Guantánamo Bay weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Excellent
Best time to visit: November – July
What is the weather like in Guantánamo Bay in December?
In December, Guantánamo Bay is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. The sea averages 27.8 °C – lovely and warm for swimming. The sun shines for around 7 hours a day. Rain is rare: about 2 days bring 19 mm in total. On about 8 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is an excellent month for a holiday in Guantánamo Bay.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 90 | 95 | 95 |
| Day | 30° | 29° | 29° |
| Night | 23° | 22° | 21° |
| Sea | 29° | 28° | 27° |
| Sun | 7 h | 7 h | 8 h |
| Rain days | 6 | 2 | 1 |
More details for December
- Daylight
- 10 h 56 min06:28 – 17:24
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 27 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 30 %on averageAll months
- Hot days
- 8 days30 °C or moreAll months
- Time zone
- UTC−5America/New_York
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %73 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Swimwear
- Sunscreen
- Light, breathable clothes
- Insect repellent
Guantánamo Bay in December: quick answers
Is Guantánamo Bay hot in December?
Yes. In December, Guantánamo Bay is hot: daytime highs average 29 °C and nights stay around 22 °C. On about 8 days the thermometer climbs to 30 °C or more.
Can you swim in Guantánamo Bay in December?
Yes. In December the sea averages 27.8 °C – lovely and warm for swimming.
Does it rain much in Guantánamo Bay in December?
Rain is rare: about 2 days bring 19 mm in total.
Guantánamo Bay month by month
The whole year in Guantánamo BayAll destinations: CubaCaribbean weather in DecemberWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences