July weather forecast and climate
Key Largo, FL

A clear seascape and cloudy evening sky in Key Largo, Florida
A clear seascape and cloudy evening sky in Key Largo, Florida

Weather in July

July, the same as June, is a moderately hot summer month in Key Largo, Florida, with average temperature varying between 84.7°F (29.3°C) and 82.4°F (28°C).

Temperature

In July, the average high-temperature is almost the same as in June - a still moderately hot 84.7°F (29.3°C). The average low-temperature, in Key Largo, Florida, is 82.4°F (28°C).

Heat index

The average heat index is calculated to a tropical 93.6°F (34.2°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the 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 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like wind, differences in body mass, height, and shape, metabolic differences, and activity influence one's weather impression. 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Key Largo, the average relative humidity is 74%.

Rainfall

In July, in Key Largo, the rain falls for 20.9 days. Throughout July, 3.7" (94mm) of precipitation is accumulated. In Key Largo, during the entire year, the rain falls for 190.1 days and collects up to 27.05" (687mm) of precipitation.

Ocean temperature

In July, the average ocean temperature in Key Largo is 85.6°F (29.8°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In July, the average length of the day is 13.5h.

Sunshine

The month with the most sunshine in Key Largo is July, with an average of 11h of sunshine.

UV index

Months with the highest UV index in Key Largo are April through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: In July, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in July in Key Largo?

In July, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 82.4°F (28°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, is calculated to 93.6°F (34.2°C).

What is the average humidity in July in Key Largo?

The average relative humidity in July in Key Largo is 74%.

How many days does it rain in July in Key Largo?

In July, the rain falls for 20.9 days. Throughout July, 3.7" (94mm) of precipitation is accumulated.

What is the ocean temperature in July in Key Largo?

In July, the average ocean temperature in Key Largo, Florida, is 85.6°F (29.8°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in July in Key Largo?

In July, the average length of the day is 13.5h.

What month has the most sunshine in Key Largo?

With an average of 11h of sunshine, July has the most sunshine of the year in Key Largo.

How many hours of sunshine does Key Largo have in July?

In Key Largo, Florida, the average sunshine in July is 11h.

What are the months with the highest UV index in Key Largo?

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

What is the UV index reading in July in Key Largo?

In July, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.

Average temperature in July
Key Largo, FL

Average temperature in July - Key Largo, FL
  • Average high temperature in July: 84.7°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (72.7°F).

  • Average low temperature in July: 82.4°F

The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (66.9°F).

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Average pressure in July
Key Largo, FL

Average pressure in July - Key Largo, FL
  • Average pressure in July: 30.02"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are September and October (29.94").

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Average wind speed in July
Key Largo, FL

Average wind speed in July - Key Largo, FL
  • Average wind speed in July: 8.9mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).

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Average humidity in July
Key Largo, FL

Average humidity in July - Key Largo, FL
  • Average humidity in July: 74%

Months with the highest relative humidity are February, June and December (76%).
The month with the lowest relative humidity is March (73%).

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Average rainfall in July
Key Largo, FL

Average rainfall in July - Key Largo, FL
  • Average rainfall in July: 3.7"

The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is March (0.59").

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Average rainfall days in July
Key Largo, FL

Average rainfall days in July - Key Largo, FL
  • Average rainfall days in July: 20.9 days

The month with the highest number of rainy days is September (22.9 days).
The month with the least rainy days is February (9.7 days).

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Average sea temperature in July
Key Largo, FL

Average sea temperature in July - Key Largo, FL
  • Average sea temperature in July: 85.5°F

The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).

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Average daylight in July /
Average sunshine in July
Key Largo, FL

Average daylight in July / Average sunshine in July - Key Largo, FL
  • Average daylight in July: 13.5h

The month with the longest days is June (Average daylight: 13.7h).
The month with the shortest days is December (Average daylight: 10.6h).

  • Average sunshine in July: 11h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 6.4h).

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Average sunshine days in July
Key Largo, FL

Average sunshine days in July - Key Largo, FL
  • Average sunshine days in July: 8.4 days

The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is September (5.2 days).

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Average UV index in July
Key Largo, FL

Average UV index in July - Key Largo, FL
  • Average UV index in July: 7

Months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).

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Average cloud cover in July
Key Largo, FL

Average cloud cover in July - Key Largo, FL
  • Average cloud cover in July: 28

The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 26).

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Average visibility in July
Key Largo, FL

Average visibility in July - Key Largo, FL
  • Average visibility in July: 6mi

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

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