July weather forecast
Arroyo, PR

In July the weather in Arroyo has slightly risen temperatures, peaking at 84.7°F (29.3°C) during the day. Coupled with relatively stronger winds, the city experience high evaporation rates. This period displays the distinctive character of Arroyo's summer, blending warmth with more significant cloud cover. Despite the higher temperatures and considerable humidity, the bright and lively atmosphere of Arroyo remains inviting to outdoor enthusiasts. The increase in the daylight duration coupled with prolonged sunshine creates a refreshing summery vibe, quintessential to this period.

Temperature

July's average high-temperature in Arroyo stands at a still warm 84.7°F (29.3°C), showing little deviation from June's 84.4°F (29.1°C). Arroyo's nights throughout July are marked by an average low temperature of 76.6°F (24.8°C), a minor drop from the day's high.

Heat index

The average heat index in July is calculated to be a sweltering 95°F (35°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In July, the average relative humidity is 79%.

Rainfall

In Arroyo, in July, it is raining for 21.8 days, with typically 3.11" (79mm) of accumulated precipitation. In Arroyo, during the entire year, the rain falls for 255.3 days and collects up to 29.41" (747mm) of precipitation.

Ocean temperature

In Arroyo, the average seawater temperature in July is 83.8°F (28.8°C).
Note: For swimming, diving, or other water activities, the temperature range of 77°F (25°C) to 84.2°F (29°C) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

In July, the average length of the day in Arroyo is 13h and 5min.
On the first day of July in Arroyo, sunrise is at 5:52 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 6:58 pm AST.

Sunshine

In July, the average sunshine in Arroyo is 9.6h.

UV index

The months with the highest UV index are May through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In July, a daily UV index of 7 turns into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Enhance your sun protection with tightly woven, yet airy clothing. Caution! Sand and water reflections can notably increase the UV radiation intensity.