Hot
Average highs reach 33°C, so days can feel very hot.
September verdict
Guantánamo Bay, Cuba in September
Weather score64Good
Good for holiday weather
Average highs reach 33°C, so days can feel very hot. Sunshine averages 6.1h per day, enough for a balanced month. Rainfall averages 100mm, so some wet days are possible.
September weather
Monthly averages
Temp
33°C
Rain
100mm
Sun
6.1h
Sea
30°C
Weather score
64
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 100mm, so some wet days are possible.
Some sun
Sunshine averages 6.1h per day, enough for a balanced month.
Warm sea
Sea temperatures average 30°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Guantánamo Bay, Cuba with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September33°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to October
This stretch sets the upper range for average daytime heat.
Rain
September100mm average rain
September sits near Guantánamo Bay's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to April, June to August, and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September6.1 hours average sun
September is below Guantánamo Bay's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsFebruary to April and July to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September30°C average sea
September is one of Guantánamo Bay's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJune to November
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
September64 weather score
September scores below Guantánamo Bay's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to April and November to December
These months have the strongest weather score in the monthly averages.