Average August Temperature in Key West by Year

This page contains a list of the average monthly high and low temperatures in Key West, Florida for the month of August each year between 1948 and 2023. It is based on NOAA data.

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What Was the Hottest August Ever in Key West?

2007 was the warmest August in the history of Key West, Florida. The average daily high temperature was 92.1 °F, and the average low was 82.8 °F.

What Was the Coldest August Ever in Key West?

1977 was the coolest August in the history of Key West, Florida. The average daily high temperature was 87.7 °F, and the average low was 78.3 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	2	91.8	83.0
2022	25	89.2	80.7
2021	35	89.0	80.5
2020	3	91.2	83.1
2019	7	90.5	81.5
2018	11	90.7	80.7
2017	10	89.6	81.9
2016	41	89.5	79.6
2015	9	90.4	81.2
2014	4	90.6	82.2
2013	65	87.6	79.2
2012	66	87.4	79.4
2011	13	90.2	80.9
2010	21	89.6	80.6
2009	5	91.1	81.4
2008	32	89.7	80.0
2007	1	92.1	82.8
2006	38	89.3	79.9
2005	8	91.0	80.7
2004	40	89.7	79.5
2003	6	90.7	81.3
2002	43	89.2	79.7
2001	45	89.3	79.5
2000	70	88.6	77.8
1999	54	89.1	78.9
1998	37	90.0	79.2
1997	46	89.8	79.0
1996	58	88.9	78.5
1995	19	90.8	79.8
1994	64	89.0	77.9
1993	18	90.9	79.7
1992	23	90.5	79.7
1991	14	91.4	79.5
1990	12	92.0	79.1
1989	15	91.1	79.6
1988	48	89.4	79.0
1987	16	90.7	79.9
1986	59	88.7	78.7
1985	53	89.2	78.8
1984	62	87.7	79.4
1983	57	89.0	78.8
1982	56	89.1	78.7
1981	55	88.4	79.5
1980	27	89.6	80.3
1979	20	90.2	80.2
1978	17	90.3	80.3
1977	72	87.7	78.3
1976	52	88.9	79.1
1975	42	89.4	79.6
1974	49	88.5	79.9
1973	71	88.1	78.1
1972	44	88.7	80.1
1971	69	88.0	78.4
1970	67	87.7	78.9
1969	30	89.0	80.7
1968	50	89.0	79.1
1967	47	88.8	79.8
1966	51	88.8	79.3
1965	22	89.5	80.6
1964	29	89.4	80.4
1963	26	90.4	79.5
1962	24	90.7	79.3
1961	28	90.1	79.7
1960	68	88.7	77.9
1959	60	88.6	78.6
1958	34	90.0	79.6
1957	36	90.7	78.7
1952	33	91.7	77.9
1951	31	91.3	78.5
1950	63	89.7	77.3
1949	61	89.4	77.7
1948	39	90.0	79.2

Weather Station Details

Years	Station	Coordinates
1948–2024	Key West International Airport	location