July weather forecast
Guayanilla, PR

englishespañol中文
Share

Weather in July

As the calendar flips to July, Guayanilla witnesses another month of warm temperatures and humidity. The mercury tops the scale, reaching a peak average high of 86.4°F (30.2°C) for the year, indicating the arrival of Guayanilla's hottest month. The city's bustling seafront becomes a haven for those seeking sweet relief from the sun, while indoor pursuits also witness a surge in popularity. Though high in temperatures, July rewards its inhabitants with vivid sunsets, lush green sceneries, and an unparalleled vitality that commandeers Guayanilla.

Temperature

The transition from June to July in Guayanilla sees an average high-temperature of a tropical 86.4°F (30.2°C), indicating a minor variance from the prior month. In Guayanilla, July nights witness a steady temperature drop to a moderately hot 76.6°F (24.8°C).

Heat index

In July, the heat index is computed to be a fiery hot 98.6°F (37°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Guayanilla, the average relative humidity in July is 77%.

Rainfall

In Guayanilla, in July, during 18.3 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 224.9 rainfall days, and 23.58" (599mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Guayanilla, the average length of the day in July is 13h and 5min.
On the first day of the month, sunrise is at 5:55 am and sunset at 7:06 pm. On the last day of July, in Guayanilla, sunrise is at 6:05 am and sunset at 7:01 pm AST.

Sunshine

In Guayanilla, the average sunshine in July is 9.9h.

UV index

April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 7 during July, leads to the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

Frequently asked questions

How hot is it in Guayanilla in July?

In July, in Guayanilla, the average high-temperature is 86.4°F (30.2°C), and the average low-temperature is 76.6°F (24.8°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in July is computed to be 98.6°F (37°C).

What is the average humidity in July in Guayanilla?

In July, the average relative humidity in Guayanilla is 77%.

How much does it rain in Guayanilla in July?

In Guayanilla, Puerto Rico, in July, during 18.3 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

When it does not snow in Guayanilla?

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

How many hours of daylight does Guayanilla have in July?

In Guayanilla, the average day length in July is 13h and 5min.

What time are sunrise and sunset in July in Guayanilla?

On the first day of July, sunrise is at 5:55 am and sunset at 7:06 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:01 pm AST.

How long on average sun shines in July in Guayanilla?

In July, the average sunshine duration in Guayanilla, Puerto Rico, is 9.9h.

What is the month with the highest UV index in Guayanilla?

April through October, with an average maximum UV index of 7, are months with the highest UV index in Guayanilla, Puerto Rico.

What is the UV index reading in July in Guayanilla?

In July, the average daily maximum UV index in Guayanilla, Puerto Rico, is 7. A UV Index estimate of 6 to 7 represents a high health threat 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 July
Guayanilla, PR

Average temperature in July - Guayanilla, PR
  • Average high temperature in July: 86.4°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 July: 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 July
Guayanilla, PR

Average pressure in July - Guayanilla, PR
  • Average pressure in July: 30"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 July
Guayanilla, PR

Average wind speed in July - Guayanilla, PR
  • Average wind speed in July: 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 July
Guayanilla, PR

Average humidity in July - Guayanilla, PR
  • Average humidity in July: 77%

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

Average rainfall in July
Guayanilla, PR

Average rainfall in July - Guayanilla, PR
  • Average rainfall in July: 2.2"

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 July
Guayanilla, PR

Average rainfall days in July - Guayanilla, PR
  • Average rainfall days in July: 18.3 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 July
Guayanilla, PR

Average snowfall days in July - Guayanilla, PR
  • Average snowfall days in July: 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 July /
Average sunshine in July
Guayanilla, PR

Average daylight in July / Average sunshine in July - Guayanilla, PR
  • Average daylight in July: 13h and 1min

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 July: 9h and 5min

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 July
Guayanilla, PR

Average sunshine days in July - Guayanilla, PR
  • Average sunshine days in July: 10.1 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 July
Guayanilla, PR

Average UV index in July - Guayanilla, PR
  • Average UV index in July: 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 July
Guayanilla, PR

Average cloud cover in July - Guayanilla, PR
  • Average cloud cover in July: 28

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 July
Guayanilla, PR

Average visibility in July - Guayanilla, PR
  • Average visibility in July: 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

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location