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Guantanamo Weather in September
With daytime temperatures of 32°C (90°F) and nighttime lows of 26°C (79°F), September in Guantanamo brings very high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 88 mm (3.5 in) falls on average.
Rainfall in Guantanamo in September
On average, there are about 14 days with rain during this month, averaging 88 mm (3.5 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Guantanamo in September
Guantanamo in September gets highs of 32°C (90°F) during the day and drops to 26°C (79°F) at night. The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. At 26°C (79°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.If you prefer dry days with pleasant temperatures, January, February, March and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Guantanamo Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
32°C (90°F)
Chance of Rain
47%
Precipitation
88 mm (3.5 in)
Rainy days
14 days
Guantanamo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Guantanamo - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Guantanamo typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Guantanamo in September
Browse day-by-day weather records for Guantanamo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Guantanamo historical weather extremes in September
According to our 50 years of weather records for Guantanamo, the following extremes were recorded between 1976 and 2026.
- Guantanamo recorded its highest September temperature of 37°C (99°F) on September 4, 2018.
- On September 21, 2002, Guantanamo saw its coldest September day with temperatures maxing out at 27°C (81°F).
- The coldest night in September in Guantanamo was on September 20, 1977, with a minimum of 18°C (64°F).
Best Places in Cuba in September
Find out more about the weather in Cuba and which places have the best travel conditions in this month. See all of Cuba in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Guantanamo in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in Guantanamo in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Guantanamo 3-Day Forecast
More climate data for Guantanamo
See the full Guantanamo climate overview or explore weather in Cuba.
Popular in September
Where to go in September - average daytime high across popular destinations.
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