October weather forecast
Guayanilla, PR

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Weather in October

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.

Frequently asked questions

How hot does it get in Guayanilla in October?

The average high-temperature, in October, in Guayanilla, is 85.1°F (29.5°C), while the average low-temperature is 76.6°F (24.8°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in October is computed to be 96.8°F (36°C).

What is the average humidity in October in Guayanilla?

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

How many days does it rain in October in Guayanilla?

In Guayanilla, Puerto Rico, in October, it is raining for 21.9 days, with typically 3.11" (79mm) of accumulated precipitation.

When it does not snow in Guayanilla?

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

Does it snow in Guayanilla in October?

In October, in Guayanilla, it doesn't snow. September is the latest month when it typically snows.

What is the average length of the day in October in Guayanilla?

In October, the average day length in Guayanilla is 11h and 44min.

When are sunrise and sunset in October in Guayanilla?

On the first day of October, 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.

How long on average sun shines in October in Guayanilla?

The average sunshine duration in October in Guayanilla, Puerto Rico, is 8.5h.

What are the months with the highest UV index in Guayanilla?

The months with the highest UV index are April through October, with an average maximum UV index of 7.

How high is the UV index in October in Guayanilla?

In Guayanilla, Puerto Rico, the average daily maximum UV index in October is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Guayanilla, PR

Average temperature in October - Guayanilla, PR
  • Average high temperature in October: 85.1°F

The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is January (81.9°F).

  • Average low temperature in October: 76.6°F

The months with the highest average low temperature are July, August and October (76.6°F).
The coldest month (with the lowest average low temperature) is March (71.4°F).

Average pressure in October
Guayanilla, PR

Average pressure in October - Guayanilla, PR
  • Average pressure in October: 29.89"Hg

The months with the highest atmospheric pressure are January and February (30.01"Hg).
The month with the lowest atmospheric pressure is October (29.89"Hg).

Average wind speed in October
Guayanilla, PR

Average wind speed in October - Guayanilla, PR
  • Average wind speed in October: 5.8mph

The windiest month (with the highest average wind speed) is July (8mph).
The calmest month (with the lowest average wind speed) is November (5.6mph).

Average humidity in October
Guayanilla, PR

Average humidity in October - Guayanilla, PR
  • Average humidity in October: 79%

The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is March (75%).

Average rainfall in October
Guayanilla, PR

Average rainfall in October - Guayanilla, PR
  • Average rainfall in October: 3.11"

The wettest month (with the highest rainfall) is September (3.58").
The driest month (with the least rainfall) is January (0.71").

Average rainfall days in October
Guayanilla, PR

Average rainfall days in October - Guayanilla, PR
  • Average rainfall days in October: 21.9 days

The month with the highest number of rainy days is November (22.5 days).
The month with the least rainy days is February (14.8 days).

Average snowfall days in October
Guayanilla, PR

Average snowfall days in October - Guayanilla, PR
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

Average daylight in October /
Average sunshine in October
Guayanilla, PR

Average daylight in October / Average sunshine in October - Guayanilla, PR
  • Average daylight in October: 11h and 4min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in October: 8h and 3min

The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is November (Average sunshine: 7h and 6min).

Average sunshine days in October
Guayanilla, PR

Average sunshine days in October - Guayanilla, PR
  • Average sunshine days in October: 6.3 days

The month with the most sunshine days is June (12.2 days).
The month with the least sunshine days is November (5.1 days).

Average UV index in October
Guayanilla, PR

Average UV index in October - Guayanilla, PR
  • Average UV index in October: 7

The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 6).

Average cloud cover in October
Guayanilla, PR

Average cloud cover in October - Guayanilla, PR
  • Average cloud cover in October: 26

The month with the most cloud cover is May (Cloud cover 30).
The months with the least cloud cover are January and February (Cloud cover 22).

Average visibility in October
Guayanilla, PR

Average visibility in October - Guayanilla, PR
  • Average visibility in October: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Guayanilla, Puerto Rico, USA

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