Measurements:
°C
°F
CURRENT WEATHER
21:27
Key Largo
86°F
NW 7 mph
Feels like: 94°F
Precip: 9%
World Resorts USA Key Largo Weather

7 Day Weather Forecast

10.05
mon
DAY
86°F
NW 6 mph
precip
9%
NIGHT
86°F
W 6 mph
precip
7%
10.06
tue
DAY
86°F
NW 5 mph
precip
7%
NIGHT
86°F
E 2 mph
precip
6%
10.07
wed
DAY
86°F
N 6 mph
precip
6%
NIGHT
86°F
N 5 mph
precip
52%
10.08
thu
DAY
86°F
N 11 mph
precip
17%
NIGHT
86°F
NW 7 mph
precip
8%
10.09
fri
DAY
86°F
NW 12 mph
precip
12%
NIGHT
86°F
W 12 mph
precip
56%
10.10
sat
DAY
86°F
NW 14 mph
precip
59%
NIGHT
88°F
NW 14 mph
precip
68%
10.11
sun
DAY
88°F
NW 14 mph
precip
27%
NIGHT
86°F
W 9 mph
precip
31%

Key Largo Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Key Largo was 28.4°F. The maximum and minimum values were 26.8°F and 30.0°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 88.3 °F
Warmest sea temperature:
August 91.9 °F
July 91.4 °F
September 90.8 °F
The most cold months:
January 72.9 °F
February 75.2 °F
December 75.6 °F
The most rainy months:
September 4 days
June 3 days
July 3 days
The most windy months:
March 14 mph
November 14 mph
April 13 mph
more details