December Weather in San Carlos, Mexico

Last updated: April 22, 2025

December in San Carlos, Mexico offers a delightful blend of warm days and cool nights. With maximum temperatures reaching up to 32°C (89°F) and an average of 17°C (62°F), visitors can enjoy pleasant outdoor activities. However, evenings can dip to a refreshing 0°C (32°F), inviting cozy attire. The month sees approximately 13 mm (0.5 in) of precipitation over about 3 days, creating a lush, vibrant landscape. The air’s 86% humidity adds to the tropical feel, making December an enchanting time to explore this beautiful coastal destination.

December Temperature in San Carlos

In December, San Carlos, Mexico, showcases a delightful transition as temperatures moderate from the warmth of previous months. With a minimum of 0°C (32°F), the nights can be brisk, while the average temperature hovers around a comfortable 17°C (62°F). Daytime highs can reach up to 32°C (89°F), striking a harmonious balance that invites both relaxation on the beach and exploration of the town. This month encapsulates the essence of a pleasant winter retreat, as the coastal charm melds with mild weather, making it an ideal time to soak in the sun or enjoy outdoor activities without the sweltering heat of summer.

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.
JanFebMarAprMayJunJulAugSepOctNovDec606470757981818277726562
Data source: Temperature data for San Carlos generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in San Carlos

In December, San Carlos enjoys a brief reprieve from the rain, receiving only 13 mm (0.5 in) of precipitation over 3 days. This marks a noticeable decline compared to the wetter months leading up to it, with November seeing 42 mm and September peaking at a significant 223 mm. As the year winds down, the trend of decreasing rainfall is evident, providing a dry yet temperate atmosphere ideal for enjoying the region's natural beauty. December’s minimal precipitation not only signals the onset of winter but also sets the stage for clearer skies and pleasant outdoor activities, making it a distinctive time in San Carlos.

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.
JanFebMarAprMayJunJulAugSepOctNovDec1615444985182166902241014213
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in San Carlos

In December, San Carlos, Mexico experiences a notable spike in humidity, reaching 86%—the highest level of the year. This increase marks a significant shift from the drier months of summer, where humidity dips to its lowest at 67-68% in July and August. As the year draws to a close, the rising moisture levels reflect a transition from the warmth of fall to the cooler, more humid winter months. Observing the pattern, there’s a clear trend of humidity peaking during the winter season, making December feel particularly damp compared to the relatively dry conditions earlier in the year. This seasonal change adds a cozy atmosphere to the region, despite its potential for increased discomfort for some.

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%83%78%81%82%74%68%67%75%78%83%86%
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 6, categorizing it as high with a safe burn time of 25 minutes. This marks a notable decrease from the extreme levels observed during the summer months, where the UV Index consistently peaked at 12. As the year winds down, the lower UV exposure offers a respite for sun-seekers compared to earlier months like March and April, which saw indices as high as 11. While the intensity is reduced, it's still important to stay sun-safe during December. For further insights into UV exposure 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.
JanFebMarAprMayJunJulAugSepOctNovDec79111212121212121086
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

December in San Carlos, Mexico, offers a delightful end to the year with 269 hours of sunshine, providing a warm and inviting atmosphere for holiday revelers. This month sees a gradual decline in sunlight compared to the summer peak of 340 hours in August, yet still holds a charming glow that outshines the chillier months of January and February. As the year transitions into winter, December’s sun is a reminder of the region's exceptional climate, bridging the gap between the bright summer days and the cooler months ahead. This consistent availability of sunshine not only boosts the spirits of locals and tourists alike but also highlights San Carlos as a year-round destination for sun-seekers.

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.
JanFebMarAprMayJunJulAugSepOctNovDec206h249h290h294h328h331h335h340h293h288h263h269h
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, enjoys a noteworthy 63% chance of sunny weather, marking it as one of the brighter months of the year. This trend of increasing sunshine is evident as we transition from late fall, with November boasting a 58% chance, to the end of the year. The data suggests that while the summer months experience a dip, with July at a low 36%, December stands out with a promising increase in sunny days. As we look ahead, December's weather offers an inviting contrast to the preceding months, making it an attractive time for those seeking warm sunshine amid the winter chill.

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.
JanFebMarAprMayJunJulAugSepOctNovDec49%60%59%51%50%43%36%62%40%56%58%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, the daylight duration experiences a rhythmic ebb and flow throughout the year, peaking in the summer months before gently receding. December, like its counterparts in January and November, offers 10 hours of daylight, marking it as a time of shorter days that invite cozy reflections and vibrant sunsets. As the year progresses from the winter months into spring, daylight gradually lengthens, reaching a delightful 13 hours during the lush summer of May through July. Following this sunny peak, daylight begins to wane as the seasons transition, returning to a more subdued 12 hours in August and September, then tapering back to 11 hours in October. This cyclical pattern of daylight not only enriches the landscape but also enhances the charm of life in San Carlos, where each season brings its own unique glow.

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 47m11h 19m12h 1m12h 44m13h 20m13h 37m13h 27m12h 56m12h 15m11h 32m10h 55m10h 37m
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 settles in San Carlos, Mexico, the wind takes on a gentle yet refreshing character, with an average speed of 3.3 m/s (7 mph). This marks a slight uptick from the preceding months, reflecting a subtle return to the steadier breezes typical of late autumn. After a gradual decline throughout the summer, where wind speeds dipped to 2.6 m/s (6 mph) in September, the end of the year brings a pleasant consistency, reminiscent of the early months when the winds were notably stronger. Overall, December's breezes promise to invigorate, inviting both locals and visitors to enjoy the stunning coastal scenery in a refreshingly breezy atmosphere.

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.
JanFebMarAprMayJunJulAugSepOctNovDec3.23.63.83.73.83.13.03.32.62.73.03.3 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.

In December, temperatures in San Carlos range from a minimum of 0°C (32°F) to a maximum of 32°C (89°F), with an average of 17°C (62°F). The month experiences relatively low precipitation, totaling 13 mm (0.5 in) over about three days, and the humidity is quite high at 86%. In contrast, January sees a slight dip in minimum temperatures, dropping to -2°C (28°F), while the average temperature is comparable at 16°C (60°F). Notably, the maximum temperature can reach up to 34°C (93°F), and there is slightly more precipitation at 16 mm (0.6 in) across four days, with humidity slightly lower at 84%. For more details on January weather, visit San Carlos weather in January.

In December, temperatures in San Carlos range from a minimum of 0°C (32°F) to a maximum of 32°C (89°F), with an average of 17°C (62°F). The month typically experiences 13 mm (0.5 in) of precipitation over 3 days, accompanied by high humidity at 86%. In contrast, February sees slightly colder nights with a minimum of -5°C (24°F) but warmer daytime highs reaching up to 35°C (96°F) and an average temperature of 18°C (64°F). Precipitation increases marginally to 14 mm (0.6 in) over the same 3 days, while humidity remains relatively low at 83%. For more detailed information about February weather, you can visit San Carlos weather in February.

In December, temperatures range from a chilly 0°C (32°F) at night to a warm 32°C (89°F) during the day, with an average of 17°C (62°F). The month is relatively dry, experiencing only 13 mm (0.5 in) of precipitation over three days, and has a high humidity level of 86%. In contrast, March sees milder nights with temperatures starting at 3°C (38°F) and reaching a maximum of 37°C (100°F) during the day, averaging 21°C (70°F). Rainfall increases significantly to 44 mm (1.7 in) spread over six days, and humidity drops to 78%. For more details, you can check San Carlos weather in March.

In December, the weather is cooler, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 32°C (89°F), and an average of 17°C (62°F). The month experiences minimal precipitation at 13 mm (0.5 in) over about 3 days, accompanied by high humidity levels of 86%. In contrast, April brings much warmer conditions, with temperatures ranging from a minimum of 8°C (47°F) to a scorching maximum of 40°C (103°F), averaging around 24°C (75°F). Rainfall increases significantly to 49 mm (1.9 in) across 7 days, and humidity remains relatively lower at 81%. For more detailed information, check San Carlos weather in April.

In December, temperatures in San Carlos range from a chilly 0°C (32°F) at night to a warm 32°C (89°F) during the day, with an average of 17°C (62°F). The month sees relatively low precipitation, totaling just 13 mm (0.5 in) over about 3 rainy days, and humidity levels are high at 86%. In contrast, May experiences much warmer weather, with minimum temperatures starting at 13°C (57°F) and soaring to a maximum of 41°C (107°F), averaging around 26°C (80°F). However, May is significantly wetter, with 85 mm (3.3 in) of rain across approximately 12 days, while humidity remains slightly lower at 82%. For more details about the weather in May, you can check San Carlos weather in May.

December and June exhibit remarkable contrasts in weather. In December, temperatures range from a brisk minimum of 0°C (32°F) to a comfortable average of 17°C (62°F), occasionally peaking at 32°C (89°F). The month sees relatively low precipitation, with only 13 mm (0.5 in) expected over about three days, and a high humidity level of 86%. In stark contrast, June experiences a much warmer climate, with minimum temperatures starting at 19°C (66°F) and averaging 27°C (81°F), reaching heights of 39°C (103°F). This month is also markedly wetter, accumulating 182 mm (7.2 in) of rainfall across approximately 16 days, coupled with a lower humidity level of 74%. For a closer look at typical conditions, check out San Carlos weather in June.

When comparing the weather in December to July, one can observe striking differences. December typically offers cooler temperatures, with daily averages around 17°C (62°F) and a maximum of 32°C (89°F), but it includes chilly nights with a minimum of 0°C (32°F). In contrast, July is much warmer, featuring an average temperature of 27°C (81°F) and highs reaching up to 38°C (101°F), making it the hottest month of the year. Additionally, July experiences significantly more rainfall, averaging 166 mm (6.5 in) over 14 days, while December has only 13 mm (0.5 in) scattered across about 3 days. Humidity levels also differ, with December at a high 86% compared to July's 68%. For a more detailed look at July's climate, you can visit San Carlos weather in July.

The weather in December and August presents a stark contrast in temperature and precipitation patterns. In December, temperatures range from a cool minimum of 0°C (32°F) to an average of 17°C (62°F), peaking at 32°C (89°F). The month sees limited rainfall, with only 13 mm (0.5 in) over three days and high humidity at 86%. In contrast, August boasts much warmer conditions, with minimum temperatures starting at 20°C (69°F), an average of 28°C (82°F), and a maximum reaching up to 38°C (100°F). It's also significantly wetter, receiving about 90 mm (3.6 in) of rain over 15 days, coupled with lower humidity levels at 67%. For further details, check out San Carlos weather in August.

The weather in December is typically milder compared to September, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 32°C (89°F), and an average of 17°C (62°F). In contrast, September experiences warmer conditions, with temperatures between 16°C (61°F) and a sweltering 37°C (99°F), averaging 25°C (78°F). Additionally, December is significantly drier, receiving only 13 mm (0.5 in) of precipitation over just 3 days, whereas September sees a substantial 223 mm (8.8 in) of rainfall across 18 days. Despite September's higher humidity at 75%, December's humidity is elevated at 86%, often resulting in a more comfortable atmosphere during the cooler month. For more detailed information about September weather, you can visit San Carlos weather in September.

In comparing December and October weather, December features a narrower temperature range with minimums dipping to 0°C (32°F) and maximums reaching 32°C (89°F), averaging at 17°C (62°F). In contrast, October is generally warmer, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 34°C (94°F), averaging 22°C (72°F). Additionally, October experiences significantly higher precipitation at 101 mm (4.0 in) over 12 days, while December is much drier with only 13 mm (0.5 in) over 3 days. Humidity levels also differ, as December retains a higher humidity at 86% compared to October's 78%. For a more detailed look, you can check San Carlos weather in October.

In comparing the weather of December to November, December experiences a wider temperature range with a minimum of 0°C (32°F) to a maximum of 32°C (89°F), while November has slightly higher minimum and average temperatures, ranging from 2°C (37°F) to 31°C (88°F). Precipitation also differs significantly, with November receiving 42 mm (1.7 in) over five days, compared to December's much lower 13 mm (0.5 in) over just three days. Additionally, December has a slightly higher humidity level at 86%, compared to November's 83%. For more details on the weather patterns in November, you can visit 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 sweeps in, San Carlos transforms into a cozy oasis, where the temperatures dip compared to the sweltering summer months. With crisp nights and mild days, this month offers a refreshing average temperature that encourages outdoor enjoyment. While the humidity remains notably high, the overall precipitation is minimal, allowing residents and visitors to relish in mostly dry conditions. This enchanting blend of mild warmth and cool breezes creates a distinct charm that's a welcome change from the hotter months. To learn more about how these seasonal shifts affect the region, visit San Carlos Climate.