June weather forecast
Inarajan, GU

June experiences the advent of the rainy season in full swing in Inarajan, Guam. There is a slight temperature escalation from May leading to warmer days. The higher volume of rainfall, recorded at 3.7" (94mm) spread over 25.4 days, enhances the lush greeneries of the island. The wind speed drops to 11.6mph (18.7km/h) propagating smoother sea voyages and water-based sports. Despite the frequent rain spells, the long daylight hours of 12.9 and a UV index of 7 warrant the use of adequate sun protection.

Temperature

Inarajan, Guam, experiences an average high-temperature of a still moderately hot 84.6°F (29.2°C) in June, marking an insignificant shift from 84.2°F (29°C) in May. Inarajan navigates through June with a barely noticeable decrease in temperature at night, stabilizing at a still moderately hot 83.3°F (28.5°C).

Heat index

The heat index value for June is evaluated at a torrid 95°F (35°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in June is 77%.

Rainfall

In Inarajan, Guam, in June, during 25.4 rainfall days, 3.7" (94mm) of precipitation is typically accumulated. Throughout the year, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.

Ocean temperature

In Inarajan, in June, the average water temperature is 84.7°F (29.3°C).
Note: Ideal surface water temperatures for any water activity fall between 77°F (25°C) and 84.2°F (29°C), offering maximum enjoyment for lengthened periods.

Daylight

June has the longest days of the year in Inarajan, with an average of 12h and 54min of daylight.
On the first day of the month, sunrise is at 5:53 am and sunset at 6:44 pm. On the last day of June, in Inarajan, Guam, sunrise is at 5:57 am and sunset at 6:51 pm ChST.

Sunshine

The month with the most sunshine is June, with an average of 10.6h of sunshine.

UV index

The months with the highest UV index are January through August, October through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In June, the maximum UV index of 7 translates into these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Note! Reflective surfaces like sand and water heighten the UV radiation levels.