June weather forecast
Hagåtña, GU

As the rest of the world embraces summer, Hagåtña, Guam retains its characteristic tropical environment into June. Visitors can relish the balmy weather while exploring the city's cultural attractions and natural landmarks. Downpours become slightly more frequent, culminating in an accumulated rainfall of 3.7" (94mm) across a spread of 25.4 days. Despite this, the city exudes a jovial atmosphere- celebrating life, culture, history, and the joy of cohabiting with nature.

Temperature

Hagåtña in June witnesses an average high-temperature of a still warm 84.6°F (29.2°C), indicating a slight variation from May's 84.2°F (29°C). Throughout June, Hagåtña observes a steady low-temperature average of 83.3°F (28.5°C), reflecting a minor dip from daytime highs.

Heat index

In June, the average heat index is appraised at a very hot 95°F (35°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

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

Rainfall

In Hagåtña, Guam, during June, the rain falls for 25.4 days and regularly aggregates up to 3.7" (94mm) of precipitation. Throughout the year, in Hagåtña, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.

Ocean temperature

In Hagåtña, the average seawater temperature in June is 84.7°F (29.3°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.

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 5:52 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 in Hagåtña, with an average of 10.6h of sunshine.

UV index

January through August, October through December, with an average maximum UV index of 7, are months with the highest UV index in Hagåtña, Guam. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: During June, 7 as the daily maximum UV index converts into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. 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. Boost your sun resistance with garments that are densely woven yet spacious. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.