May weather forecast
Hawaii, USA

Flag of Hawaii, USA
Flag of Hawaii, USA

Weather in May

May is a wonderful time to visit Hawaii that begins the dry season, and the average temperatures rise to the 72°F (22.2°C) to 81°F (27.2°C) range.
A drop in cloud cover, particularly at the mountain peaks, and humidity level are the features of the dry season as the sun returns to full duty with average sunshine of 10 hours a day.
A constant supply of fresh ocean air keeps the temperatures moderate and unvarying over long periods.
Showers are frequent on the windward side of coasts such as Hilo, which accumulates 8.1" (206mm) in May where average temperatures are between 66°F (18.9°C) and 81°F (27.2°C).
Light clothing is the order of the day except for botanists and researchers who explore the tropical rainforests in the highlands. Caution - do not take the Hawaiian sun lightly due to the moderate temperatures as the sun rays are intense, and there is a lack of humidity; use plenty of sun protection.


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