September typically marks the end of summer and the beginning of fall in Hawai’i. This transitional period often sees a decrease in rainfall compared to the summer months, though humidity levels generally remain high. Ocean temperatures are typically warm, making conditions favorable for swimming and other water activities. While large storms are less common than during the winter, the potential for tropical cyclones or their remnants to impact the islands still exists.
Understanding Hawai’i’s climate during this specific period is crucial for travelers planning vacations, businesses dependent on tourism, and residents preparing for potential weather-related changes. Historical weather data for September provides valuable insight into typical conditions, allowing for more informed decision-making regarding travel plans, outdoor activities, and resource management. Awareness of historical trends also contributes to a better understanding of the islands’ unique microclimates and the potential impacts of climate change.