible.
Maui: Road to Hana (less traffic). West/South Maui dry.
Oahu: North Shore calm (swim/snorkel at Shark's Cove, Waimea Bay). Waikiki busy but manageable.
Kauai: Na Pali Coast boat tours (calm seas). South shore (Poipu) sunniest.