Key West (FL) monthly weather averages

Contents

Average daytime temperature
Average rainfall
Average daily sunshine
Day / night temperatures
Sea temperature
Wind speed
Relative humidity
Quick weather stats
Location map

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Key West

Key West average temperature chart (Celsius)

Key West average temperature chart (Fahrenheit)

Average monthly temperatures in Key West (degrees centigrade and fahrenheit)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
°C	23.4	23.7	25.8	27.5	29.2	30.8	31.6	31.8	31.1	29.1	26.4	24.2
°F	74.2	74.7	78.4	81.6	84.6	87.4	88.9	89.2	88.1	84.4	79.5	75.6

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Key West monthly rainfall chart (inches)

Average monthly rainfall in Key West (mm and inches)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
mm	47	48	40	46	107	144	104	125	166	116	51	45
inches	1.8	1.9	1.6	1.8	4.2	5.7	4.1	4.9	6.5	4.5	2	1.8
Rainy days	6	6	5	4	8	12	12	15	16	11	7	6

Average annual rainfall in Key West: 982.7mm (386.9 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Key West

Average daily sunshine Key West
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Hrs sunshine	8.5	9.1	10.3	11.2	11.3	10.8	10.9	10.3	9.5	8.8	8.2	8

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Key West average minimum / maximum temperatures (Celsius)

Key West average minimum / maximum temperatures (Fahrenheit)

Maximum and minimum daily temperatures in Key West (degrees centigrade and fahrenheit)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Min °C	17	17.4	19.5	21.3	23.3	24.9	25.5	25.5	24.9	23.2	20.5	18
Max °C	23.6	23.9	26	27.7	29.4	30.9	31.8	32	31.3	29.3	26.6	24.4
Min °F	62.6	63.2	67	70.3	73.9	76.8	77.8	77.8	76.8	73.7	68.8	64.4
Max °F	68.5	69.1	72.9	76.1	79.3	82.2	83.5	83.7	82.6	79.2	74.3	70.2

Sea temperature

The graph below shows the average sea temperature.

Key West average sea temperature chart (Fahrenheit)

Average sea temperature around Key West in degrees centigrade and fahrenheit
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
°C	23.9	23.5	23.9	25.2	26.9	28.6	29.5	29.9	29.4	28.2	26.4	25
°F	75	74.3	75.1	77.3	80.3	83.5	85.2	85.8	85	82.7	79.4	77

Wind speed

The graph below shows the average wind speed.

Key West average winspeed by month (km/h)

Key West average winspeed by month (mph)

Average wind speed in Key West (mph and kmh)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
km/h	18	18	19	18	16	14	14	14	14	16	18	17
mph	11	11	12	11	10	9	9	9	9	10	11	11

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Average relative humidity in Key West
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
76%	74%	73%	70%	73%	75%	73%	74%	76%	76%	76%	76%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Key West weather stats

Key West weather statistics
Hottest month:	August	31.8°C 89.2°F
Driest month:	March	40mm 1.6ins
Sunniest month:	April	11.2hrs
Coldest month:	January	23.4°C 74.1°F
Wettest month:	September	166mm 6.5ins
Warmest sea:	August	29.9°C 85.8°F

Map showing location of Key West (24.5557, -81.78259)