July weather forecast
Key Largo, FL

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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 is typically the warmest month in Key Largo, with temperatures soaring above those seen in June. With the significant increase in heat, the frequency and intensity of rain also heighten, providing occasional relief from the scorching sun. However, the majority of days are sun-drenched, making the beach an appealing destination. Sea temperatures reach their annual peak, providing an ideal environment for aquatic life and activities. Notably, July features the highest temperature of the year at 84.7°F (29.3°C) and witnesses a high rainfall of 3.7" (94mm).

Temperature

With July's arrival, Key Largo notes an average high-temperature of a still moderately hot 84.7°F (29.3°C), closely following the trend of the preceding month. In Key Largo, the nocturnal temperatures throughout July show a marginal dip from the daytime averages, settling at a still moderately hot 82.4°F (28°C).

Heat index

For most parts of July, the heat index is estimated at a hot 93.2°F (34°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Note that heat index values are valued for light wind and location in the shade. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

In July, the average relative humidity in Key Largo 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 Key Largo, in July, the average water temperature is 85.6°F (29.8°C).
Note: Water temperatures in the range of 77°F (25°C) to 84.2°F (29°C) are warm and delightful, ensuring comfort during water activities over extended periods.

Daylight

In July, the average length of the day in Key Largo is 13h and 31min.
On the first day of July, sunrise is at 6:35 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 8:07 pm EDT.

Sunshine

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

UV index

The months with the highest UV index in Key Largo are April through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 7 in July, converts into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. 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. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
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Frequently asked questions

How hot is it in Key Largo in July?

The average high-temperature and low-temperature during July are 84.7°F (29.3°C) and 82.4°F (28°C) respectively. In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is estimated at 93.2°F (34°C).

What is the average humidity in July in Key Largo?

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

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

In Key Largo, Florida, in July, during 20.9 rainfall days, 3.7" (94mm) of precipitation is typically accumulated.

How warm is the water in July in Key Largo?

In Key Largo, Florida, the average seawater temperature in July is 85.6°F (29.8°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 Key Largo?

The average day length in July in Key Largo is 13h and 31min.

What time are sunrise and sunset in July in Key Largo?

On the first day of July in Key Largo, Florida, sunrise is at 6:35 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 8:07 pm EDT.

What month has the most sunshine in Key Largo?

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

How long on average sun shines in July in Key Largo?

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

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

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

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

The average daily maximum UV index in July in Key Largo, Florida, is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.

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"Hg

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

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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%

The 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: 13h and 3min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in July: 11h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

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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

The 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

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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Key Largo, Florida, USA

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