July weather forecast
Juana Díaz, PR

Weather in July

July is a tropical summer month in Juana Díaz, Puerto Rico, with an average temperature ranging between max 86.2°F (30.1°C) and min 75.9°F (24.4°C).

Temperature

In July, the average high-temperature is relatively the same as in June - a hot 86.2°F (30.1°C). In July, in Juana Díaz, the average low-temperature is 75.9°F (24.4°C).

Heat index

In July, the average heat index is calculated to be a torrid 99.3°F (37.4°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, clothing, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Juana Díaz, the average relative humidity in July is 78%.

Rainfall

In Juana Díaz, Puerto Rico, during July, the rain falls for 20.7 days and regularly aggregates up to 2.91" (74mm) of precipitation. In Juana Díaz, Puerto Rico, during the entire year, the rain falls for 249.1 days and collects up to 28.82" (732mm) of precipitation.

Ocean temperature

In Juana Díaz, the average water temperature is 83.7°F (28.7°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Juana Díaz, the average length of the day in July is 13h and 5min.
On the first day of July in Juana Díaz, sunrise is at 5:54 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:00 pm AST.

Sunshine

In Juana Díaz, Puerto Rico, the average sunshine in July is 9.8h.

UV index

The months with the highest UV index in Juana Díaz are May through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 7 in July transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in July in Juana Díaz?

In Juana Díaz, Puerto Rico, in July, the average high-temperature is 86.2°F (30.1°C), and the average low-temperature is 75.9°F (24.4°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 99.3°F (37.4°C).

What is the average humidity in July in Juana Díaz?

In July, the average relative humidity in Juana Díaz, Puerto Rico, is 78%.

How much does it rain in Juana Díaz in July?

In Juana Díaz, during July, the rain falls for 20.7 days and regularly aggregates up to 2.91" (74mm) of precipitation.

What is the ocean temperature in July in Juana Díaz?

In Juana Díaz, Puerto Rico, the average seawater temperature in July is 83.7°F (28.7°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in July in Juana Díaz?

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

What time are sunrise and sunset in July in Juana Díaz?

In July, on the first day of the month, sunrise is at 5:54 am and sunset at 7:05 pm. On the last day of the month, in Juana Díaz, sunrise is at 6:04 am and sunset at 7:00 pm AST.

How many hours of sunshine does Juana Díaz have in July?

The average sunshine duration in July is 9.8h.

When is the highest UV index in Juana Díaz?

The months with the highest UV index in Juana Díaz, Puerto Rico, are May through October, with an average maximum UV index of 7.

What is the UV index reading in July in Juana Díaz?

In Juana Díaz, Puerto Rico, the average daily maximum UV index in July is 7. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in July
Juana Díaz, PR

Average temperature in July - Juana Díaz, PR
  • Average high temperature in July: 86.2°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°F).

  • Average low temperature in July: 75.9°F

The month with the highest average low temperature is August (76.6°F).
The coldest months (with the lowest average low temperature) are February and March (70.9°F).

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Average pressure in July
Juana Díaz, PR

Average pressure in July - Juana Díaz, PR
  • Average pressure in July: 30"Hg

The months with the highest atmospheric pressure are January and February (30.01"Hg).
The months with the lowest atmospheric pressure are October and November (29.9"Hg).

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Average wind speed in July
Juana Díaz, PR

Average wind speed in July - Juana Díaz, 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 (5.5mph).

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Average humidity in July
Juana Díaz, PR

Average humidity in July - Juana Díaz, PR
  • Average humidity in July: 78%

The month with the highest relative humidity is November (81%).
The month with the lowest relative humidity is March (76%).

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Average rainfall in July
Juana Díaz, PR

Average rainfall in July - Juana Díaz, PR
  • Average rainfall in July: 2.91"

The wettest month (with the highest rainfall) is September (4.45").
The driest month (with the least rainfall) is February (0.83").

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Average rainfall days in July
Juana Díaz, PR

Average rainfall days in July - Juana Díaz, PR
  • Average rainfall days in July: 20.7 days

The month with the highest number of rainy days is October (24.8 days).
The month with the least rainy days is February (15 days).

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Average sea temperature in July
Juana Díaz, PR

Average sea temperature in July - Juana Díaz, PR
  • Average sea temperature in July: 83.7°F

The best month for swimming (with the highest average sea temperature) is September (85.3°F).
The coldest month (with the lowest average sea temperature) is March (79.3°F).

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Average daylight in July /
Average sunshine in July
Juana Díaz, PR

Average daylight in July / Average sunshine in July - Juana Díaz, PR
  • Average daylight in July: 13h and 5min

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 4min).

  • Average sunshine in July: 9.8h

The month with the most sunshine is June (Average sunshine: 10.9h).
The month with the least sunshine is November (Average sunshine: 6.9h).

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Average sunshine days in July
Juana Díaz, PR

Average sunshine days in July - Juana Díaz, PR
  • Average sunshine days in July: 4.8 days

The month with the most sunshine days is March (7.6 days).
The month with the least sunshine days is October (2.6 days).

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Average UV index in July
Juana Díaz, PR

Average UV index in July - Juana Díaz, PR
  • Average UV index in July: 7

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

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Average cloud cover in July
Juana Díaz, PR

Average cloud cover in July - Juana Díaz, PR
  • Average cloud cover in July: 32

The month with the most cloud cover is May (Cloud cover 34).
The month with the least cloud cover is February (Cloud cover 25).

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Average visibility in July
Juana Díaz, PR

Average visibility in July - Juana Díaz, 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).

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