October weather forecast
Vega Alta, PR

October brings further cooling in Vega Alta, with a decrease in both high and low temperatures compared to September. Relative humidity registers a slight increase, with October experiencing more cloudy days compared to September. As the daylight starts to shrink, the month sees a decrease in UV index and sunshine days. October's wind conditions continue to calm, averaging at 6.8mph (10.9km/h). Substantial rainfall measuring 3.82" (97mm) mark October as a relatively wet month.

Temperature

With October's arrival, Vega Alta's weather records an average high-temperature of a still warm 84.7°F (29.3°C), marking little difference from September's 85.1°F (29.5°C). Nighttime temperature sees a small decrement from daytime highs, dipping to an average of 78.4°F (25.8°C) during October.

Heat index

Throughout October, the heat index is appraised at a fiery hot 95°F (35°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through 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

In October, the average relative humidity is 78%.

Rainfall

The month with the most rainfall is October, when the rain falls for 24 days and typically aggregates up to 3.82" (97mm) of precipitation.

Daylight

The average length of the day in October is 11h and 43min.
On the first day of October, sunrise is at 6:15 am and sunset at 6:13 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 5:53 pm AST.

Sunshine

The average sunshine in October is 8.2h.

UV index

The months with the highest UV index are May through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 7 during October leads to these advisories:
Guard oneself from overexposure. Defence against sun injury is vital. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.