Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
July and August are the warmest months in Jacksonville, with an average high-temperature of 91.4°F.Heat index
The heat index for August is evaluated at a blazing hot 114.8°F. Precaution: Heat cramps along with heat exhaustion are possible. Heatstroke is a serious risk with continued exertion.Keep in mind the heat index values are meant for areas in shade and with light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
The average relative humidity in August is 75%.Rainfall
The month with the most rainfall is August, when the rain falls for 23.3 days and typically aggregates up to 3.66" of precipitation.Snowfall
In Jacksonville, snow does not fall in January through November.Ocean temperature
August is the month with the warmest seawater in Jacksonville, with an average ocean temperature of 83.5°F.Note: Temperatures between 77°F and 84.2°F are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.
Daylight
In August, the average length of the day in Jacksonville is 13h and 13min.On the first day of the month, sunrise is at 6:45 am and sunset at 8:20 pm. On the last day of August, in Jacksonville, sunrise is at 7:02 am and sunset at 7:51 pm EDT.
Sunshine
In August, the average sunshine is 10.4h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 7 during August translates into the following directions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Heads up! UV intensity is amplified by reflections from water and sand.
FAQ
What is the hottest time of year in Jacksonville?
How hot does it get in Jacksonville in August?
What is the average humidity in August in Jacksonville?
What is the rainiest month in Jacksonville?
How many days does it rain in August in Jacksonville?
When it does not snow in Jacksonville?
What is the month with the warmest ocean in Jacksonville?
What is the water temperature in August in Jacksonville?
How many hours of daylight does Jacksonville have in August?
When are sunrise and sunset in August in Jacksonville?
How long on average sun shines in August in Jacksonville?
When is the highest UV index in Jacksonville?
How high is the UV index in August in Jacksonville?
Average temperature in August
Jacksonville, FL
- Average high temperature in August: 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 August: 76.6°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).
Average pressure in August
Jacksonville, FL
- Average pressure in August: 29.98"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).
Average wind speed in August
Jacksonville, FL
- Average wind speed in August: 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).
Average humidity in August
Jacksonville, FL
- Average humidity in August: 75%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is March (69%).
Average rainfall in August
Jacksonville, FL
- Average rainfall in August: 3.66"
The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in August
Jacksonville, FL
- Average rainfall days in August: 23.3 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).
Average snowfall days in August
Jacksonville, FL
- Average snowfall days in August: 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).
Average sea temperature in August
Jacksonville, FL
- Average sea temperature in August: 83.5°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).
Average daylight in August /
Average sunshine in August
Jacksonville, FL
- Average daylight in August: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in August: 10h and 2min
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).
Average sunshine days in August
Jacksonville, FL
- Average sunshine days in August: 6.3 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).
Average UV index in August
Jacksonville, FL
- Average UV index in August: 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).
Average cloud cover in August
Jacksonville, FL
- Average cloud cover in August: 30
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is May (Cloud cover 27).
Average visibility in August
Jacksonville, FL
- Average visibility in August: 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).
Jacksonville, Florida, USA
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