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

The shift to July signals an average high-temperature of a still moderately hot 84.7°F (29.3°C), subtly varied from June's 84.4°F (29.1°C). During July, Arroyo's nights hold steady with an average temperature of 76.6°F (24.8°C), barely dropping from the daytime highs.

Heat index

The heat index for July is evaluated 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.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In July, the average relative humidity is 79%.

Rainfall

In July, the rain falls for 21.8 days. Throughout July, 3.11" (79mm) of precipitation is accumulated. 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, in July, the average water temperature is 83.8°F (28.8°C).
Note: For activities such as swimming and diving, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

The average length of the day in July 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 Arroyo, the average sunshine in July 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 risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 7 during July leads to these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.