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December Weather in Saint Martinville, United States

Last updated: June 24, 2025

In December, the average temperature in Saint Martinville, United States hovers around 14°C (57°F). Expect temperatures to range from a chilly -3°C (28°F) to a warm 29°C (84°F). Rainfall can be anticipated, with 108 mm (4.2 in) of precipitation spread over 11 days, contributing to an average humidity level of 88%.

December Temperature in Saint Martinville

In December in Saint Martinville, the average temperature is 14°C (57°F), with maximums reaching up to 29°C (84°F) and minimums dropping as low as -3°C (28°F). Be prepared for a wide range of temperatures during your travels, ensuring you pack accordingly for both warm and cool conditions.

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

The chart illustrates December temperature patterns in Saint Martinville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Martinville, December typically has an average temperature of 14°C (57°F), with highs reaching up to 29°C (84°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec535965687781828279736057
Data source: Temperature data for Saint Martinville 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 Martinville

In Saint Martinville in December, the precipitation amount is 108 mm (4.2 in), distributed over 11 days.

December Precipitation Trends in Saint Martinville

The chart displays monthly precipitation patterns in Saint Martinville, 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 Martinville, December typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1011067413614716519316513210680108
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Saint Martinville

In Saint Martinville in December humidity is 88%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and giving a sense of stickiness that can drain your energy quickly while exploring.

December Average Humidity in Saint Martinville

This chart illustrates the average monthly humidity levels in Saint Martinville, 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 Martinville is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%83%80%81%81%78%79%79%79%77%85%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Saint Martinville

In Saint Martinville in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Saint Martinville.

Maximum UV Index Levels in Saint Martinville for December

The chart shows the monthly maximum UV Index (UVI) for Saint Martinville 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 Martinville typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112121110965
Data source: Saint Martinville 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 Martinville Compares to Other Months

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

This table compares monthly weather conditions in Saint Martinville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)101 mm (4.0 inches)83%moderate
February Weather15°C (59°F)106 mm (4.2 inches)83%very high
March Weather18°C (65°F)74 mm (2.9 inches)80%very high
April Weather20°C (69°F)136 mm (5.3 inches)81%extreme
May Weather25°C (77°F)147 mm (5.8 inches)81%extreme
June Weather27°C (81°F)165 mm (6.5 inches)78%extreme
July Weather28°C (83°F)193 mm (7.6 inches)79%extreme
August Weather28°C (82°F)164 mm (6.5 inches)79%extreme
September Weather26°C (80°F)132 mm (5.2 inches)79%very high
October Weather23°C (73°F)106 mm (4.2 inches)77%very high
November Weather16°C (61°F)80 mm (3.2 inches)85%high
December Weather14°C (57°F)108 mm (4.2 inches)88%moderate

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