December Weather in San Lucas, Mexico

Last updated: April 22, 2025

Experience the enchanting December weather in San Lucas, Mexico, where the atmosphere is typically warm and inviting. With a maximum temperature reaching 30°C (86°F) and a comfortable average of 16°C (61°F), visitors are greeted by pleasant daytime highs. Evenings can be cooler, with temperatures occasionally dropping to a minimum of 0°C (33°F). Adding to the allure, December boasts an exceptionally low precipitation level of just 3 mm (0.1 in) and zero rainy days, making it an ideal time for outdoor activities. The humidity remains high at 88%, creating a perfect tropical ambiance, perfect for enjoying the stunning natural beauty of the region. Whether exploring picturesque landscapes or relaxing on pristine beaches, December in San Lucas promises to be memorable.

December Temperature in San Lucas

In December, San Lucas, Mexico, welcomes the winter season with cooler temperatures that range significantly from a chilly 0°C (33°F) at night to a pleasant 30°C (86°F) during the day. This month typically sees an average temperature of 16°C (61°F), mirroring the cooler trends beginning in November. As the year winds down, visitors can expect mild days perfect for exploring the stunning landscapes, while evenings may require an extra layer to stay warm. Compared to the preceding months, December marks a noticeable shift from the warmth of late fall, inviting a refreshing yet comfortable climate for both holiday revelers and sun-seekers alike.

December Weather in San Lucas: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Lucas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec606466707168686868666361
Data source: Temperature data for San Lucas 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 San Lucas

In December, San Lucas, Mexico experiences a significant drop in precipitation, with only 3 mm (0.1 in) recorded—marking one of the driest months of the year. This month stands out as it features 0 days of rain, aligning with the overall trend of decreased rainfall as winter approaches. Following a wet season peaking in June and September, where rainfall reached impressive totals of 160 mm (6.3 in) and 145 mm (5.7 in) respectively, December's stark contrast emphasizes the region's seasonal variability. Interestingly, the diminishing precipitation is coupled with an overall trend of reduced rainfall in the latter part of the year, paving the way for drier and cooler conditions as the year comes to a close.

December Precipitation Trends in San Lucas

The chart displays monthly precipitation patterns in San Lucas, 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.
JanFebMarAprMayJunJulAugSepOctNovDec54113484160638914562113
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Lucas

In December, San Lucas, Mexico experiences a notable humidity level of 88%, maintaining a trend observed in the closing months of the year. As the holiday season approaches, humidity begins to rise, climbing from 82% in September to a peak of 91% in October and subsequently remaining high throughout November. While this month shows a slight decrease from the previous month’s high, it continues to reflect the region's tendency for increased moisture during winter. Overall, December’s humidity indicates a gradual yet persistent drop from the humid summer months, where July recorded the lowest levels at 68%, showcasing the area's transition into a more humid winter climate.

December Average Humidity in San Lucas

This chart illustrates the average monthly humidity levels in San Lucas, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%75%71%77%76%68%70%82%91%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Lucas

As December rolls in, San Lucas, Mexico, experiences a slight dip in the UV Index, measuring 9, which falls into the very high exposure category. With a recommended burn time of 15 minutes, it's essential for sun-seekers to remain vigilant. The trend throughout the year showcases consistently extreme UV levels from February through October, with values peaking at 15 in mid-year. Interestingly, both November and December return to a very high classification, giving a gentle reminder that even in winter, the sun's rays can be formidable. Whether you’re basking in the sun or engaging in outdoor activities, it's wise to stay informed and sun-safe. For more details, check the full San Lucas UV Index.

Maximum UV Index Levels in San Lucas for December

The chart shows the monthly maximum UV Index (UVI) for San Lucas 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.
JanFebMarAprMayJunJulAugSepOctNovDec10121415151515141412109
Data source: San Lucas 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.

December Sunshine in San Lucas

In December, San Lucas, Mexico basks in a delightful 299 hours of sunshine, making it a prime destination for those seeking warmth as the year draws to a close. The month witnesses a steady embrace of sunlight, reflecting a trend of robust daylight that begins with 243 hours in January and peaks in May at an impressive 329 hours. Following the summer months, where July and August deliver abundant sunshine, December offers a generous amount that is just shy of the year’s peak, ensuring that visitors can enjoy festive outdoor activities and stunning sunsets. This consistent glow not only highlights December's comforting climate but also invites sun-seekers to revel in the natural beauty and vibrant spirit of San Lucas during the holiday season.

Monthly Sunshine Duration in San Lucas: December Highlighted

The December sunshine duration represents the total number of hours San Lucas experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec243h279h320h318h329h298h330h317h289h304h295h299h
Data source: San Lucas December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Lucas During December

In San Lucas, Mexico, December offers a promising 66% chance of sunny weather, making it an enticing time for travelers seeking warmth and sunshine. While the likelihood of sunny days starts at a low point in June with only 8%, it gradually climbs through the months leading up to December. Notably, the sun shines most consistently in February with a peak of 72%, but December's percentage still stands strong, making it a reliable choice for those escaping colder climates. As the year wraps up, the combination of relatively mild temperatures and frequent sunny spells positions December as an excellent month to explore the vibrant landscape and enjoy outdoor activities in this beautiful coastal locale.

Percentage of Sunny Days in December in San Lucas

The chart illustrates the percentage of sunny days in San Lucas throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often San Lucas experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec40%72%65%58%41%8%26%27%17%30%45%66%
Data source: San Lucas December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Lucas in December

In San Lucas, Mexico, the daylight duration exhibits a fascinating rhythm throughout the year. As we transition from December, which enjoys about 11 hours of daylight, daylight gradually increases, reaching a peak of 13 hours in the summer months of June and July. After this sunny high, the hours start to recede, returning to 11 hours by October and settling at the same duration through November and December. This cyclical pattern not only marks the change of seasons but also enriches the local culture, inviting both residents and visitors to savor the beauty of each moment under the sun. With consistent daylight in the winter months, the charm of San Lucas continues to shine, proving that even in shorter days, there is a warmth that permeates the atmosphere.

Average Daylight Hours in San Lucas for December

The chart illustrates the variation in daylight duration in San Lucas throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 9m11h 32m12h 2m12h 33m12h 59m13h 12m13h 5m12h 42m12h 12m11h 41m11h 15m11h 2m
Data source: San Lucas daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in San Lucas

As December ushers in cooler temperatures in San Lucas, the average wind speed gently settles at 2.2 m/s (5 mph), reflecting a slight drop from the brisk winds of November. This month's winds mirror the trend observed through the year, with variants peaking in the spring and late fall. Notably, from July through September, the wind dances at a steady 2.5 m/s (6 mph), bringing a refreshing breeze that invites outdoor activities. Generally, however, the latter part of the year experiences milder winds, creating a pleasant, calm atmosphere perfect for enjoying the serene beachfront or exploring the vibrant local culture. As the year comes to a close, the December winds provide a soothing backdrop, blending seamlessly into the tranquil beauty of San Lucas.

Average December Wind Speed in San Lucas

The chart displays monthly wind speed patterns in San Lucas, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.52.62.42.21.72.52.51.82.32.72.2 m/s
Data source: San Lucas December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in San Lucas Compares to Other Months

The weather in San Lucas changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in San Lucas and find detailed weather information for every month.

In December, temperatures in San Lucas range from a chilly minimum of 0°C (33°F) to a warm maximum of 30°C (86°F), with an average temperature hovering around 16°C (61°F). The month sees minimal precipitation, with only 3 mm (0.1 in) recorded, and an impressive humidity level of 88%.

In contrast, January experiences slightly warmer minimum temperatures, with a low of 3°C (38°F), while the maximum remains the same at 30°C (86°F) and the average drops slightly to 16°C (60°F). Precipitation increases modestly to 5 mm (0.2 in), although there are still no rainy days, and the humidity decreases to 84%.

For more detailed information on January weather in San Lucas, you can visit San Lucas weather in January.

December and February exhibit mild variations in weather characteristics. December typically sees temperatures ranging from a minimum of 0°C (33°F) to a maximum of 30°C (86°F), with an average temperature of 16°C (61°F) and high humidity at 88%. In contrast, February offers slightly warmer conditions, with minimum temperatures at 4°C (39°F) and maximums reaching 32°C (91°F), averaging around 18°C (64°F) while experiencing a lower humidity of 78%. Both months receive minimal precipitation, with December recording 3 mm (0.1 in) and February slightly higher at 4 mm (0.1 in), yet neither month experiences rainy days. For more details, you can visit San Lucas weather in February.

In December, temperatures in San Lucas range from a minimum of 0°C (33°F) to a maximum of 30°C (86°F), with an average of 16°C (61°F). The month is characterized by high humidity at 88% and very little precipitation, averaging just 3 mm over no rainy days. In contrast, March sees a warmer climate, with minimum temperatures of 6°C (42°F) and maximums reaching 33°C (92°F), averaging around 19°C (66°F). The humidity drops to 75%, and there is slightly more rainfall, totaling 11 mm over two days. For more detailed weather information, check out San Lucas weather in March.

December and April present contrasting weather conditions. In December, temperatures can range from a minimum of 0°C (33°F) to a maximum of 30°C (86°F), with an average of 16°C (61°F). This month typically experiences low precipitation, with only 3 mm (0.1 in) recorded and no rainy days, alongside a high humidity level of 88%. Conversely, April sees warmer temperatures, with a minimum of 7°C (45°F) and a maximum of 33°C (92°F), averaging 21°C (70°F). This month is much wetter, featuring 34 mm (1.3 in) of precipitation over 6 days, and a lower humidity of 70%. For more detailed insights on April weather, visit San Lucas weather in April.

December and May present markedly different weather conditions. In December, temperatures range from a brisk 0°C (33°F) at night to a warm 30°C (86°F) during the day, with an average of 16°C (61°F) and minimal precipitation of only 3 mm (0.1 in) across the month. The high humidity of 88% adds to the cool feel of the season. In contrast, May offers a more temperate experience with nighttime lows of 11°C (52°F) and daytime highs peaking at 34°C (93°F), averaging 22°C (71°F). However, it brings considerable rainfall, totaling 83 mm (3.3 in) over 13 days, with reduced humidity at 77%. For more details on the weather in May, you can check San Lucas weather in May.

December and June present quite contrasting weather conditions. In December, temperatures range from a minimum of 0°C (33°F) to a maximum of 30°C (86°F), with an average of 16°C (61°F). The month experiences minimal precipitation, only 3 mm (0.1 in) over the entire month, and boasts no rainy days, contributing to a high humidity level of 88%. In stark contrast, June sees milder temperatures with a minimum of 12°C (55°F) and a maximum of 31°C (88°F), averaging around 20°C (68°F). However, June is characterized by significantly higher precipitation, totaling 160 mm (6.3 in) over about 18 rainy days, and a lower humidity of 76%. For more details on June weather, you can visit San Lucas weather in June.

In December, temperatures can range from a cool 0°C (33°F) to a warm 30°C (86°F), with an average of 16°C (61°F) and exceptionally low precipitation, typically around 3 mm (0.1 in) and rarely any rainy days, resulting in high humidity levels of 88%. In contrast, July experiences milder minimum temperatures of 10°C (50°F) and a slightly higher maximum at 32°C (90°F), with an overall average of 20°C (68°F). July is much wetter, with precipitation reaching 63 mm (2.5 in) over about 8 days, and lower humidity at 68%. For more details, you can check San Lucas weather in July.

In December, temperatures in San Lucas range from a chilly 0°C (33°F) at night to a warm 30°C (86°F) during the day, with an average of 16°C (61°F). The month is characterized by very low precipitation, receiving only 3 mm (0.1 in) across zero rainy days, while humidity remains high at 88%. In contrast, August experiences milder nighttime temperatures with a minimum of 12°C (54°F) and daily highs reaching up to 32°C (89°F), averaging around 20°C (69°F). This month is significantly wetter, with 89 mm (3.5 in) of rain spread over 13 days, and a lower humidity level of 70%. For more detailed information, check San Lucas weather in August.

In December, the weather is typically milder with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 30°C (86°F), with an average of 16°C (61°F) and almost no precipitation. The humidity is relatively high at 88%, but the absence of rainy days makes December quite different from September. In contrast, September experiences a warmer average temperature of 20°C (68°F), with lows of 12°C (53°F) and highs reaching 30°C (87°F). Notably, September sees significant rainfall, with 145 mm (5.7 in) over 16 days, making it a much wetter month compared to December. For more specifics on September's conditions, you can explore San Lucas weather in September.

When comparing December and October weather, a noticeable shift occurs. December experiences a much milder temperature range, with minimums dropping to 0°C (33°F) and an average of 16°C (61°F), while October maintains a higher minimum of 9°C (48°F) and an average of 19°C (67°F). Moreover, October is significantly wetter, receiving 62 mm (2.4 in) of precipitation across 9 days, compared to December's dry conditions with only 3 mm (0.1 in) and no rainy days. Humidity remains relatively high in both months, with December at 88% and October slightly higher at 91%. For more details on October weather, check out San Lucas weather in October.

In December, the weather is slightly cooler compared to November, with minimum temperatures dipping to 0°C (33°F) and average temperatures around 16°C (61°F), while November sees lows of 6°C (43°F) and an average of 17°C (63°F). The maximum temperatures remain comparable, with December reaching up to 30°C (86°F) and November peaking at 31°C (88°F). Additionally, December experiences much less precipitation, with only 3 mm (0.1 in) over 0 days, compared to November's 11 mm (0.4 in) over 2 days. Humidity levels remain quite similar, hovering around 88% in December and 89% in November. For more detailed information, you can visit San Lucas weather in November.

Compare San Lucas's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in San Lucas

December in San Lucas welcomes you with a refreshing twist, contrasting sharply with the warmer months. The mild temperatures make it an ideal time to escape the heat, as daytime warmth and cool evenings create a pleasant atmosphere. With virtually no precipitation, December stands as one of the driest months, allowing for uninterrupted exploration of the area’s natural beauty. The high humidity adds a touch of tropical allure, but it’s the comfortable climate that makes this month unique. For more insights on the weather patterns throughout the year, visit San Lucas Climate.