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
In Jacksonville, the warmest period comes during July and August, when the average high-temperature touches 91.4°F (33°C).Heat index
The heat index for August is evaluated at a burning hot 114.8°F (46°C). Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. 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 relevant to babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In Jacksonville, the average relative humidity in August is 75%.Rainfall
August is the month with the most rainfall. Rain falls for 23.3 days and accumulates 3.66" (93mm) of precipitation.Snowfall
January through November are months without snowfall.Ocean temperature
The month with the warmest seawater is August, with an average ocean temperature of 83.5°F (28.6°C).Note: Between the temperatures of 77°F (25°C) and 84.2°F (29°C), water is considered very warm, providing pleasure in water activities without discomfort over lengthy periods.
Daylight
The average length of the day in August 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, sunrise is at 7:03 am and sunset at 7:50 pm EDT.
Sunshine
In Jacksonville, the average sunshine in August is 10.4h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 7 during August leads to these advisories:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Watch out! Sand and water enhance the UV exposure you receive.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the hottest in Jacksonville?
How hot is it in August?
What is the average humidity in August?
What is the wettest month?
How many days does it rain in August?
When it does not snow?
What is the month with the warmest ocean?
What is the ocean temperature in August?
What is the average length of the day in August?
What time are sunrise and sunset in August?
How long on average sun shines in August?
When is the highest UV index?
How high is the UV index in August?
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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