World Resorts USA Key Largo Weather

Key Largo 14 Days Forecast

27.09
sun
Day
79°F
E 4 mph
Precip.
5%
Night
81°F
E 8 mph
Precip.
17%
28.09
mon
Day
81°F
E 7 mph
Precip.
6%
Night
82°F
NE 4 mph
Precip.
17%
29.09
tue
Day
82°F
NW 6 mph
Precip.
53%
Night
82°F
W 9 mph
Precip.
11%
30.09
wed
Day
82°F
W 17 mph
Precip.
71%
Night
82°F
W 27 mph
Precip.
19%
01.10
thu
Day
82°F
NW 21 mph
Precip.
45%
Night
84°F
W 18 mph
Precip.
38%
02.10
fri
Day
84°F
W 17 mph
Precip.
22%
Night
84°F
W 14 mph
Precip.
27%
03.10
sat
Day
84°F
W 14 mph
Precip.
13%
Night
84°F
W 14 mph
Precip.
25%
04.10
sun
Day
84°F
NW 14 mph
Precip.
42%
Night
84°F
W 14 mph
Precip.
10%
05.10
mon
Day
84°F
NW 13 mph
Precip.
11%
Night
84°F
NW 11 mph
Precip.
39%
06.10
tue
Day
84°F
NW 9 mph
Precip.
8%
Night
84°F
W 10 mph
Precip.
9%
07.10
wed
Day
84°F
W 14 mph
Precip.
10%
Night
82°F
W 13 mph
Precip.
54%
08.10
thu
Day
84°F
NW 12 mph
Precip.
11%
Night
84°F
NW 14 mph
Precip.
22%
09.10
fri
Day
84°F
N 14 mph
Precip.
20%
Night
82°F
N 17 mph
Precip.
28%
10.10
sat
Day
81°F
NE 8 mph
Precip.
64%
Night
81°F
N 4 mph
Precip.
49%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 87.4°F. The highest and lowest sea temperatures during the month were 88.5°F and 85.3°F.

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 83.0°F. The highest and lowest sea temperatures during the month were 86.0°F and 80.2°F.

Air temperature in Key Largo, °F

Precipitation total in Key Largo, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Key Largo

Sunniest months:
December 12 days
February 12 days
March 12 days
Warmest months:
August 85.8 °F
July 85.4 °F
September 84.5 °F
Warmest sea temp:
August 87.7 °F
July 87.3 °F
September 86.7 °F
Coldest months:
January 70.6 °F
February 72.7 °F
December 73.0 °F
Rainiest months:
September 4 days
June 3 days
July 3 days
Windiest months:
March 13.9 mph
November 13.9 mph
April 13.7 mph

Key Largo on a weather map

Current weather
19:16
Key Largo
+82°F
NE 14 mph
Feels like: +86°F
Precip.: 8%
Places in USA:
Name
°F
Boston
+59°F
Washington
+57°F
Hawaii
+79°F
Las Vegas
+84°F
Los Angeles
+86°F
Miami
+82°F
Maui
+66°F
New York
+61°F
Panama City Beach
+84°F
San Diego
+75°F
San Francisco
+61°F
Santa Monica
+77°F
Sarasota
+81°F
Houston
+86°F
Chicago
+61°F
all places
24 Hours Forecast
Key Largo
Local time: 19:16
September 27, sunday
2100
81°F
E
12 mph
September 28, monday
0000
81°F
E
8 mph
0300
81°F
SE
9 mph
0600
79°F
SE
6 mph
0900
79°F
E
5 mph
1200
81°F
E
7 mph
1500
81°F
NE
7 mph
1800
81°F
NE
9 mph
Units of measurement: °C / °F