Monthly climate guide
Guantánamo weather in September
September in Guantánamo is typically hot, with average daytime highs around 32°C (89°F) and night-time lows near 26°C (79°F). The month usually brings about 52 mm of rain (some rain) and is a mix of sun and cloud. Daytime highs are about the same as August and about the same as October.
What stands out in September
- Just 150 km apart, but Guantánamo runs about 2°C cooler than Bayamo this month.
- There's little difference between day and night (around 5°C).
- Humidity near 73% makes 32°C feel stickier than it sounds.
- Only one month is warmer in Guantánamo than September.
Avg high
32°C
89°F
Avg low
26°C
79°F
Rainfall
52 mm
some rain
Humidity
73%
relative
Sky
52%
cloud · a mix of sun and cloud
Guantánamo weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 29°C / 84°F | 23°C / 73°F | 22 mm | 73% | 36% |
| February | 29°C / 85°F | 23°C / 73°F | 18 mm | 71% | 30% |
| March | 30°C / 86°F | 23°C / 73°F | 14 mm | 67% | 33% |
| April | 31°C / 88°F | 24°C / 75°F | 21 mm | 68% | 39% |
| May | 31°C / 88°F | 25°C / 77°F | 45 mm | 71% | 54% |
| June | 31°C / 88°F | 26°C / 79°F | 62 mm | 72% | 56% |
| July | 32°C / 89°F | 26°C / 79°F | 24 mm | 72% | 44% |
| August | 32°C / 89°F | 27°C / 80°F | 47 mm | 73% | 46% |
| September | 32°C / 89°F | 26°C / 79°F | 52 mm | 73% | 52% |
| October | 30°C / 87°F | 26°C / 78°F | 123 mm | 77% | 54% |
| November | 30°C / 85°F | 25°C / 76°F | 64 mm | 76% | 45% |
| December | 29°C / 85°F | 24°C / 75°F | 23 mm | 75% | 32% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A small travel umbrella, just in case
Is September a good time to visit Guantánamo?
Compare the months in the chart above to find your ideal window.
Best time to visit Guantánamo →Other Cuba cities in September
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Guantánamo weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/cuba/guantanamo/september
<a href="https://weathercompare.eu/weather/cuba/guantanamo/september">Guantánamo weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/cuba/guantanamo" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Guantánamo weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/cuba/guantanamo/september">Guantánamo weather in September</a> – WeatherCompare</p>
Guantánamo in September: quick answers
Is September a good time to visit Guantánamo?
It can be, if you like heat: September highs in Guantánamo are around 32°C. Good for the beach; plan sightseeing for early morning and evening.
How warm is Guantánamo in September?
Average highs are about 32°C (89°F) and average lows about 26°C (79°F), based on 10 years of daily data.
Does it rain a lot in Guantánamo in September?
Guantánamo typically gets around 52 mm of rain in September — some rain.
Figures are long-term averages for the area around Guantánamo (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.