Jacksonville weather in August: Jacksonville, Florida: normal highs, lows, rain and records for August
Jacksonville in August has a normal high of 91°F and a normal low of 73°F, a daily mean of 82°F, falling from 92°F on the 1st to 89°F by the 31st. Measurable precipitation falls on 15 days in a normal August, 6.88 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 33°C and low of 23°C, 175 mm of precipitation in August.
- NOAA stationJacksonville International Airport
- Station IDUSW00013889
- Location30.48°N 81.70°W
- Elevation33 ft (10 m)
- From the center11 miles
- Population1,009,833
- Jan 66° 43°
- Feb 69° 46°
- Mar 74° 51°
- Apr 80° 56°
- May 86° 64°
- Jun 90° 71°
- Jul 92° 73°
- Aug 91° 73°
- Sep 87° 71°
- Oct 81° 62°
- Nov 73° 51°
- Dec 68° 46°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Jacksonville in August?
The normal high is 91°F and the normal low 73°F, for a daily mean of 82.1°F. August is 0.4°F cooler than July and 3.3°F warmer than September. August is the 2nd warmest month of the year in Jacksonville and the 3rd wettest. Across the month the normal high falls 3°F, from 92°F on August 1 to 89°F on August 31. From one year to the next August's mean temperature typically moves about 1.1°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 81°F and 83°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 48%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 92°F | 74°F | 48% | 33% |
| August 8 | 92°F | 74°F | 48% | 33% |
| August 15 | 91°F | 74°F | 48% | 33% |
| August 22 | 90°F | 73°F | 48% | 33% |
| August 31 | 89°F | 73°F | 46% | 32% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 92°F | 74°F | 48% | 33% | 13 h 40 min |
| August 2 | 92°F | 74°F | 48% | 33% | 13 h 40 min |
| August 3 | 92°F | 74°F | 48% | 33% | 13 h 30 min |
| August 4 | 92°F | 74°F | 48% | 33% | 13 h 30 min |
| August 5 | 92°F | 74°F | 48% | 33% | 13 h 30 min |
| August 6 | 92°F | 74°F | 48% | 33% | 13 h 30 min |
| August 7 | 92°F | 74°F | 48% | 33% | 13 h 30 min |
| August 8 | 92°F | 74°F | 48% | 33% | 13 h 30 min |
| August 9 | 91°F | 74°F | 48% | 33% | 13 h 30 min |
| August 10 | 91°F | 74°F | 48% | 33% | 13 h 20 min |
| August 11 | 91°F | 74°F | 48% | 33% | 13 h 20 min |
| August 12 | 91°F | 74°F | 48% | 33% | 13 h 20 min |
| August 13 | 91°F | 74°F | 48% | 33% | 13 h 20 min |
| August 14 | 91°F | 74°F | 48% | 33% | 13 h 20 min |
| August 15 | 91°F | 74°F | 48% | 33% | 13 h 20 min |
| August 16 | 91°F | 74°F | 48% | 33% | 13 h 20 min |
| August 17 | 91°F | 74°F | 48% | 33% | 13 h 10 min |
| August 18 | 91°F | 74°F | 48% | 33% | 13 h 10 min |
| August 19 | 91°F | 73°F | 48% | 33% | 13 h 10 min |
| August 20 | 91°F | 73°F | 48% | 33% | 13 h 10 min |
| August 21 | 90°F | 73°F | 48% | 33% | 13 h 10 min |
| August 22 | 90°F | 73°F | 48% | 33% | 13 h 10 min |
| August 23 | 90°F | 73°F | 48% | 33% | 13 h |
| August 24 | 90°F | 73°F | 48% | 33% | 13 h |
| August 25 | 90°F | 73°F | 47% | 33% | 13 h |
| August 26 | 90°F | 73°F | 47% | 33% | 13 h |
| August 27 | 90°F | 73°F | 47% | 32% | 13 h |
| August 28 | 90°F | 73°F | 47% | 32% | 13 h |
| August 29 | 90°F | 73°F | 47% | 32% | 12 h 50 min |
| August 30 | 90°F | 73°F | 47% | 32% | 12 h 50 min |
| August 31 | 89°F | 73°F | 46% | 32% | 12 h 50 min |
- Normal high
- 91°FAugust average
- Normal low
- 73°FAugust average
- Precipitation
- 6.88 inmonth total
- Days with precipitation
- 150.01 inch or more
- Days at 90°F or more
- 20
- Daylight
- 13 h 40 min to 12 h 50 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 31
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013889; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Jacksonville in August?
On a given August day the chance of 0.01 inch or more is 48% on average, highest around August 15 (48%). In all, 6.88 in falls on 15 days of a normal August, 2 of them with an inch or more.
In a normal August in Jacksonville, 20 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013889.
How humid and windy is Jacksonville in August?
At 3 p.m. the normal temperature is 86°F with 64% relative humidity and a dew point of 72°F; at 6 a.m. it is 73°F with 95% humidity. The wind averages 6.1 mph, most often from the east-northeast in the afternoon. A dew point of 65°F or more feels muggy to most people.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 73°F | 72°F | 95% | 3.2 mph | 35% |
| 9 a.m. | 81°F | 74°F | 78% | 6.6 mph | – |
| noon | 86°F | 73°F | 64% | 9.1 mph | – |
| 3 p.m. | 86°F | 72°F | 64% | 10.5 mph | – |
| 6 p.m. | 82°F | 73°F | 74% | 8.6 mph | – |
| 9 p.m. | 77°F | 73°F | 87% | 4.7 mph | 40% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013889. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for August in Jacksonville?
The warmest August temperature on Jacksonville's official record (since 1871) is 102°F, on August 1, 1999; the coldest is 63°F, on August 29, 1984. The wettest August brought 16.83 in (2008).
The August mean against the 1991-2020 normal of 82.1°F: 2021 81.9°F (−0.2), 2022 81.6°F (−0.5), 2023 84.5°F (+2.4), 2024 83.1°F (+1.0), 2025 83.2°F (+1.1), 2026 83.0°F (+0.9). 4 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 81.9°F | −0.2°F | 7.48 in |
| 2022 | 81.6°F | −0.5°F | 10.40 in |
| 2023 | 84.5°F | +2.4°F | 4.98 in |
| 2024 | 83.1°F | +1.0°F | 12.44 in |
| 2025 | 83.2°F | +1.1°F | 6.08 in |
| 2026 | 83.0°F | +0.9°F | 9.03 in |
Source: records: ACIS, NWS threaded record JAXthr; recent months: ACIS, station USW00013889. Records and recent months use complete months only.
How does August in Jacksonville compare across Florida?
Across the 106 places PlainClimate covers in Florida, August normal highs run from 88°F in Palm Coast to 94°F in Plant City; Jacksonville's is 91°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Jacksonville in July92°F by day, 73°F at night
- Jacksonville in September87°F by day, 71°F at night
- Jacksonville through the yearEvery month, frost dates, records and recent years
- Florida in AugustThe statewide normal and the warmest and coolest places
- Plant City: Florida's warmest Augustnormal high 94°F