May typically marks the transition from Hawaii’s wetter season to its drier summer months. Visitors can expect daytime temperatures ranging from the mid-70s to the mid-80s Fahrenheit (low to mid-20s Celsius), with slightly cooler temperatures in the evenings. Ocean temperatures are generally pleasant for swimming. While rainfall decreases compared to earlier months, occasional showers are still possible, especially on windward sides of the islands. These showers are often brief and contribute to the islands’ lush vegetation.
Understanding typical climate conditions for this period is beneficial for travelers planning vacations, allowing for appropriate packing and activity scheduling. It also informs businesses reliant on tourism, such as hotels and tour operators, to anticipate demand and adjust services accordingly. Historical weather data for May provides valuable insights into long-term trends and potential variations from year to year, enabling more accurate predictions and preparations.