World Resorts USA Key Largo Weather

Key Largo weather in September

Weather in Key Largo: September

Average day temperature: 84.2°F
Average night temperature: 82.7°F
Sea water temperature: 86.5°F
Number of sunny days: 5 days
Day length: 11.9 - 12.6 hours
Number of rainy days: 4 days
Precipitation totals: 2.9 in.

Air temperature in September, °F

Show year:
2023
2022
2021

The highest day temperature during September of 2023 was 87°F. At the same time the lowest night temperature was 79°F. Day and night temperature averages during September were 83.9°F and 83.3°F.

Sea water temperature in Key Largo in September, °F

Show year:
2023
2022
2021

The average sea water temperature in September of 2023 was 86.7°F. The highest and lowest sea temperatures during the month were 88.5°F and 84.6°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Key Largo in September is 2.9 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 9.7 mph It makes September lest windy month of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 6.2.

Best time for vacation in Key Largo

Sunniest months:
January 10 days
April 10 days
February 9 days
Warmest months:
July 85.1 °F
August 85.0 °F
September 84.2 °F
Warmest sea temp:
August 87.4 °F
July 87.3 °F
September 86.5 °F
Coldest months:
January 71.8 °F
December 72.8 °F
February 73.3 °F
Rainiest months:
July 4 days
September 4 days
June 4 days
Windiest months:
November 14.0 mph
March 13.9 mph
April 13.1 mph

Key Largo on a weather map

Key Largo
+81°F
NW 14 mph
Feels like: +84°F
Precip.: 0%
Places in USA:
Name
°F
+57°F
+68°F
+72°F
+72°F
+59°F
+59°F
+81°F
+64°F
+81°F
+59°F
+57°F
+81°F
+81°F
+79°F
+52°F
24 Hours Forecast
Key Largo
Local time: 10:28
May 09, thursday
1200
81°F
NW
12 mph
1500
81°F
NW
9 mph
1800
81°F
NW
9 mph
2100
81°F
NW
11 mph
May 10, friday
0000
81°F
NW
12 mph
0300
81°F
NW
16 mph
0600
81°F
NW
12 mph
0900
81°F
N
13 mph
Units of measurement: °C / °F