October weather forecast
Barceloneta, PR

October in Barceloneta does not surrender the grip of the wet season right off, leading to an increase in rainfall days to 22.1, the hichest throughout the year, with an average rainfall volume of 3.46" (88mm). However, average temperatures start trending down, marking the onset of cooler days and nights. The sea temperature also gently cools, suggesting the impending end of the summer season.

Temperature

October's advent notes a subtle adjustment in average high-temperature to a still warm 84.7°F (29.3°C) from September. Barceloneta's nighttime temperature in October experiences a slight dip from daytime highs, falling to an average of 78.1°F (25.6°C).

Heat index

October's average heat index is evaluated at a very hot 95°F (35°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

May through July, October and November, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Barceloneta, in October, during 22.1 rainfall days, 3.46" (88mm) of precipitation is typically accumulated. Throughout the year, there are 213.7 rainfall days, and 28.66" (728mm) of precipitation is accumulated.

Ocean temperature

In Barceloneta, in October, the average water temperature is 84.6°F (29.2°C).
Note: Surface water temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are considered superb and highly pleasant for water activities over extended periods.

Daylight

In October, the average length of the day is 11h and 43min.
On the first day of the month, sunrise is at 6:16 am and sunset at 6:14 pm. On the last day of October, sunrise is at 6:25 am and sunset at 5:53 pm AST.

Sunshine

In Barceloneta, the average sunshine in October is 8.3h.

UV index

The months with the highest UV index in Barceloneta are April through November, 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 ordinary individuals.
Note: The maximum daily UV index of 7 in October converts into the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Beware! Reflecting off water and sand, UV rays are much stronger.