Measurements:
°C
°F
CURRENT WEATHER
11:07
Key Largo
90°F
W 11 mph
Feels like: 98°F
Precip: 5%
World Resorts USA Key Largo Weather

14 Day Weather Forecast

09.15
tue
DAY
90°F
W 11 mph
precip
5%
NIGHT
90°F
W 20 mph
precip
20%
09.16
wed
DAY
88°F
SW 16 mph
precip
19%
NIGHT
88°F
W 19 mph
precip
16%
09.17
thu
DAY
88°F
W 14 mph
precip
26%
NIGHT
88°F
W 16 mph
precip
11%
09.18
fri
DAY
88°F
W 9 mph
precip
17%
NIGHT
88°F
W 13 mph
precip
13%
09.19
sat
DAY
88°F
NW 7 mph
precip
8%
NIGHT
88°F
W 11 mph
precip
52%
09.20
sun
DAY
88°F
N 5 mph
precip
11%
NIGHT
88°F
N 7 mph
precip
47%
09.21
mon
DAY
88°F
NE 6 mph
precip
14%
NIGHT
88°F
NW 6 mph
precip
9%
09.22
tue
DAY
90°F
NW 7 mph
precip
36%
NIGHT
88°F
W 12 mph
precip
20%
09.23
wed
DAY
88°F
NW 8 mph
precip
44%
NIGHT
88°F
W 7 mph
precip
12%
09.24
thu
DAY
88°F
N 6 mph
precip
44%
NIGHT
88°F
SW 11 mph
precip
20%
09.25
fri
DAY
86°F
NE 7 mph
precip
54%
NIGHT
88°F
W 9 mph
precip
32%
09.26
sat
DAY
84°F
NW 10 mph
precip
19%
NIGHT
86°F
W 8 mph
precip
26%
09.27
sun
DAY
86°F
SW 9 mph
precip
50%
NIGHT
86°F
SE 8 mph
precip
17%
09.28
mon
DAY
86°F
S 7 mph
precip
15%
NIGHT
88°F
W 12 mph
precip
17%

Key Largo Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Key Largo was 92.1°F. The maximum and minimum values were 91.0°F and 92.8°F respectively.

Key Largo on the Weather Map

Best Time to Visit Key Largo
The most sunny months:
December 12 days
February 12 days
March 12 days
The most warm months:
August 89.8 °F
July 89.3 °F
September 88.4 °F
Warmest sea temperature:
August 91.9 °F
July 91.4 °F
September 90.7 °F
The most cold months:
January 72.9 °F
February 75.2 °F
December 75.6 °F
The most rainy months:
June 3 days
September 3 days
July 3 days
The most windy months:
March 14 mph
November 14 mph
April 13 mph
more details
USA Resorts:
NAME
F°
Boston +64
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +74
Maui +66
Miami +92
Myrtle Beach +88
New York +72
Panama City Beach +90
San Diego +72
San Francisco +60
Santa Monica +72
Sarasota +94
Washington +76
all resorts
24 Hours Weather Forecast
Key Largo
Local time: 11:07
15 sep, tuesday
1200 90°F
W
11 mph
1500 90°F
W
12 mph
1800 90°F
W
17 mph
2100 90°F
W
20 mph
16 sep, wednesday
0000 90°F
W
20 mph
0300 88°F
W
17 mph
0600 88°F
W
17 mph
0900 88°F
W
16 mph