Warm
Average highs sit around 32°C, giving warm days by monthly-average standards.
September verdict
Key Largo, Florida, United States in September
Weather score62Good
Good for holiday weather
Average highs sit around 32°C, giving warm days by monthly-average standards. Sunshine averages 8.5h per day, so bright days are a strong part of the month. Rainfall averages 213mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
32°C
Rain
213mm
Sun
8.5h
Sea
29°C
Weather score
62
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 213mm, so showers are a real planning factor.
Bright
Sunshine averages 8.5h per day, so bright days are a strong part of the month.
Warm sea
Sea temperatures average 29°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Key Largo, Florida, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September32°C average high
September is one of Key Largo's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September213mm average rain
September is wetter than Key Largo's yearly average, so flexible plans matter more.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September8.5 hours average sun
September sits close to Key Largo's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September29°C average sea
September is one of Key Largo's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJune to September
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
September62 weather score
September is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsMarch to April and November
These months have the strongest weather score in the monthly averages.
