December in Maui typically marks the beginning of the wetter season and the transition to winter. Average temperatures range from the low 70s to the low 80s Fahrenheit (low 20s to high 20s Celsius). Rainfall increases compared to the drier summer months, and while sunshine is still abundant, visitors should anticipate occasional showers, particularly in the mornings and evenings, and in higher elevations. Ocean conditions can become more unpredictable with larger swells, influencing swimming and water activities. This period also represents the start of the humpback whale watching season, as these majestic creatures migrate to Hawaiian waters to breed and calve.
Understanding Maui’s December climate is essential for planning a successful trip. Packing appropriately for both warm, sunny days and cooler, rainy periods ensures comfort and preparedness. Awareness of potential weather fluctuations allows for flexible itineraries, enabling travelers to adjust activities based on daily conditions. This knowledge also helps visitors choose appropriate accommodation and pack necessary gear for outdoor pursuits, whether hiking, swimming, or whale watching. The unique climatic conditions of December, while different from the summer months, offer distinct opportunities to experience the island’s diverse natural beauty.