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December Weather in Guantanamo, Cuba

Last updated: August 23, 2025

In December, the average temperature in Guantanamo, Cuba is a pleasant 24°C (76°F). Expect a comfortable range, with temperatures dipping to a minimum of 17°C (64°F) and reaching a maximum of 31°C (89°F). Be prepared for a bit of rain, as 36 mm (1.4 in) of precipitation is expected over 6 days. With an average humidity of 80%, the air will be refreshingly humid, adding to the overall charm of your visit.

December Temperature in Guantanamo

In December, in Guantanamo, the average temperature is 24°C (76°F). Maximums can reach 31°C (89°F), and minimums can be as low as 17°C (64°F). This pleasant climate makes Guantanamo an ideal destination for outdoor activities and exploration during this time.

December Weather in Guantanamo: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Guantanamo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guantanamo, December typically has an average temperature of 24°C (76°F), with highs reaching up to 31°C (89°F) and lows dropping to around 17°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec747676787981828281797776
Data source: Temperature data for Guantanamo generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Guantanamo

In Guantanamo in December, the total precipitation amount is 36 mm (1.4 in), which falls over the course of 6 days.

December Precipitation Trends in Guantanamo

The chart displays monthly precipitation patterns in Guantanamo, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Guantanamo, December typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec211537552038896971361079436
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Guantanamo

In Guantanamo in December humidity is 80%. With an average temperature of 24°C (76°F), this humidity feels like a warm, sticky embrace that can make exploring outdoors quite draining, so it's essential to stay hydrated and take breaks in the shade while traveling.

December Average Humidity in Guantanamo

This chart illustrates the average monthly humidity levels in Guantanamo, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Guantanamo is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%72%72%70%73%78%81%80%80%82%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Guantanamo

In Guantanamo in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Guantanamo.

Maximum UV Index Levels in Guantanamo for December

The chart shows the monthly maximum UV Index (UVI) for Guantanamo in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Guantanamo typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911121313131313131198
Data source: Guantanamo December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Guantanamo Compares to Other Months

Weather in Guantanamo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Guantanamo, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Guantanamo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)21 mm (0.8 inches)76%very high
February Weather24°C (76°F)15 mm (0.6 inches)74%extreme
March Weather24°C (76°F)37 mm (1.4 inches)72%extreme
April Weather26°C (78°F)55 mm (2.2 inches)72%extreme
May Weather26°C (79°F)203 mm (8.0 inches)70%extreme
June Weather27°C (81°F)88 mm (3.4 inches)73%extreme
July Weather28°C (82°F)96 mm (3.8 inches)78%extreme
August Weather28°C (82°F)97 mm (3.8 inches)81%extreme
September Weather27°C (81°F)136 mm (5.4 inches)80%extreme
October Weather26°C (80°F)107 mm (4.2 inches)80%extreme
November Weather25°C (78°F)94 mm (3.7 inches)82%very high
December Weather24°C (76°F)36 mm (1.4 inches)80%very high

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