June weather forecast and climate
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 June

June, the first month of the summer, in Jacksonville, is a tropical month, with average temperature ranging between min 73.9°F (23.3°C) and max 90.1°F (32.3°C).

Temperature

In June, the average high-temperature is relatively the same as in May - a hot 90.1°F (32.3°C). The average low-temperature, in June, is 73.9°F (23.3°C).

Heat index

In June, the average heat index is calculated to a scorching 108.5°F (42.5°C). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged 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', 'apparent temperature', 'real feel', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, wind, metabolic differences). 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. 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 June, the average relative humidity in Jacksonville is 73%.

Rainfall

In Jacksonville, during June, the rain falls for 18.5 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, there are 172.6 rainfall days, and 25.35" (644mm) of precipitation is accumulated.

Snowfall

January through November are months without snowfall in Jacksonville.

Ocean temperature

In June, the average ocean temperature is 79.9°F (26.6°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

The month with the longest days is June, with an average of 14.1h of daylight.

Sunshine

In June, the average sunshine in Jacksonville is 10.8h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in Jacksonville. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 7 transform into the following instructions:
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. 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 June in Jacksonville?

In June, in Jacksonville, the average high-temperature is 90.1°F (32.3°C), and the average low-temperature is 73.9°F (23.3°C). The average heat index (a.k.a. 'feels like', 'real feel'), that factores the actual air temperature with the relative humidity, in June is evaluated at 108.5°F (42.5°C).

What is the average humidity in June in Jacksonville?

In June, the average relative humidity in Jacksonville is 73%.

How much does it rain in Jacksonville in June?

In Jacksonville, during June, the rain falls for 18.5 days and regularly aggregates up to 2.8" (71mm) of precipitation.

When it does not snow in Jacksonville?

January through November are months without snowfall in Jacksonville, Florida.

What is the ocean temperature in June in Jacksonville?

In June, the average ocean temperature in Jacksonville is 79.9°F (26.6°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.

When are the longest days in Jacksonville?

The month with the longest days in Jacksonville, Florida, is June, with an average of 14.1h of daylight.

How many hours of daylight does Jacksonville have in June?

In Jacksonville, the average length of the day in June is 14.1h.

How long on average sun shines in June in Jacksonville?

In June, the average sunshine in Jacksonville, Florida, is 10.8h.

When is the highest UV index in Jacksonville?

Months with the highest UV index are May through August, with an average maximum UV index of 7.

How high is the UV index in June in Jacksonville?

The average daily maximum UV index in June in Jacksonville is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to the UV radiation.

Average temperature in June
Jacksonville, FL

Average temperature in June - Jacksonville, FL
  • Average high temperature in June: 90.1°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 June: 73.9°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 June
Jacksonville, FL

Average pressure in June - Jacksonville, FL
  • Average pressure in June: 29.98"

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

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Average wind speed in June
Jacksonville, FL

Average wind speed in June - Jacksonville, FL
  • Average wind speed in June: 5.5mph

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 June
Jacksonville, FL

Average humidity in June - Jacksonville, FL
  • Average humidity in June: 73%

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 June
Jacksonville, FL

Average rainfall in June - Jacksonville, FL
  • Average rainfall in June: 2.8"

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 June
Jacksonville, FL

Average rainfall days in June - Jacksonville, FL
  • Average rainfall days in June: 18.5 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 June
Jacksonville, FL

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

The month with the highest number of snowfall days is December (0.1 days).
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 June
Jacksonville, FL

Average sea temperature in June - Jacksonville, FL
  • Average sea temperature in June: 79.9°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 June /
Average sunshine in June
Jacksonville, FL

Average daylight in June / Average sunshine in June - Jacksonville, FL
  • Average daylight in June: 14.1h

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in June: 10.8h

The month with the most sunshine is July (Average sunshine: 10.9h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in June
Jacksonville, FL

Average sunshine days in June - Jacksonville, FL
  • Average sunshine days in June: 9 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 June
Jacksonville, FL

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

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 June
Jacksonville, FL

Average cloud cover in June - Jacksonville, FL
  • Average cloud cover in June: 29

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 June
Jacksonville, FL

Average visibility in June - Jacksonville, FL
  • Average visibility in June: 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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