August weather forecast
Vieques, PR

August invites more precipitation to the island of Vieques, reaching an annual peak at 2.83" (72mm). Nonetheless, the weather remains sultry and tropical characterized by high temperatures and humidity. The daylight hours start to reduce gradually, signalling the slow progression towards autumn. Despite increased rainfall, August allows ample time for outdoor activities due to prolonged daylight hours. The sea remains remarkably warm, perfect for those who love to spend long hours in the water.

Temperature

The temperatures reach their highest averages in August, with highs of 84.2°F (29°C) and lows of 80.2°F (26.8°C).

Heat index

In August, the average heat index is appraised at a sweltering 95°F (35°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The months with the highest humidity are May through August, with an average relative humidity of 79%.

Rainfall

The month with the most rainfall is August, when the rain falls for 21.3 days and typically aggregates up to 2.83" (72mm) of precipitation.

Ocean temperature

In Vieques, Puerto Rico, the average seawater temperature in August is 84.4°F (29.1°C).
Note: Water temperatures from 77°F (25°C) to 84.2°F (29°C) make swimming, diving, and similar activities highly pleasurable and enjoyable for long periods without discomfort.

Daylight

The average length of the day in August in Vieques is 12h and 43min.
On the first day of August in Vieques, sunrise is at 6:00 am and sunset at 6:55 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 6:36 pm AST.

Sunshine

In August, the average sunshine is 8.7h.

UV index

The months with the highest UV index are January, March through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 7 during August leads to these advisories:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Attention! UV strength is notably upped by the reflection of sand and water.