June weather forecast
Merizo, GU

June provides an inviting prelude to the tropical summer of Merizo, Guam. Marking the middle of the year, this month offers showers dispersed across a large number of days, indicative of the rainy season. June witnesses a marginal rise in temperature, with an average high of 84.6°F (29.2°C), indicating the peak of summer. Furthermore, it is characterized by strong winds and high sea temperatures. Outdoor activities remain viable during this time, despite the intermittent showers.

Temperature

June's onset records a minor alteration in the average high-temperature to a still warm 84.6°F (29.2°C) from May's 84.2°F (29°C). An average low-temperature of 83.3°F (28.5°C) characterizes Merizo's June nights.

Heat index

The heat index for June is evaluated at a very hot 95°F (35°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In June, the average relative humidity is 77%.

Rainfall

In June, the rain falls for 25.4 days. Throughout June, 3.7" (94mm) of precipitation is accumulated. In Merizo, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.

Ocean temperature

In June, the average ocean temperature is 84.7°F (29.3°C).
Note: With water temperature from 77°F (25°C) to 84.2°F (29°C), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.

Daylight

The month with the longest days in Merizo, Guam, is June, 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, sunrise is at 5:58 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 in Merizo are January through August, October through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 7 during June translates into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Heads up! UV intensity is amplified by reflections from water and sand.