October weather forecast
Guayanilla, PR

As October arrives in Guayanilla, the weather undergoes another gradual change. The lushness resultant from September's generous rainfall gives way to a more crisp and clear atmosphere. Average daily sunshine hours drop slightly to 8.5 hours, allowing for less intense and more comfortable afternoons. Though October doesn't serve up any extremes in terms of Guayanilla's annual weather patterns, it offers an agreeable mix of mild weather conditions. The city’s outdoor locales bask under a mellow sun, presenting a blissful scene for sightseers and locals alike.

Temperature

A minor adjustment in Guayanilla's average high-temperature is noted with the start of October, touching a moderately hot 85.1°F (29.5°C) from September's 86.2°F (30.1°C). In October, Guayanilla temperatures settle at a low of 76.6°F (24.8°C) during the nights, reflecting a minor change from daytime highs.

Heat index

The average heat index in October is computed to be a very hot 96.8°F (36°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. 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.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Guayanilla, the average relative humidity in October is 79%.

Rainfall

In October, the rain falls for 21.9 days. Throughout October, 3.11" (79mm) of precipitation is accumulated. Throughout the year, there are 224.9 rainfall days, and 23.58" (599mm) of precipitation is accumulated.

Snowfall

In Guayanilla, Puerto Rico, snow does not fall in January through August, October through December.

Daylight

In October, the average length of the day is 11h and 44min.
On the first day of October in Guayanilla, sunrise is at 6:17 am and sunset at 6:15 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 5:55 pm AST.

Sunshine

In October, the average sunshine in Guayanilla is 8.5h.

UV index

The months with the highest UV index in Guayanilla are April through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 7 in October translates into the following instructions:
Skirt overexposure. People with light complexions might get scorched in under 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.