Heat Index and Dewpoint Climatology for Miami, FL

The data shown on this page are from the automated METAR reports from Miami International Airport in Miami-Dade County, Florida (KMIA). These data span 1948-present and the station has been at the same location during this time: the southwest corner of the airport grounds at an elevation of 29 feet above sea level.

The reported air and dew point temperature values are used to calculate the relative humidity and in turn, the heat index. The heat index is only calculated when the air temperature is above 80°F.

The averages are calculated using the 1991-2020 period, and the records span the entire 1948-present period. None of the values shown here represent official climate normals or records, and while some quality control was performed on the data, errors could still exist.

An average summertime diurnal cycle of the heat index, air temperature, and dew point temperature from 1991-2020 as well as from 1951-1980 is available here.

Heat Index Threshold Consecutive Days (1st) Ending Date Consecutive Days (2nd) Ending Date Consecutive Days (3rd) Ending Date
100 31 20200905 26 20170730 21 20110811
101 20 20200711 17 20170730 16 20050824
102 20 20200711 13 20050822 11 20110811
103 20 20200711 13 20050822 10 20200905
104 7 20170902 6 19810720 5 20200831
105 5 20170908 4 20170816 3 20200625
106 2 20190625 2 20170905 2 20160810
107 2 20170905 2 20090718 2 20050830
108 1 20150825 1 20100606 1 20090622
109 1 20150825 1 20100606 1 20090622
110 1 20090622 1 19950626 - -
This table shows the record number of consecutive days that the heat index was at or above a given threshold, as well as the date that the streak ended. For historical context, the second and third highest number of consecutive days is also provided. If there is a tie, the most recent date will be listed first, next most recent date will be listed second, etc.


[JUMP TO MONTHLY HEAT INDEX DATA]
[JUMP TO DAILY DEWPOINT DATA]
[JUMP TO MONTHLY DEWPOINT DATA]
[JUMP TO DAILY TEMPERATURE DATA]
[JUMP TO MONTHLY TEMPERATURE DATA]



[JUMP TO DAILY HEAT INDEX DATA]
[JUMP TO DAILY DEWPOINT DATA]
[JUMP TO MONTHLY DEWPOINT DATA]
[JUMP TO DAILY TEMPERATURE DATA]
[JUMP TO MONTHLY TEMPERATURE DATA]



[JUMP TO DAILY HEAT INDEX DATA]
[JUMP TO MONTHLY HEAT INDEX DATA]
[JUMP TO MONTHLY DEWPOINT DATA]
[JUMP TO DAILY TEMPERATURE DATA]
[JUMP TO MONTHLY TEMPERATURE DATA]