The weather in Guantanamo in September is very hot. The average temperatures are between 25°C and 31°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Guantanamo. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Guantanamo in September 2025.
If you’re planning to visit Guantanamo in the near future, we highly recommend that you review the 14 day weather forecast for Guantanamo before you arrive.
Temperatures
31° / 25°
Rainy Days
9
Snowy Days
0
Dry Days
21
Rainfall
142
mm
Sun Hours
11.7
Hrs
