Hilo
Hawaii, USA
Long-term weather forecast
Long-term weather forecast

June weather forecast and climate
Hilo, HI

The first month of the summer, June, is still a warm month in Hilo, Hawaii, with average temperature ranging between min 68.2°F (20.1°C) and max 82.2°F (27.9°C).

Temperature

In Hilo, the average high-temperature is relatively the same as in May - a still moderately hot 82.2°F (27.9°C). In June, in Hilo, Hawaii, the average low-temperature is 68.2°F (20.1°C).

Humidity

The average relative humidity in June is 77.4%.

Rainfall

The month with the least rainfall is June when the rain falls for 25.1 days and typically collects 4.3" (108mm) of precipitation.

Ocean temperature

In Hilo, in June, the average water temperature is 77.7°F (25.4°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The month with the longest days in Hilo is June, with an average of 13.3h of daylight.

Sunshine

The month with the most sunshine in Hilo is June, with an average of 5.9h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an excessive health risk from unsafe exposure to the UV radiation for the average person.
The daily maximum UV index of 12 interpret into the following advice:
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.

What is the temperature in June in Hilo?

The average high-temperature, in June, is 82.2°F (27.9°C), while the average low-temperature is 68.2°F (20.1°C).

What is the average humidity in June in Hilo?

In June, the average relative humidity in Hilo is 77.4%.

How many days does it rain in June in Hilo?

In Hilo, during June, the rain falls for 25.1 days and regularly aggregates up to 4.3" (108mm) of precipitation.

What is the driest month in Hilo?

The month with the least rainfall in Hilo is June when the rain falls for 25.1 days and typically collects 4.3" (108mm) of precipitation.

How warm is the water in June in Hilo?

In Hilo, the average seawater temperature in June is 77.7°F (25.4°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

When are the longest days in Hilo?

The month with the longest days is June, with an average of 13.3h of daylight.

What is the average length of the day in June in Hilo?

The average length of the day in June is 13.3h.

What month has the most sunshine in Hilo?

The month with the most sunshine is June, with an average of 5.9h of sunshine.

How many hours of sunshine does Hilo have in June?

In Hilo, Hawaii, the average sunshine in June is 5.9h.

What is the month with the highest UV index in Hilo?

Months with the highest UV index in Hilo are March through September, with an average maximum UV index of 12.

How high is the UV index in June in Hilo?

In Hilo, Hawaii, the average daily maximum UV index in June is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in June - Hilo, HI
  • Average high temperature in June: 82.2°F

The warmest month (with the highest average high temperature) is September (83.3°F).
The month with the lowest average high temperature is February (78.8°F).

  • Average low temperature in June: 68.2°F

The month with the highest average low temperature is September (69.7°F).
The coldest month (with the lowest average low temperature) is February (63.5°F).

Average humidity in June - Hilo, HI
  • Average humidity in June: 77.4%

The month with the highest relative humidity is November (80.3%).
The month with the lowest relative humidity is February (76%).

Average rainfall in June - Hilo, HI
  • Average rainfall in June: 4.3"

The wettest month (with the highest rainfall) is March (10.6").
The driest month (with the lowest rainfall) is June (4.3").

Average rainfall days in June - Hilo, HI
  • Average rainfall days in June: 25.1 days

Months with the highest number of rainy days are July and August (26.8 days).
The month with the lowest number of rainy days is February (15.8 days).

Average sea temperature in June - Hilo, HI
  • Average sea temperature in June: 77.7°F

The best month for swimming (with the highest average sea temperature) is September (79.3°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

Average daylight in June / Average sunshine in June - Hilo, HI
  • Average daylight in June: 13.3h

The month with the longest days is June (Average daylight: 13.3h).
The month with shortest days is December (Average daylight: 11h).

  • Average sunshine in June: 5.9h

The month with most sunshine is June (Average sunshine: 5.9h).
The month with least sunshine is November (Average sunshine: 3.8h).

Average UV index in June - Hilo, HI
  • Average UV index in June: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).