September marks the transition from summer to fall in Maui, offering a unique blend of warm temperatures and lower humidity. Typically, daytime highs average in the mid-80s Fahrenheit (around 29-31 degrees Celsius), while nighttime lows dip to the low 70s Fahrenheit (around 21-23 degrees Celsius). Ocean temperatures remain pleasantly warm, ideal for swimming, snorkeling, and other water activities. Rainfall is generally lower in September compared to the wetter winter months. This period experiences the tail end of hurricane season, though the risk is considerably less than in August.
This time of year presents an advantageous climate for visitors. The slightly cooler temperatures offer a respite from the summer heat, making outdoor activities more comfortable. The reduced rainfall and lower humidity contribute to clearer skies, providing excellent conditions for stargazing and enjoying scenic views. Historically, September has been a less crowded time to visit Maui, allowing for a more relaxed experience compared to the peak summer months. This shoulder season often offers more competitive pricing on accommodations and flights.