December Weather in San Carlos, Mexico

Last updated: April 22, 2025

In December, San Carlos, Mexico, offers a mild climate characterized by a maximum temperature of 23°C (74°F) and an average temperature of 12°C (53°F). The month experiences a chilly minimum temperature of -4°C (25°F), making it the perfect time for cozy evenings. With only 5 mm (0.2 in) of precipitation spread over just 1 day, the chances of rain are minimal. The air, often laden with 88% humidity, adds a touch of warmth to this scenic coastal town, creating an inviting atmosphere for both relaxation and exploration.

December Temperature in San Carlos

In December, San Carlos, Mexico, experiences a refreshing shift in temperatures, with minimums dipping to -4°C (25°F), marking the coldest point of the year. As the month progresses, the average temperature hovers around 12°C (53°F), offering a crisp yet pleasant ambiance ideal for outdoor activities. Daily highs reach around 23°C (74°F), allowing for comfortable afternoons. This drop in temperature signifies the transition into winter, contrasting with the warmer months prior, where temperatures rarely fell below the teens. December thus encapsulates a delightful balance of cool nights and mild days, making it a unique time to explore the scenic beauty of San Carlos.

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

The chart illustrates December temperature patterns in San Carlos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec525558616261606060585453
Data source: Temperature data for San Carlos 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 Carlos

In December, San Carlos, Mexico experiences a notable decline in precipitation, with only 5 mm (0.2 in) recorded over just one day. This reduction marks a sharp contrast to the earlier months, particularly the intense rainfall seen in June and September, when precipitation levels soared to 161 mm and 176 mm, respectively. As the year winds down, the overall trend reveals a gradual shift from the wetness of summer to the arid conditions of winter, ultimately making December one of the driest months in the region. This seasonal pattern not only highlights the area's climatic diversity but also sets the stage for the clear, sunny days that define the winter months ahead.

December Precipitation Trends in San Carlos

The chart displays monthly precipitation patterns in San Carlos, 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.
JanFebMarAprMayJunJulAugSepOctNovDec14826669216111815217695265
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Carlos

In December, San Carlos experiences a humidity level of 88%, marking a slight decrease from the 89% observed in November. This time of year tends to be on the higher end of the scale, following a gradual decline from the peak humidity in October at 91%. Throughout the year, the region showcases an overall trend of decreasing humidity from the beginning of the year, with levels dipping to their lowest in July at 68%. However, as winter approaches, humidity begins to rise again, creating a rich, moist atmosphere that adds to the region's unique climatic charm. Whether you're enjoying the lush surroundings or preparing for the cooler nights, December's humidity levels play a significant role in shaping the local environment.

December Average Humidity in San Carlos

This chart illustrates the average monthly humidity levels in San Carlos, 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 Carlos

In December, San Carlos, Mexico experiences a UV Index of 9, categorized as very high, which means you should still take precautions during sun exposure. As the year rounds out, we see a gradual decline from the intense UV Index levels observed in the summer months, where readings have consistently reached 15 for several months. This trend highlights the region's extreme sun intensity from March through October, requiring a quick burn time of just 10 minutes during peak exposure. As winter approaches, the need for vigilance remains, with a slightly extended burn time of 15 minutes in both November and December. Whether soaking up the sun or enjoying outdoor activities, be sure to stay protected! For detailed insights, visit San Carlos UV Index.

Maximum UV Index Levels in San Carlos for December

The chart shows the monthly maximum UV Index (UVI) for San Carlos 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.
JanFebMarAprMayJunJulAugSepOctNovDec10121415151515141413109
Data source: San Carlos 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 Carlos

As December unfolds in San Carlos, Mexico, the region basks in an impressive 288 hours of sunshine, a delightful precursor to the sun-drenched months ahead. This brisk month of light is a charming contrast to the earlier winter days, showcasing a marked increase in daylight hours compared to the preceding months. Notably, December holds its ground in a generous lineup of sunlit days, following the warm embrace of November's 279 hours and leading up to the vibrant spring months starting in January, which brings 223 hours of sunshine. As we look back over the year, it's clear that San Carlos enjoys a consistent trend of abundant sunlight, perfect for those seeking a winter getaway filled with warmth and radiance.

Monthly Sunshine Duration in San Carlos: December Highlighted

The December sunshine duration represents the total number of hours San Carlos 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.
JanFebMarAprMayJunJulAugSepOctNovDec223h266h308h309h319h284h313h303h272h284h279h288h
Data source: San Carlos December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Carlos During December

In December, San Carlos, Mexico, boasts a 63% chance of sunny weather, making it one of the more promising months for sunshine as the year comes to a close. This figure marks a notable increase from the cooler months preceding it, particularly when compared to November's 37% likelihood. Following the dramatic dip in sunny days during the summer— June's 9% and July's 21%—there's a clear trend of returning brightness as temperatures moderate. As winter settles in, visitors can expect a delightful mix of sunny days and potential cool breezes, perfect for outdoor activities and enjoying the stunning coastal scenery.

Percentage of Sunny Days in December in San Carlos

The chart illustrates the percentage of sunny days in San Carlos 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 Carlos experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec47%80%66%55%35%9%21%28%13%26%37%63%
Data source: San Carlos December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Carlos in December

In San Carlos, Mexico, December marks a shift as daylight hours dwindle to 10 hours, continuing the trend of reduced sunlight that initiates in late autumn. Following a gradual increase from 11 hours in January and February to a peak of 13 hours during the summer months of May to July, the daylight duration sees a steady decline as the year wraps up. This cyclical pattern highlights the region's transition from longer summer days to the more subdued light of winter, ultimately creating a cozy atmosphere perfect for enjoying the tranquil beauty of the season.

Average Daylight Hours in San Carlos for December

The chart illustrates the variation in daylight duration in San Carlos throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 5m11h 30m12h 2m12h 35m13h 3m13h 16m13h 9m12h 44m12h 12m11h 40m11h 11m10h 57m
Data source: San Carlos daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in San Carlos

As December rolls in, San Carlos, Mexico, experiences a gentle easing of the winds, with an average speed of 1.7 m/s (4 mph). This slight decline marks the continuation of a trend observed throughout the cooler months, where wind speeds gradually decrease from the breezy heights of early winter. Starting from January's brisk 1.8 m/s, the winds softened through the year, with February and March showing a modest uptick before settling into a stable rhythm. December’s calmer conditions provide a tranquil backdrop, perfect for embracing the serene beauty of this coastal paradise, as it beckons visitors to unwind and enjoy the gentle embrace of the season.

Average December Wind Speed in San Carlos

The chart displays monthly wind speed patterns in San Carlos, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.82.32.12.01.91.71.82.01.71.91.91.7 m/s
Data source: San Carlos December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in San Carlos Compares to Other Months

The weather in San Carlos 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 Carlos and find detailed weather information for every month.

December and January share mild temperatures, but January tends to see slightly warmer conditions overall. While December experiences a minimum of -4°C (25°F) and an average of 12°C (53°F), January's minimum rises to -1°C (31°F) with an average of 11°C (52°F). Notably, January also features higher maximum temperatures, reaching up to 25°C (77°F) compared to December's max of 23°C (74°F). Additionally, January brings increased precipitation, totaling 14 mm (0.5 in) over three days, while December is relatively dry with just 5 mm (0.2 in) over a single day. Despite these differences, both months maintain high humidity, with December at 88% and January slightly lower at 84%. For a more detailed look at January weather, check out San Carlos weather in January.

In December, temperatures tend to range from a chilly minimum of -4°C (25°F) to a more comfortable maximum of 23°C (74°F), averaging around 12°C (53°F) with a high humidity level of 88%. The month experiences minimal precipitation, with only about 5 mm (0.2 in) over just one day. In contrast, February offers a milder climate with temperatures starting at a minimum of 1°C (34°F) and reaching a pleasant maximum of 28°C (82°F), averaging 13°C (56°F). Precipitation increases slightly to 8 mm (0.3 in) over two days, and humidity drops to 78%. This makes February generally feel warmer and less damp compared to December. For more details, check out San Carlos weather in February.

In December, the weather is relatively cool, with temperatures ranging from a chilly -4°C (25°F) at night to a pleasant 23°C (74°F) during the day. The month typically experiences low precipitation, with only about 5 mm (0.2 in) over just one day, and high humidity levels at 88%.

In contrast, March brings a noticeable warming trend, with nighttime lows of 2°C (36°F) and daytime highs reaching up to 29°C (84°F). This month sees increased precipitation of 25 mm (1.0 in) spread over six days, and humidity levels drop to 75%. For more detailed information, check out San Carlos weather in March.

December and April showcase a striking contrast in weather conditions. In December, temperatures range from a chilly minimum of -4°C (25°F) to a pleasant average of 12°C (53°F), peaking at a maximum of 23°C (74°F). The month is relatively dry, with only 5 mm (0.2 in) of precipitation over just 1 day and high humidity at 88%. In contrast, April experiences milder temperatures, with a minimum of 4°C (39°F) and an average of 16°C (61°F), soaring to a maximum of 28°C (82°F). However, it brings significantly more rainfall at 66 mm (2.6 in) spread across 12 days, along with a decrease in humidity to 70%. For more detailed information, check out San Carlos weather in April.

December and May present contrasting weather patterns, highlighting the seasonal shifts experienced in the region. In December, temperatures range from a chilly minimum of -4°C (25°F) to a pleasant maximum of 23°C (74°F), with an average of 12°C (53°F). The month typically features low precipitation, with only 5 mm (0.2 in) falling over just one day, and humidity levels are relatively high at 88%. In stark contrast, May brings much warmer conditions, with temperatures varying from a minimum of 6°C (43°F) to a maximum of 27°C (81°F), averaging around 16°C (62°F). Rainfall significantly increases to 92 mm (3.6 in) across 16 days, and humidity drops to 77%. For a deeper understanding of the climatic characteristics of May, visit San Carlos weather in May.

December and June showcase markedly different weather patterns. In December, temperatures range from a chilly minimum of -4°C (25°F) to a mild maximum of 23°C (74°F), with an average of 12°C (53°F). The month sees minimal rainfall, with only 5 mm (0.2 in) over just 1 day, and high humidity levels at 88%. In contrast, June experiences warmer temperatures, with a minimum of 6°C (43°F) and a maximum of 26°C (80°F), averaging 16°C (61°F). However, it is also much wetter, with a significant 161 mm (6.3 in) of precipitation spread over 22 days and humidity at a lower 76%. For more details on June weather, you can check San Carlos weather in June.

December and July present contrasting weather conditions. In December, temperatures range from a chilly minimum of -4°C (25°F) to a pleasant average of 12°C (53°F), peaking at a maximum of 23°C (74°F). The month is relatively dry with only 5 mm (0.2 in) of precipitation over just one day, and humidity is quite high at 88%. In contrast, July experiences milder lows of 6°C (43°F) and an average of 15°C (60°F), with maximum temperatures reaching 26°C (80°F). However, it is notably wetter, featuring 118 mm (4.7 in) of rainfall over 19 days, and humidity levels are lower at 68%. For more details on July's weather, you can check San Carlos weather in July.

When comparing the weather in December and August, it's clear that the two months exhibit stark contrasts. December typically features cooler temperatures, with a minimum of -4°C (25°F) and an average of 12°C (53°F), while August enjoys milder conditions, with a minimum of 7°C (44°F) and an average of 16°C (60°F). Precipitation also varies significantly; December sees only 5 mm (0.2 in) of rain over just one day, making it quite dry. In contrast, August experiences heavy rainfall, accumulating 152 mm (6.0 in) over 20 days, leading to more humid conditions at 70%. For more detailed insights, you can check San Carlos weather in August.

December weather is characterized by milder temperatures, with averages ranging from a minimum of -4°C (25°F) to a maximum of 23°C (74°F), making it generally cooler than September. In contrast, September experiences slightly warmer conditions with temperatures averaging from 5°C (41°F) to 25°C (77°F). One notable difference is the precipitation levels: December typically sees only 5 mm (0.2 in) of rainfall over just one day, while September can be quite wet, recording 176 mm (6.9 in) across 22 days. Despite December's higher humidity at 88%, September's humidity is still significant at 82%. For more detailed information, check San Carlos weather in September.

When comparing the weather in December to that of October, several notable differences emerge. December tends to be cooler, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 23°C (74°F), while October temperatures are slightly warmer, boasting a range from 2°C (35°F) to 26°C (79°F). Precipitation also varies significantly; December experiences only 5 mm (0.2 in) over just 1 day, whereas October sees a substantial 95 mm (3.7 in) spread over 17 days, making it much wetter. Humidity levels are relatively similar, with December at 88% and October slightly higher at 91%. For more detailed insights into October's weather patterns, you can visit San Carlos weather in October.

In comparing the weather between December and November, December features cooler nighttime temperatures, with a minimum of -4°C (25°F) compared to November's minimum of 0°C (33°F). Both months have similar average temperatures, around 12°C (53°F) for December and 12°C (55°F) for November, but November tends to reach slightly higher maximum temperatures, peaking at 24°C (76°F) against December's maximum of 23°C (74°F). Precipitation levels are notably different, with December seeing just 5 mm (0.2 in) over only 1 day, while November experiences more wet days, with 26 mm (1.0 in) of rainfall over 6 days. Humidity remains relatively stable, with December at 88% and November at 89%. For a more detailed look at November's weather, visit San Carlos weather in November.

Compare San Carlos's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in San Carlos

In December, San Carlos experiences a noticeable shift in weather, with cooler temperatures and a significant drop in precipitation compared to other months. The average temperature settles around 12°C (53°F), making it a refreshing time for outdoor activities. Despite the high humidity hovering at 88%, residents and visitors alike can relish in the mild conditions, as the month sees only a brief burst of rain on just one day. This contrasts sharply with the wetter, warmer spell of preceding months, offering a unique opportunity to enjoy the fresh, crisp air. For those wanting to delve deeper into what to expect year-round, check out San Carlos Climate.