June weather forecast
Agat, GU

June, the first month of the summer in Agat, is also a moderately hot month, with an average temperature varying between 84.6°F (29.2°C) and 83.3°F (28.5°C).

Temperature

In June, the average high-temperature is relatively the same as in May - a still moderately hot 84.6°F (29.2°C). In Agat, Guam, the average low-temperature is 83.3°F (28.5°C).

Heat index

In June, the average heat index is estimated at a very hot 95°F (35°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like clothing, metabolic differences, wind, and activity influence one's weather impression. 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In Agat, Guam, the average relative humidity in June is 77%.

Rainfall

In Agat, in June, it is raining for 25.4 days, with typically 3.7" (94mm) of accumulated precipitation. In Agat, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.

Daylight

The month with the longest days is June, with an average of 12h and 54min of daylight.
On the first day of June, sunrise is at 5:53 am and sunset at 6:44 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 6:52 pm ChST.

Sunshine

June has the most sunshine of the year, 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 threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in June interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.