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December Weather in Santo Domingo, Mexico

Last updated: August 27, 2025

In Santo Domingo, Mexico, the average temperature in December hovers around 18°C (65°F), with daily extremes ranging from a cool 10°C (51°F) to a warm 25°C (78°F). Expect a precipitation level of 52 mm (2.0 in) over approximately 16 days, contributing to a relatively high average humidity of 76%. Stay prepared for a mix of mild weather and occasional rain!

December Temperature in Santo Domingo

In December in Santo Domingo, the average temperature is 18°C (65°F). The maximum can reach 25°C (78°F), while the minimum can drop to as low as 10°C (51°F). This pleasant weather makes Santo Domingo an ideal destination for travelers looking to enjoy mild temperatures and comfortable conditions.

December Weather in Santo Domingo: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santo Domingo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Domingo, December typically has an average temperature of 18°C (65°F), with highs reaching up to 25°C (78°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec646566676867676767676664
Data source: Temperature data for Santo Domingo 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 Santo Domingo

In Santo Domingo in December, the total precipitation amount is 52 mm (2.0 in) over the course of 16 days.

December Precipitation Trends in Santo Domingo

The chart displays monthly precipitation patterns in Santo Domingo, 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 Santo Domingo, December typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec39347713139548127243443636011452
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Santo Domingo

In Santo Domingo in December, humidity is 76%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making travel a little sticky but enjoyable, as long as you stay hydrated and take breaks in the shade.

December Average Humidity in Santo Domingo

This chart illustrates the average monthly humidity levels in Santo Domingo, 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 Santo Domingo is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santo Domingo

In Santo Domingo in December, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Santo Domingo.

Maximum UV Index Levels in Santo Domingo for December

The chart shows the monthly maximum UV Index (UVI) for Santo Domingo 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 Santo Domingo typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315151515151414131110
Data source: Santo Domingo 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 Santo Domingo Compares to Other Months

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

This table compares monthly weather conditions in Santo Domingo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)39 mm (1.5 inches)76%extreme
February Weather18°C (65°F)34 mm (1.3 inches)68%extreme
March Weather19°C (66°F)77 mm (3.0 inches)59%extreme
April Weather19°C (67°F)131 mm (5.1 inches)57%extreme
May Weather20°C (68°F)395 mm (15.6 inches)65%extreme
June Weather20°C (67°F)481 mm (18.9 inches)66%extreme
July Weather20°C (68°F)272 mm (10.7 inches)75%extreme
August Weather19°C (67°F)434 mm (17.1 inches)82%extreme
September Weather19°C (67°F)436 mm (17.2 inches)82%extreme
October Weather19°C (67°F)360 mm (14.2 inches)83%extreme
November Weather19°C (66°F)114 mm (4.5 inches)80%extreme
December Weather18°C (65°F)52 mm (2.0 inches)76%very high

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