Measurements:
°C
°F
Key Largo
80°F
N 6 mph
Feels like: 86°F
Precip: 0%
World Resorts USA Key Largo Weather September Weather in Key Largo

Key Largo Weather: September

Average Day Temperature: 88.3°F
Average Night Temperature: 86.8°F
Sea Water Temperature: 90.7°F
Number of Sunny Days: 4 days
Sunshine Hours: 11.9 - 12.6 hours
Number of Rainy Days: 3 days
Precipitation Totals: 2.5 in

Air Temperature in September, °F

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
15
30
45
60
75
90
105
120
Day Temperature   
Night Temperature

The highest day temperature in September 2024 was 92°F. The lowest night temperature was 85°F. The average values for day and night temperatures during September were 89.4°F и 88.4°F respectivly.

Key Largo Water Sea Temperature in September, °F

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
82
85
88
91
94
97

The average sea surface temperature in September 2024 for Key Largo was 91.3°F. The maximum and minimum values were 88.4°F and 93.0°F respectively.

Sunny, Cloudy and Gloomy days
Sunny days
Cloudy days
Gloomy days
13%
50%
37%

Most of the days in September are cloudy but you can also expect sunny or gloomy days.

Precipitation Totals in September, in

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
0.4
0.9
1.3
1.7
2.1
2.6
3.0

Precipitation total in September for Key Largo is 2.5 in. It makes september the most rainy month of the year.

Wind Speed in September, mph
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
2.4
4.9
7.3
9.7
12.2
14.6
17.0

The average wind speed in September is 9.9 mph. It makes September the most windless month of the year for Key Largo.

Average Sunny Hours Per Day
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.3
2.6
3.9
5.2
6.5
7.8
9.1

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Key Largo in September is 6.1 hours.

Best Time to Visit Key Largo
The most sunny months:
March 11 days
January 10 days
April 10 days
The most warm months:
July 89.0 °F
August 88.8 °F
September 88.3 °F
Warmest sea temperature:
August 91.5 °F
July 91.4 °F
September 90.7 °F
The most cold months:
January 73.1 °F
December 75.0 °F
February 76.1 °F
The most rainy months:
June 4 days
July 3 days
September 3 days
The most windy months:
November 14 mph
March 14 mph
October 13 mph

Key Largo on the Weather Map

USA Resorts:
NAME
Boston +40
Chicago +48
Hawaii +78
Honolulu +78
Houston +86
Las Vegas +100
Los Angeles +88
Miami +80
New York +46
Orlando +88
San Diego +74
San Francisco +56
Sarasota +80
Tampa +86
Washington +46
24 Hours Weather Forecast
Key Largo
Local time: 17:39
11 apr, friday
1800 80°F
N
6 mph
2100 78°F
E
9 mph
12 apr, saturday
0000 76°F
SE
14 mph
0300 72°F
SE
15 mph
0600 70°F
SE
12 mph
0900 70°F
SE
7 mph
1200 74°F
NE
7 mph
1500 78°F
E
17 mph