June weather forecast
Halawa, HI

As the middle of the year approaches, June brings further escalation of temperatures in Halawa, Hawaii. Drier conditions become more evident with the lowest rainfall of the year, at just 1.9" (48mm). The daylight duration peaks, complemented by an equal hike in sunshine hours. The sea temperature experiences a marginal rise, promising pleasurable aquatic activities. As the UV index hits its stride, a keen focus on sun safety is paramount.

Temperature

The ushering in of June brings an average high-temperature of a still warm 80.6°F (27°C), closely mirroring the 80.6°F (27°C) of May. During June, Halawa's temperature falls to a steady low-temperature average of 66.2°F (19°C).

Rainfall

June is the month with the least rainfall in Halawa, Hawaii. Rain falls for 7 days and accumulates 1.85" (47mm) of precipitation.

Ocean temperature

In Halawa, in June, the average water temperature is 77°F (25°C).
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.

Daylight

June has the longest days of the year in Halawa, with an average of 13h and 24min of daylight.
On the first day of June in Halawa, sunrise is at 5:44 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 7:12 pm HST.

Sunshine

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

UV index

The months with the highest UV index in Halawa are June through August, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 12 during June translates into the following directions:
Adopt all important safety measures, unprotected skin may burn rapidly. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Even if it's cloudy, generously apply and frequently reapply a sunscreen with no less than a 30 sun protection factor after each swim or outdoor exercise. Warning! The reflection of sand and water increases the UV dose.