Climate averages 1991–2020
Guantánamo weather
in September.
A hot, wet month: the 4th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Guantánamo: daytime highs average 32.2°C and nights cool to about 24.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 137 mm of rain on roughly 22 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 16 min on an average September day.
The nearest other city in this atlas is Moa (63 km away). In September its highs average 30.6°C, 1.6°C cooler than Guantánamo, with 121 mm of rain.
Among the 21 cities listed in Cuba, Guantánamo ranks 3rd of 21 for the warmest September highs and 12th of 21 for the driest September (rainfall, lowest first). The mean September high of those 21 cities is 31.2°C; Guantánamo is 0.9°C warmer than that mean.
From September to October, average highs fall by 1.3°C to 30.8°C, and monthly rainfall falls from 137 mm to 117 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Guantánamo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.4°C20.4°C | 20.4°C | 16 | 4.2 | 11.111 h |
| February | 30.0°C20.3°C | 20.3°C | 16 | 3.6 | 11.511 h |
| March | 30.3°C20.6°C | 20.6°C | 34 | 6.3 | 12.012 h |
| April | 31.0°C21.7°C | 21.7°C | 58 | 9.7 | 12.613 h |
| May | 31.1°C22.8°C | 22.8°C | 139 | 17.2 | 13.113 h |
| June | 32.3°C24.0°C | 24.0°C | 99 | 16.6 | 13.313 h |
| July | 33.8°C24.7°C | 24.7°C | 77 | 16.7 | 13.213 h |
| August | 33.6°C24.7°C | 24.7°C | 98 | 18.4 | 12.813 h |
| September, selected | 32.2°C24.1°C | 24.1°C | 137 | 21.5 | 12.312 h |
| October | 30.8°C23.4°C | 23.4°C | 117 | 18.7 | 11.712 h |
| November | 30.0°C22.2°C | 22.2°C | 58 | 10.0 | 11.211 h |
| December | 29.5°C21.1°C | 21.1°C | 26 | 5.2 | 10.911 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Moa in SeptemberCuba · 63 kmHigh 30.6°C · Low 25.7°C · 121 mm rain
- Santiago de Cuba in SeptemberCuba · 65 kmHigh 31.2°C · Low 24.7°C · 115 mm rain
- Palma Soriano in SeptemberCuba · 82 kmHigh 31.3°C · Low 23.5°C · 135 mm rain
- Contramaestre in SeptemberCuba · 109 kmHigh 32.1°C · Low 23.7°C · 122 mm rain
- Holguín in SeptemberCuba · 137 kmHigh 31.5°C · Low 24.0°C · 139 mm rain
- Bayamo in SeptemberCuba · 152 kmHigh 32.5°C · Low 23.3°C · 170 mm rain
- Puerto Padre in SeptemberCuba · 186 kmHigh 31.3°C · Low 25.2°C · 121 mm rain
- Manzanillo, Cuba in SeptemberCuba · 200 kmHigh 32.3°C · Low 24.4°C · 157 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Guantánamo) is explained once on the Guantánamo year overview and on the Sources, method and limits page.