1. WeatherSpark.com
  2. United States
  3. Florida
  4. Miami

August Weather in Miami Florida, United States

Daily high temperatures are around 89°F, rarely falling below 86°F or exceeding 92°F. The highest daily average high temperature is 90°F on August 8.

Daily low temperatures are around 78°F, rarely falling below 74°F or exceeding 82°F. The highest daily average low temperature is 79°F on August 7.

For reference, on August 8, the hottest day of the year, temperatures in Miami typically range from 79°F to 90°F, while on January 17, the coldest day of the year, they range from 62°F to 76°F.

Average High and Low Temperature in August in Miami

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in August in Miami

Average Hourly Temperature in August in MiamiAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJulSepwarmwarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Taitung City, Taiwan (8,802 miles away) is the far-away foreign place with temperatures most similar to Miami (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Miami to another city:

Map

The month of August in Miami experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 65% throughout the month.

The clearest day of the month is August 8, with clear, mostly clear, or partly cloudy conditions 37% of the time.

For reference, on July 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 68%, while on March 6, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.

Cloud Cover Categories in August in Miami

Cloud Cover Categories in August in MiamiAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSepAug 136%Aug 136%Aug 3133%Aug 3133%Aug 1137%Aug 1137%Aug 2133%Aug 2133%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Miami, the chance of a wet day over the course of August is increasing, starting the month at 56% and ending it at 61%.

For reference, the year's highest daily chance of a wet day is 62% on August 23, and its lowest chance is 15% on January 31.

Probability of Precipitation in August in Miami

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during August in Miami is increasing, starting the month at 4.6 inches, when it rarely exceeds 7.2 inches or falls below 2.3 inches, and ending the month at 5.6 inches, when it rarely exceeds 8.5 inches or falls below 3.0 inches.

Average Monthly Rainfall in August in Miami

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of August in Miami, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 39 minutes, implying an average daily decrease of 1 minute, 19 seconds, and weekly decrease of 9 minutes, 12 seconds.

The shortest day of the month is August 31, with 12 hours, 40 minutes of daylight and the longest day is August 1, with 13 hours, 19 minutes of daylight.

Hours of Daylight and Twilight in August in Miami

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Miami is 6:47 AM on August 1 and the latest sunrise is 13 minutes later at 7:00 AM on August 31.

The latest sunset is 8:06 PM on August 1 and the earliest sunset is 26 minutes earlier at 7:40 PM on August 31.

Daylight saving time is observed in Miami during 2024, but it neither starts nor ends during August, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:30 AM and sets 13 hours, 45 minutes later, at 8:15 PM, while on December 21, the shortest day of the year, it rises at 7:03 AM and sets 10 hours, 32 minutes later, at 5:35 PM.

Sunrise & Sunset with Twilight in August in Miami

The solar day over the course of August. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in August in Miami

Solar Elevation and Azimuth in August in MiamiAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJulSep00101020202030304040505050606070708000010102020303030404050506060607080
northeastsouthwest
Solar elevation and azimuth over the course of August 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for August 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in August in Miami

Moon Rise, Set & Phases in August in MiamiAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJulSepJul 56:58 PMJul 56:58 PMJul 216:18 AMJul 216:18 AMAug 47:14 AMAug 47:14 AMAug 192:26 PMAug 192:26 PMSep 29:56 PMSep 29:56 PMSep 1710:35 PMSep 1710:35 PM5:57 AM5:57 AM8:29 PM8:29 PM8:02 PM8:02 PM6:40 AM6:40 AM6:48 AM6:48 AM8:34 PM8:34 PM8:09 PM8:09 PM7:44 AM7:44 AM6:32 AM6:32 AM7:39 PM7:39 PM7:16 PM7:16 PM7:35 AM7:35 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Aug 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
8%3:49 AMENE6:23 PMWNW-11:07 AMN240,728 mi
2
3%4:48 AMENE7:13 PMWNW-12:03 PMN242,946 mi
3
1%5:49 AMENE7:56 PMWNW-12:55 PMS245,088 mi
4
0%6:48 AMENE8:34 PMWNW-1:43 PMS247,094 mi
5
2%7:44 AMENE9:07 PMWNW-2:28 PMS248,880 mi
6
5%8:38 AMENE9:37 PMW-3:09 PMS250,343 mi
7
10%9:30 AME10:05 PMW-3:49 PMS251,364 mi
8
17%10:20 AME10:32 PMW-4:27 PMS251,824 mi
9
25%11:11 AME11:00 PMW-5:06 PMS251,615 mi
10
34%12:02 PMESE11:29 PMWSW-5:46 PMS250,658 mi
11
43%12:55 PMESE--6:28 PMS248,918 mi
12
50%-12:02 AMWSW1:51 PMESE7:15 PMS246,419 mi
13
64%-12:40 AMWSW2:49 PMESE8:06 PMS243,256 mi
14
73%-1:23 AMWSW3:50 PMESE9:02 PMS239,603 mi
15
83%-2:14 AMWSW4:50 PMESE10:01 PMS235,715 mi
16
91%-3:13 AMWSW5:47 PMESE11:03 PMS231,910 mi
17
94%-4:18 AMWSW6:40 PMESE--
18
96%-5:27 AMWSW7:27 PMESE12:04 AMS228,538 mi
19
100%-6:36 AMWSW8:09 PMESE1:02 AMS225,922 mi
20
100%-7:44 AMWSW8:47 PME1:56 AMS224,307 mi
21
97%-8:51 AMW9:23 PME2:48 AMS223,816 mi
22
91%-9:56 AMW9:59 PME3:38 AMS224,436 mi
23
82%-11:01 AMWNW10:36 PMENE4:27 AMS226,031 mi
24
72%-12:06 PMWNW11:16 PMENE5:18 AMS228,378 mi
25
61%-1:12 PMWNW-6:11 AMS231,212 mi
26
50%12:00 AMENE2:18 PMWNW-7:06 AMS234,278 mi
27
38%12:49 AMENE3:21 PMWNW-8:04 AMN237,357 mi
28
28%1:44 AMENE4:19 PMWNW-9:02 AMN240,289 mi
29
19%2:42 AMENE5:11 PMWNW-9:58 AMN242,972 mi
30
11%3:42 AMENE5:56 PMWNW-10:51 AMS245,355 mi
31
6%4:41 AMENE6:35 PMWNW-11:40 AMS247,417 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Miami is essentially constant during August, remaining around 100% throughout.

For reference, on July 15, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 25, the least muggy day of the year, there are muggy conditions 30% of the time.

Humidity Comfort Levels in August in Miami

Humidity Comfort Levels in August in MiamiAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JulSepAug 1100%Aug 1100%Aug 31100%Aug 31100%Aug 11100%Aug 11100%Aug 21100%Aug 21100%miserablemiserableoppressiveoppressivemuggymuggy
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Miami is gradually increasing during August, increasing from 8.2 miles per hour to 8.9 miles per hour over the course of the month.

For reference, on March 13, the windiest day of the year, the daily average wind speed is 12.8 miles per hour, while on August 8, the calmest day of the year, the daily average wind speed is 8.1 miles per hour.

The lowest daily average wind speed during August is 8.1 miles per hour on August 8.

Average Wind Speed in August in Miami

Average Wind Speed in August in MiamiAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphJulSepAug 88.1 mphAug 88.1 mphAug 318.9 mphAug 318.9 mphAug 218.5 mphAug 218.5 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Miami throughout August is predominantly from the east, with a peak proportion of 60% on August 31.

Wind Direction in August in Miami

Wind Direction in August in MiamiAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JulSepsoutheastwestnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Miami is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Miami is essentially constant during August, remaining around 85°F throughout.

The highest average surface water temperature during August is 85°F on August 13.

Average Water Temperature in August in Miami

Average Water Temperature in August in MiamiAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313182.0°F82.0°F82.5°F82.5°F83.0°F83.0°F83.5°F83.5°F84.0°F84.0°F84.5°F84.5°F85.0°F85.0°F85.5°F85.5°F86.0°F86.0°F86.5°F86.5°F87.0°F87.0°FJulSepAug 1385°FAug 1385°FAug 185°FAug 185°FAug 3185°FAug 3185°FAug 2185°FAug 2185°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Miami are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in August in Miami

Time Spent in Various Temperature Bands and the Growing Season in August in MiamiAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSep100%Aug 16100%Aug 16100%Jul 2100%Jul 2warmhotcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Miami are very rapidly increasing during August, increasing by 976°F, from 5,447°F to 6,422°F, over the course of the month.

Growing Degree Days in August in Miami

Growing Degree Days in August in MiamiAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031315,200°F5,200°F5,400°F5,400°F5,600°F5,600°F5,800°F5,800°F6,000°F6,000°F6,200°F6,200°F6,400°F6,400°F6,600°F6,600°FJulSepAug 15,447°FAug 15,447°FAug 316,422°FAug 316,422°FAug 115,774°FAug 115,774°FAug 216,098°FAug 216,098°F
The average growing degree days accumulated over the course of August, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Miami is essentially constant during August, remaining within 0.2 kWh of 4.7 kWh throughout.

Average Daily Incident Shortwave Solar Energy in August in Miami

Average Daily Incident Shortwave Solar Energy in August in MiamiAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhJulSepAug 14.8 kWhAug 14.8 kWhAug 314.5 kWhAug 314.5 kWhAug 114.8 kWhAug 114.8 kWhAug 214.6 kWhAug 214.6 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Miami are 25.774 deg latitude, -80.194 deg longitude, and 7 ft elevation.

The topography within 2 miles of Miami is essentially flat, with a maximum elevation change of 36 feet and an average elevation above sea level of 5 feet. Within 10 miles is also essentially flat (36 feet). Within 50 miles is also essentially flat (82 feet).

The area within 2 miles of Miami is covered by artificial surfaces (64%) and water (36%), within 10 miles by artificial surfaces (49%) and water (48%), and within 50 miles by water (53%) and herbaceous vegetation (31%).

This report illustrates the typical weather in Miami, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Miami.

For each station, the records are corrected for the elevation difference between that station and Miami according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Miami is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Miami and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Miami and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.