December Weather in San Carlos, Mexico

Last updated: April 22, 2025

December in San Carlos, Mexico offers a pleasant climate characterized by a maximum temperature of 29°C (85°F) and a comfortable average of 18°C (66°F). With minimum temperatures dipping to 7°C (45°F), visitors can enjoy mild evenings. The month sees minimal rainfall, accumulating only 8 mm (0.3 in) across just one day, allowing for ample opportunities to explore the stunning coastal scenery. Humidity levels hover around 72%, creating a refreshing atmosphere ideal for outdoor adventures.

December Temperature in San Carlos

In December, temperatures in San Carlos, Mexico, begin to shift as winter approaches, offering a delightful respite from the heat of earlier months. The minimum temperature hovers around 7°C (45°F) at night, ensuring cozy evenings, while daytime welcomes an average of 18°C (66°F), inviting visitors to enjoy outdoor activities. The maximum temperature can reach 29°C (85°F), allowing for warm, sunny days perfect for sunbathing or exploring the picturesque coastline. This trend of cooler nights and pleasantly warm days makes December an ideal time to experience the charm of San Carlos, where the weather is neither too hot nor too cold, striking the perfect balance for holiday adventures.

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.
JanFebMarAprMayJunJulAugSepOctNovDec636468747986899087817365
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 experiences a modest precipitation level of 8 mm (0.3 in), falling over just one day. This amount is part of a generally dry season, where rainfall has been scarce since April. As the year draws to a close, December’s precipitation is slightly higher than February's meager 8 mm yet less than the early autumn peaks, notably 53 mm in September. Interestingly, the rainy season's intensity softens after the summer months, with December serving as a transition towards the drier months ahead. This pattern underscores the region's typical climatic cycle of wet followed by progressively arid months, leading to a somewhat predictable yet inviting climate for visitors during the holiday season.

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.
JanFebMarAprMayJunJulAugSepOctNovDec128120057195417108
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, humidity levels in San Carlos, Mexico remain notably high, sitting at 72%. This month reflects a consistent pattern seen throughout the year, where humidity tends to peak during the late summer and early fall, with August and September registering the highest levels at 73% and 76%, respectively. As we transition from the dry months of April and May, which experience the lowest humidity at 51%, December's figures indicate a slight resurgence in moisture, paralleling the trends observed in October and November. This seasonal humidity showcases the coastal climate's influence, providing a balmy atmosphere as the year comes to a close, perfect for enjoying the region's vibrant natural beauty.

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.
JanFebMarAprMayJunJulAugSepOctNovDec71%66%59%52%51%51%61%73%76%72%72%72%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Carlos

December in San Carlos, Mexico, marks a transition to milder sun exposure, as the UV Index drops to 5. This moderate level of UV radiation means you'll have a more comfortable burn time of 30 minutes, allowing for longer outdoor enjoyment compared to the preceding months. While the peak months from April to September displayed extreme levels, with indexes soaring to 12, December offers a welcome reprieve. This trend illustrates a gradual decline in UV intensity as winter approaches, making it an ideal time for beachgoers and outdoor enthusiasts to soak in the sun's rays while still being mindful of skin protection. For more details on UV levels throughout the year, 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.
JanFebMarAprMayJunJulAugSepOctNovDec589111212121111965
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

In San Carlos, Mexico, December offers a delightful glimpse of sunshine, with an average of 262 hours illuminating the month. While this is a slight dip from the sun-drenched heights of May (366 hours) and April (328 hours), December still bask in more sunlight than the chilly winter months for many, promising cheerful days filled with warmth. The gradual decrease of daylight hours, seen as we move from the vibrant summer months of June through August, reflects the transition into the quieter winter season. Despite the cooler temperatures, the lingering rays of December light create a perfect backdrop for enjoying leisurely beach strolls and festive celebrations, ensuring San Carlos remains a sun-kissed escape during the holiday season.

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.
JanFebMarAprMayJunJulAugSepOctNovDec217h251h298h328h366h363h352h337h310h301h263h262h
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

As December rolls in, San Carlos, Mexico, previews the end of the year with a 57% chance of sunny weather. This marks a noticeable dip from the sun-soaked heights of October, which boasts an impressive 90% sunshine likelihood. The trend for the month shows a steady decrease in clear skies as the region shifts from the vibrant warmth of summer, where the probabilities are notably higher in May and June at 82%. However, December still stands strong compared to the early months of the year, such as January's 75% and November's 71%. While the likelihood of sunshine may taper off, the charm of San Carlos remains unwavering, making it a delightful holiday destination even during this transitional month.

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.
JanFebMarAprMayJunJulAugSepOctNovDec75%65%71%74%82%82%44%57%69%90%71%57%
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

As December unfolds in San Carlos, Mexico, the region experiences about 10 hours of daylight, mirroring the sunlight of January and November. This reduction in daylight is part of a rhythmic cycle, where daylight duration peaks in the summer months of May through August, reaching almost 13 hours. Following this peak, daylight begins to taper off through September and October, only to stabilize again at 10 hours during the winter months at year’s end. This gradual ebb and flow of sunlight not only marks the changing seasons but also sets the perfect backdrop for enjoying the serene beauty of San Carlos as the year concludes.

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.
JanFebMarAprMayJunJulAugSepOctNovDec10h 35m11h 12m12h 1m12h 50m13h 32m13h 52m13h 41m13h 4m12h 16m11h 27m10h 44m10h 23m
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 descends upon San Carlos, Mexico, the winds take on a gentle character, averaging 3.1 m/s (7 mph). This marks a slight increase from the preceding months, particularly after the low of 2.5 m/s in November, hinting at a subtle resurgence in breezy conditions as the year comes to a close. Throughout the year, wind speeds exhibit a varied rhythm, peaking in March and June at 4.1 m/s and 4.0 m/s respectively, reflecting the dynamic shifts in seasonal weather patterns. Notably, the summer months maintain a consistent breeze, while the transition into winter brings a calming softness. This December wind carries with it a sense of tranquility, inviting residents and visitors alike to embrace the serene beauty of San Carlos.

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.
JanFebMarAprMayJunJulAugSepOctNovDec3.63.44.13.73.14.03.83.63.03.52.53.1 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 in San Carlos exhibit quite similar weather patterns, but some subtle differences are present. December tends to be slightly warmer, with average temperatures reaching 18°C (66°F) compared to January's average of 17°C (64°F). The maximum temperature in December also edges out at 29°C (85°F), while January's maximum is a degree lower at 28°C (83°F). Precipitation is slightly higher in January, with 12 mm (0.5 in) compared to December's 8 mm (0.3 in), though both months have only one day of rainfall. In terms of humidity, the difference is minimal, with December at 72% and January at 71%. For more details, you can check San Carlos weather in January.

In December, the weather features a minimum temperature of 7°C (45°F) and an average of 18°C (66°F), while maximum temperatures reach up to 29°C (85°F). The month experiences low precipitation, with just 8 mm (0.3 in) over the course of 1 day and a relative humidity of 72%. In contrast, February sees similar minimum temperatures at 7°C (45°F) and maintains an average temperature of 18°C (65°F). Notably, max temperatures slightly increase to 30°C (85°F), but precipitation remains the same at 8 mm (0.3 in) and over just 1 day, with a decrease in humidity to 66%. For more details on February weather, check out San Carlos weather in February.

In December, the weather typically features a minimum temperature of 7°C (45°F) and an average of 18°C (66°F), soaring up to a maximum of 29°C (85°F). With only 8 mm (0.3 in) of precipitation over just one day, the humidity hovers around 72%, creating a warm but slightly damp atmosphere. In contrast, March sees slightly milder temperatures, with a minimum of 10°C (50°F) and an average of 20°C (68°F), reaching up to 31°C (89°F) at its peak. Precipitation increases slightly to 12 mm (0.5 in) over the same one day, but the humidity drops to 58%, resulting in a drier feel. For more details on March weather, you can explore San Carlos weather in March.

In December, the weather features a mild temperature range with a minimum of 7°C (45°F) and a maximum of 29°C (85°F), providing an average of 18°C (66°F). The month experiences some humidity at 72% and a light amount of precipitation, totaling 8 mm (0.3 inches) over just 1 day. In contrast, April brings notably warmer weather with minimum temperatures of 13°C (56°F) and soaring maximums of 35°C (96°F), averaging around 23°C (74°F). Remarkably, April enjoys completely dry conditions with no recorded precipitation, and the humidity decreases to 52%. For more details, you can check San Carlos weather in April.

December and May present quite different weather experiences. In December, temperatures range from a cool 7°C (45°F) at night to a warm 29°C (85°F) during the day, with an average of 18°C (66°F). This month sees a bit of rainfall, with about 8 mm (0.3 in) of precipitation over just one day, accompanying a relatively high humidity level of 72%. In contrast, May boasts much warmer temperatures, starting at a minimum of 17°C (62°F) and reaching up to a scorching 38°C (100°F), with an average of 26°C (79°F). It's also incredibly dry, with no recorded precipitation, leading to a more comfortable humidity of 51%. For more details, check out San Carlos weather in May.

In December, the weather is milder, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 29°C (85°F) and an average of 18°C (66°F). It experiences some humidity at 72% and light precipitation, typically around 8 mm (0.3 in) over just one day. In contrast, June brings much warmer conditions, with temperatures soaring from a minimum of 21°C (69°F) to a sweltering maximum of 38°C (101°F), averaging around 30°C (86°F). The humidity drops to 51%, and June typically sees no rain, receiving only 5 mm (0.2 in) throughout the month. For those interested in more detailed conditions, check San Carlos weather in June.

December and July showcase stark contrasts in weather conditions. December offers a mild climate with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 29°C (85°F), accompanied by a comfortable average of 18°C (66°F) and relatively low humidity at 72%. In contrast, July experiences much higher temperatures, with minimums of 26°C (79°F) and maximums soaring up to 39°C (103°F), averaging around 32°C (90°F). Despite both months receiving similar precipitation (8 mm in December and 7 mm in July), July is marked by increased humidity at 60% and more days of rain, occurring over two days compared to just one in December. For more details, you can check the San Carlos weather in July.

The weather in December exhibits milder temperatures, ranging from a minimum of 7°C (45°F) to a maximum of 29°C (85°F), with an average of 18°C (66°F). In contrast, August is significantly warmer, with temperatures soaring from a minimum of 26°C (79°F) to a peak of 38°C (102°F) and an average of 32°C (90°F). Additionally, December experiences minimal precipitation, with only 8 mm (0.3 in) falling over just one day, while August sees more rainfall at 19 mm (0.7 in) spread across four days. The humidity levels are quite similar, with December at 72% and August slightly higher at 73%. For more details on August's weather, you can visit San Carlos weather in August.

When comparing the weather in December and September, notable differences emerge. December offers cooler temperatures, with a minimum of 7°C (45°F) and an average high of 29°C (85°F), making it more comfortable. In contrast, September experiences significantly warmer weather, with temperatures ranging from a minimum of 20°C (68°F) to a scorching maximum of 42°C (107°F). Additionally, September sees much higher precipitation, averaging 53 mm (2.1 in) over six days, compared to December's minimal 8 mm (0.3 in) over just one day. Humidity levels are also slightly higher in September at 76% versus December's 72%. For more detailed information, you can visit San Carlos weather in September.

In comparing the weather between December and October, we can see distinct differences in temperature and precipitation patterns. December offers a milder temperature range, with minimums around 7°C (45°F) and maximums reaching up to 29°C (85°F), while the average temperature is a comfortable 18°C (66°F). In contrast, October sees significantly warmer conditions, with minimums at 15°C (59°F), maximums soaring to 38°C (101°F), and an average of 27°C (82°F). Precipitation is light in both months, but October experiences a slightly higher total of 17 mm (0.7 in) compared to December's 8 mm (0.3 in). Despite the differences in temperature, both months share a relative humidity level of 72%. For more detailed information on October’s climate specifics, you can refer to San Carlos weather in October.

Comparing the weather in December to November reveals notable differences. In December, the temperatures are milder, with a minimum of 7°C (45°F) and an average maximum of 29°C (85°F), while November boasts higher temperatures, with a minimum of 12°C (54°F) and an average maximum of 35°C (96°F). Precipitation is slightly lower in December at 8 mm (0.3 in) compared to November's 10 mm (0.4 in), but both months experience the same number of rainy days—just one. Despite the cooler conditions in December, humidity remains constant at 72% in both months. For more details, check out San Carlos weather in November.

Compare San Carlos's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in San Carlos

As December rolls into San Carlos, the weather takes on a milder disposition, offering a welcome break from the hotter months. With an average temperature of 18°C (66°F), days are pleasantly warm, peaking at a maximum of 29°C (85°F), while nights cool down to a refreshing 7°C (45°F). This month also sees significantly less rainfall, with only about 8 mm (0.3 in) of precipitation over just one day, contributing to a comfortable humidity level of 72%. Compared to the sweltering summer months, December provides the perfect blend of warmth and coolness, making it an ideal time for outdoor activities. For a deeper look into the seasonal variations and trends in weather patterns, be sure to check out San Carlos Climate.