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December Weather in Saint Martin, United States

Last updated: June 24, 2025

In Saint Martin, United States, the average temperature in December hovers around 13°C (56°F), with the mercury dipping as low as -2°C (28°F) and peaking at 26°C (80°F). Expect to see approximately 110 mm (4.3 in) of precipitation spread over 12 days, contributing to a notably high average humidity of 87%. Embrace the weather, but don’t forget your umbrella!

December Temperature in Saint Martin

In December in Saint Martin, the average temperature is 13°C (56°F). Maximums can reach 26°C (80°F), while minimums can drop as low as -2°C (28°F). Be sure to pack for a range of temperatures when traveling to this destination!

December Weather in Saint Martin: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Saint Martin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Martin, December typically has an average temperature of 13°C (56°F), with highs reaching up to 26°C (80°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec535964687580828179726056
Data source: Temperature data for Saint Martin 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 Saint Martin

In Saint Martin in December, the precipitation amount is 110 mm (4.3 in) over a span of 12 days.

December Precipitation Trends in Saint Martin

The chart displays monthly precipitation patterns in Saint Martin, 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 Saint Martin, December typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec921078912213224719022414513258110
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Saint Martin

In Saint Martin in December humidity is 87%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it challenging to explore comfortably.

December Average Humidity in Saint Martin

This chart illustrates the average monthly humidity levels in Saint Martin, 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 Saint Martin is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%78%73%71%79%78%80%76%83%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Saint Martin

In Saint Martin 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 Saint Martin for better planning.

Maximum UV Index Levels in Saint Martin for December

The chart shows the monthly maximum UV Index (UVI) for Saint Martin 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 Saint Martin typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111121110864
Data source: Saint Martin 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 Saint Martin Compares to Other Months

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

This table compares monthly weather conditions in Saint Martin, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (53°F)92 mm (3.6 inches)82%moderate
February Weather15°C (59°F)107 mm (4.2 inches)80%very high
March Weather18°C (64°F)88 mm (3.5 inches)80%very high
April Weather20°C (68°F)122 mm (4.8 inches)78%extreme
May Weather24°C (76°F)132 mm (5.2 inches)73%extreme
June Weather27°C (81°F)247 mm (9.7 inches)71%extreme
July Weather28°C (82°F)189 mm (7.5 inches)79%extreme
August Weather27°C (82°F)224 mm (8.8 inches)78%extreme
September Weather26°C (79°F)145 mm (5.7 inches)80%very high
October Weather22°C (73°F)132 mm (5.2 inches)76%very high
November Weather15°C (60°F)58 mm (2.3 inches)83%high
December Weather13°C (56°F)110 mm (4.3 inches)87%moderate

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