May weather forecast
Halawa, HI

In May, the tropical landscape of Halawa steps closer to summer heats, bringing along a gentle rise in temperature. A more significant weather shift becomes apparent with a drop in rainfall to 3.3" (84mm), suggesting a transition into drier months. The daylight duration pushes past the 13-hour mark during May. An increase in UV index during this period demands protection against high exposure levels. Extended sunshine hours add radiance, turning Halawa into a sun-kissed paradise.

Temperature

May's weather displays an average high-temperature of a still warm 80.6°F (27°C), slightly varied from April's 78.8°F (26°C). During May, the temperature is averaged to a low of 64.4°F (18°C) at night.

Rainfall

In Halawa, in May, during 8 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. In Halawa, during the entire year, the rain falls for 116 days and collects up to 54.96" (1396mm) of precipitation.

Ocean temperature

In Halawa, in May, the average water temperature is 77°F (25°C).
Note: For any water activity, having surface water temperatures from 77°F (25°C) to 84.2°F (29°C) is considered outstanding and highly delightful for lengthened periods.

Daylight

In Halawa, the average length of the day in May is 13h and 9min.
On the first day of the month, sunrise is at 5:55 am and sunset at 6:52 pm. On the last day of May, sunrise is at 5:44 am and sunset at 7:04 pm HST.

Sunshine

The months with the most sunshine are May through September, with an average of 9h of sunshine.

UV index

The average daily maximum UV index in May is 11. A UV Index estimate of 11, and higher, represents an excessive health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 11 in May interprets into the following recommendations:
Ensure every crucial precaution is taken. Individuals with light skin could experience burns in under 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Regardless of cloud cover, it's recommended to apply generously and reapply often a sunscreen with an SPF of at least 30, especially after swimming or any outdoor activity. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.