August weather forecast
Arroyo, PR

August continues to uphold the summer spirit in Arroyo, with warm temperatures and a high humidity index. The rainfall also reaches its annual zenith at 3.39" (86mm). Despite the climatic variations, locals and visitors can relish indulging in diverse activities. The sea temperature remains consistent, allowing for an enjoyable dip in the ocean. August's weather encapsulates the quintessential tropical climate, with a perfect blend of sun, wind, and occasional rainfall.

Temperature

August is Arroyo's warmest month, registering average high temperatures of 85.3°F (29.6°C) and lows of 76.6°F (24.8°C).

Heat index

The heat index for August is evaluated at a very hot 96.8°F (36°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. 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 and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Arroyo, the average relative humidity in August is 80%.

Rainfall

In Arroyo, Puerto Rico, in August, it is raining for 23.3 days, with typically 3.39" (86mm) of accumulated precipitation. In Arroyo, Puerto Rico, during the entire year, the rain falls for 255.3 days and collects up to 29.41" (747mm) of precipitation.

Ocean temperature

In August, the average ocean temperature is 84.6°F (29.2°C).
Note: Water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are pleasurable, without feeling uncomfortable even during extended periods.

Daylight

In Arroyo, the average length of the day in August is 12h and 43min.
On the first day of the month, sunrise is at 6:02 am and sunset at 6:58 pm. On the last day of August, sunrise is at 6:09 am and sunset at 6:38 pm AST.

Sunshine

In August, the average sunshine is 8.6h.

UV index

May 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 threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during August leads to these instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be on guard! The reflective nature of sand and water boosts UV exposure.