July weather forecast
Jacksonville, FL

Water geysers at the fountain of Jacksonville in Florida, USA, with the cityscape
Water geysers at the fountain of Jacksonville in Florida, USA, with the cityscape

Weather in July

July, the same as June, in Jacksonville, Florida, is a hot summer month, with an average temperature varying between 75.9°F (24.4°C) and 91.4°F (33°C).

Temperature

July and August, with an average high-temperature of 91.4°F (33°C), are the warmest months.

Heat index

The average heat index in July is appraised at a burning hot 113°F (45°C). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. 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 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, differences in body mass, height, and shape, metabolic differences, and wind affect individual temperature impact. 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 particularly important for children. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. 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. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in July in Jacksonville is 74%.

Rainfall

In Jacksonville, Florida, during July, the rain falls for 22.1 days and regularly aggregates up to 3.23" (82mm) of precipitation. In Jacksonville, during the entire year, the rain falls for 172.6 days and collects up to 25.35" (644mm) of precipitation.

Snowfall

January through November are months without snowfall in Jacksonville.

Ocean temperature

In Jacksonville, in July, the average water temperature is 82°F (27.8°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 July, the average length of the day in Jacksonville is 13h and 53min.
On the first day of the month, sunrise is at 6:28 am and sunset at 8:32 pm. On the last day of July, sunrise is at 6:44 am and sunset at 8:21 pm EDT.

Sunshine

With an average of 10.9h of sunshine, July has the most sunshine of the year.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 7 in July interpret into the following advice:
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. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What are the warmest months in Jacksonville?

Warmest months in Jacksonville, Florida, are July and August, with an average high-temperature of 91.4°F (33°C).

What is the temperature in July in Jacksonville?

In Jacksonville, Florida, in July, the average high-temperature is 91.4°F (33°C), and the average low-temperature is 75.9°F (24.4°C). in July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is appraised at 113°F (45°C).

What is the average humidity in July in Jacksonville?

In Jacksonville, the average relative humidity in July is 74%.

How much does it rain in Jacksonville in July?

In Jacksonville, in July, during 22.1 rainfall days, 3.23" (82mm) of precipitation is typically accumulated.

When it does not snow in Jacksonville?

In Jacksonville, Florida, snow does not fall in January through November.

What is the ocean temperature in July in Jacksonville?

In July, the average ocean temperature in Jacksonville is 82°F (27.8°C). 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.

How many hours of daylight does Jacksonville have in July?

In Jacksonville, the average day length in July is 13h and 53min.

What time are sunrise and sunset in July in Jacksonville?

In July, on the first day of the month, sunrise is at 6:28 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 8:21 pm EDT.

What month has the most sunshine in Jacksonville?

July has the most sunshine of the year in Jacksonville, with an average of 10.9h of sunshine.

How long on average sun shines in July in Jacksonville?

In July, the average sunshine duration is 10.9h.

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

The months with the highest UV index in Jacksonville are May through August, with an average maximum UV index of 7.

What is the UV index reading in July in Jacksonville?

The average daily maximum UV index in July in Jacksonville 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 sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Jacksonville, FL

Average temperature in July - Jacksonville, FL
  • Average high temperature in July: 91.4°F

The warmest months (with the highest average high temperature) are July and August (91.4°F).
The month with the lowest average high temperature is January (63.1°F).

  • Average low temperature in July: 75.9°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (47.8°F).

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Average pressure in July
Jacksonville, FL

Average pressure in July - Jacksonville, FL
  • Average pressure in July: 30.01"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed in July
Jacksonville, FL

Average wind speed in July - Jacksonville, FL
  • Average wind speed in July: 5.2mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in July
Jacksonville, FL

Average humidity in July - Jacksonville, FL
  • Average humidity in July: 74%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is March (69%).

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Average rainfall in July
Jacksonville, FL

Average rainfall in July - Jacksonville, FL
  • Average rainfall in July: 3.23"

The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in July
Jacksonville, FL

Average rainfall days in July - Jacksonville, FL
  • Average rainfall days in July: 22.1 days

The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is November (9 days).

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Average snowfall days in July
Jacksonville, FL

Average snowfall days in July - Jacksonville, FL
  • Average snowfall days in July: 0 days

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

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Average sea temperature in July
Jacksonville, FL

Average sea temperature in July - Jacksonville, FL
  • Average sea temperature in July: 82°F

The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (60.4°F).

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Average daylight in July /
Average sunshine in July
Jacksonville, FL

Average daylight in July / Average sunshine in July - Jacksonville, FL
  • Average daylight in July: 13h and 53min

The month with the longest days is June (Average daylight: 14h and 4min).
The month with the shortest days is December (Average daylight: 10h and 14min).

  • Average sunshine in July: 10h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average sunshine days in July
Jacksonville, FL

Average sunshine days in July - Jacksonville, FL
  • Average sunshine days in July: 6.8 days

The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is August (6.3 days).

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Average UV index in July
Jacksonville, FL

Average UV index in July - Jacksonville, FL
  • Average UV index in July: 7

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 4).

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Average cloud cover in July
Jacksonville, FL

Average cloud cover in July - Jacksonville, FL
  • Average cloud cover in July: 28

The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is May (Cloud cover 27).

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Average visibility in July
Jacksonville, FL

Average visibility in July - Jacksonville, 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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