July weather forecast
Piti, GU

July is famous for its warm summer streak in Piti, Guam. Compared to June, conditions continue to be hot, yet manageable owing to the irresistible beaches and recreational water sports popular in the city. Although the weather becomes hotter moving into August, it is the generous rainfall of 7.52" (191mm) in July that steals the show, making it the wettest month of the year.

Temperature

Piti's warmest season falls during July and August, averaging a high-temperature of 84.7°F (29.3°C).

Heat index

The average heat index in July is appraised at a very hot 95°F (35°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In July, the average relative humidity is 77%.

Rainfall

In Piti, Guam, in July, during 28.9 rainfall days, 7.52" (191mm) of precipitation is typically accumulated. In Piti, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.

Ocean temperature

In Piti, the average seawater temperature in July is 85.1°F (29.5°C).
Note: For swimming, diving, and enjoying other water activities, the range of 77°F (25°C) to 84.2°F (29°C) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.

Daylight

In Piti, the average length of the day in July is 12h and 50min.
On the first day of the month, sunrise is at 5:57 am and sunset at 6:52 pm. On the last day of July, sunrise is at 6:05 am and sunset at 6:49 pm ChST.

Sunshine

The average sunshine in July is 8.6h.

UV index

January through August, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 7 in July converts into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Caution! Sand and water reflections can notably increase the UV radiation intensity.