Islamorada Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is at Islamorada, in the Florida Keys during each month of the year.

The average high and low temperatures are listed below monthly and annually for Upper Matecumbe Key and its neighbors, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month at Islamorada, scroll down farther. There are also monthly and yearly counts of days with cool weather.

All the numbers are averages, based on climate data gathered from 1981 to 2010.

Average Islamorada temperatures
High °F Low °F   High °C Low °C
75 62 January 24 17
77 65 February 25 18
78 67 March 26 19
81 71 April 27 22
84 75 May 29 24
87 77 June 31 25
89 78 July 32 26
89 79 August 32 26
88 77 September 31 25
85 75 October 30 24
80 71 November 27 22
77 66 December 25 19
83 72 Year 28 22

Days of Hot Weather in Islamorada

Islamorada enjoys pleasantly hot temperatures throughout much of the year. Most days have highs in the 80s Fahrenheit. Thermometers typically reach into the 90s just 21 days annually, scattered from June to October. It normally doesn't get any hotter than 100 °F (38 °C) at this cluster of six islands in the midst of the Florida Keys.

Days per month in Islamorada of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 26 5 0
February 26 5 0
March 26 10 0
April 30 21 0
May 31 28 0
June 30 30 3
July 31 31 7
August 31 31 6
September 30 30 3
October 31 29 2
November 30 18 0
December 30 7 0
Year 355 246 21

How Often Islamorada Has Cool Temperatures

Cold temperatures simply don't happen at Islamorada. Even winter nights enjoy warm weather, with just five on average seeing lows of 50 °F or less. Only once every few years does the thermometer touch 40 °F (4 °C).

Days per month on average in Islamorada when the minimum temperature drops to 60 or 50 °F or lower
  50 °F
10 °C
60 °F
16 °C
January 3 13
February 1 6
March 0 4
April 0 1
May 0 0
June 0 0
July 0 0
August 0 0
September 0 0
October 0 0
November 0 1
December 1 8
Year 5 33
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Florida Temperatures
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