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December Weather in Grenada, United States

Last updated: June 24, 2025

In December, the average temperature in Grenada, United States hovers around 10°C (50°F), with a minimum dipping to -5°C (24°F) and a potential maximum reaching 26°C (79°F). Expect 133 mm (5.3 in) of precipitation spread over 9 days, and prepare for a high average humidity of 88%, making it a notably moist month.

December Temperature in Grenada

In December in Grenada, the average temperature is 10°C (50°F), with maximums reaching 26°C (79°F) and minimums dipping as low as -5°C (24°F). This variation in temperatures makes it essential for travelers to pack layers to stay comfortable throughout the day.

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

The chart illustrates December temperature patterns in Grenada, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grenada, December typically has an average temperature of 10°C (50°F), with highs reaching up to 26°C (79°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec465058637379828177675350
Data source: Temperature data for Grenada 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 Grenada

In Grenada in December, the precipitation amount is 133 mm (5.3 in) spread over 9 days.

December Precipitation Trends in Grenada

The chart displays monthly precipitation patterns in Grenada, 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 Grenada, December typically receives around 133 mm (5.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec120185164149109131961199112480134
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Grenada

In Grenada in December, humidity is 88%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and encouraging travelers to seek cozy indoor activities instead.

December Average Humidity in Grenada

This chart illustrates the average monthly humidity levels in Grenada, 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 Grenada is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Grenada

In Grenada in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Grenada for better planning.

Maximum UV Index Levels in Grenada for December

The chart shows the monthly maximum UV Index (UVI) for Grenada 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 Grenada typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
Data source: Grenada 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 Grenada Compares to Other Months

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

This table compares monthly weather conditions in Grenada, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)119 mm (4.7 inches)85%moderate
February Weather10°C (50°F)185 mm (7.3 inches)84%high
March Weather15°C (58°F)164 mm (6.5 inches)82%very high
April Weather17°C (63°F)149 mm (5.9 inches)82%very high
May Weather23°C (73°F)109 mm (4.3 inches)82%extreme
June Weather26°C (79°F)131 mm (5.1 inches)79%extreme
July Weather28°C (82°F)96 mm (3.8 inches)82%extreme
August Weather27°C (81°F)119 mm (4.7 inches)77%extreme
September Weather25°C (78°F)91 mm (3.6 inches)74%very high
October Weather19°C (67°F)124 mm (4.9 inches)73%very high
November Weather12°C (53°F)80 mm (3.1 inches)85%high
December Weather10°C (50°F)133 mm (5.3 inches)88%moderate

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