July weather forecast
Guayanilla, PR

As the calendar flips to July, Guayanilla witnesses another month of warm temperatures and humidity. The mercury tops the scale, reaching a peak average high of 86.4°F (30.2°C) for the year, indicating the arrival of Guayanilla's hottest month. The city's bustling seafront becomes a haven for those seeking sweet relief from the sun, while indoor pursuits also witness a surge in popularity. Though high in temperatures, July rewards its inhabitants with vivid sunsets, lush green sceneries, and an unparalleled vitality that commandeers Guayanilla.

Temperature

The transition from June to July in Guayanilla sees an average high-temperature of a tropical 86.4°F (30.2°C), indicating a minor variance from the prior month. In Guayanilla, July nights witness a steady temperature drop to a moderately hot 76.6°F (24.8°C).

Heat index

In July, the heat index is computed to be a fiery hot 98.6°F (37°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. 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. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Guayanilla, the average relative humidity in July is 77%.

Rainfall

In Guayanilla, in July, during 18.3 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 224.9 rainfall days, and 23.58" (599mm) of precipitation is accumulated.

Snowfall

In Guayanilla, snow does not fall in January through August, October through December.

Daylight

In Guayanilla, the average length of the day in July is 13h and 5min.
On the first day of the month, sunrise is at 5:55 am and sunset at 7:06 pm. On the last day of July, in Guayanilla, sunrise is at 6:05 am and sunset at 7:01 pm AST.

Sunshine

In Guayanilla, the average sunshine in July is 9.9h.

UV index

April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 7 during July, leads to the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete 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.