June weather forecast and climate
Halawa, HI

The first month of the summer, June, is still a warm month in Halawa, Hawaii, with average temperature ranging between max 80.6°F (27°C) and min 66.2°F (19°C).

Temperature

In June, the average high-temperature remains the same as in May - a still moderately hot 80.6°F (27°C). In June, the average low-temperature is 66.2°F (19°C).

Rainfall

The month with the least rainfall is June when the rain falls for 7 days and typically collects 1.85" (47mm) of precipitation.

Ocean temperature

In Halawa, Hawaii, the average seawater temperature is 77°F (25°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The month with the longest days in Halawa is June, with an average of 13.4h of daylight.

Sunshine

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

UV index

June through August, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 12 transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.