Jacksonville Weather in August
Jacksonville in August averages 33°C (91°F) during the day and 23°C (73°F) at night. This is the wettest month of the year.
Rainfall in Jacksonville in August
During this month, the rain comes down heavily. A poncho is essential for staying dry. On average, there are about 19 days with rain during this month, averaging 193 mm (7.6 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Jacksonville in August
Daytime highs in Jacksonville in August reach 33°C (91°F), with nights around 23°C (73°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights are warm at 23°C (73°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Jacksonville in August
With approximately 261 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in Jacksonville in August
Wind speeds average 3 m/s (6 knots) during August. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.
Average water temperature in August
The water is 28°C (82°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.August in Jacksonville can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Jacksonville's climate page.
Jacksonville Temperature in August
Min Temperature
23°C (73°F)
Max Temperature
33°C (91°F)
Water Temperature
28°C (82°F)
Chance of Rain
62%
Precipitation
193 mm (7.6 in)
Rainy days
19 days
Humidity
81%
Windspeed
3 m/s (6 knots)
Sunshine
261 hours
Percentage Sunshine
64%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Jacksonville typically stay consistent throughout August, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Jacksonville in August
Browse day-by-day weather records for Jacksonville spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jacksonville historical weather extremes in August
The extremes listed below come from historical weather data collected in Jacksonville from 1976 through 2025.
- Jacksonville recorded its highest August temperature of 39°C (102°F) on August 1, 1999.
- Jacksonville experienced its chilliest August day on August 29, 1986, reaching only 24°C (75°F).
- The lowest overnight temperature recorded in August was 17°C (63°F) (August 9, 2002).
Best Places in the United States of America in August
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in August →
perfect weather
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tolerable
unpleasant
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What to Wear in Jacksonville in August
Warm temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! With water temperatures around 28°C (82°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Jacksonville in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Jacksonville's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Jacksonville climate overview or explore weather in the United States of America.
