December Weather in Guanajuato, Mexico

Last updated: April 22, 2025

December in Guanajuato, Mexico offers a delightful blend of mild temperatures and low precipitation. With a maximum daytime temperature of 29°C (84°F) and an average of 14°C (58°F), visitors can enjoy pleasantly warm days, while the nights can dip to a crisp 3°C (38°F), making warm attire a must. The month sees minimal rainfall, with just 7 mm (0.3 in) falling over one day, contributing to a relatively dry climate. Coupled with a humidity level of 74%, December in Guanajuato is perfect for outdoor explorations, cultural activities, and enjoying the city's vibrant atmosphere.

December Temperature in Guanajuato

In December, Guanajuato, Mexico, experiences a notable transition in temperatures, signaling the arrival of cooler months. With minimums around 3°C (38°F) and average readings dipping to 14°C (58°F), this period invites a refreshing escape from the sweltering heat of earlier months. Maximum temperatures remain pleasant, peaking around 29°C (84°F), allowing for enjoyable afternoons. Compared to the previous months, where averages soared past 30°C (86°F), December's climate offers a more temperate atmosphere, perfect for exploring the city's vibrant streets and rich history. Overall, the month reflects a gentle shift towards cooler weather while maintaining the charming warmth that makes Guanajuato so appealing.

December Weather in Guanajuato: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Guanajuato, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec596268778291969790786858
Data source: Temperature data for Guanajuato 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 Guanajuato

In December, Guanajuato experiences a slight uptick in precipitation, averaging 7 mm (0.3 in) of rainfall over the course of about 1 day. This modest amount contrasts with the drier months that precede it, such as April, May, and June, which see little to no rainfall. December's precipitation is indicative of a shift towards wetter conditions as the year closes, following the more substantial rains of July through September. Although it doesn't reach the higher levels of earlier months, this slight increase can signal the transition into the cooler, wetter winter months of the region, providing much-needed moisture for the landscape.

December Precipitation Trends in Guanajuato

The chart displays monthly precipitation patterns in Guanajuato, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91311331141213547
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Guanajuato

As winter settles in, December brings a noticeable increase in humidity to Guanajuato, Mexico, with levels rising to 74%. This marks a significant uptick from the lower levels seen in the summer months, where humidity dipped to a refreshing 42% in August. The transition from the dry spring and summer seasons, especially with April and May recording the year's lowest humidity at 56% and 46%, respectively, highlights a gradual buildup of moisture leading into the colder months. By December, humidity begins to align more closely with the values observed at the start of the year, such as 72% in January, suggesting a trend where winter fosters a more humid environment. Overall, the shift in humidity levels throughout the year illustrates the diverse climatic tapestry of Guanajuato, making December a month of refreshing coolness and increased moisture.

December Average Humidity in Guanajuato

This chart illustrates the average monthly humidity levels in Guanajuato, 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.
JanFebMarAprMayJunJulAugSepOctNovDec72%77%67%56%46%48%46%42%52%58%66%74%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Guanajuato

In December, Guanajuato, Mexico experiences a moderate UV Index of 4, making it a great time to enjoy outdoor activities with some sun protection. This index is consistent with the trend observed from January and November, where the UV readings hover around the same level, indicating a more manageable sun exposure. As we move from the heights of summer with extreme indices hitting 11 and 12 from May to July, the winter months usher in a much more comfortable environment for sunlight activities, allowing for longer burn times of up to 30 minutes without significant risk. For those planning to explore the vibrant landscapes of Guanajuato, understanding the UV Index is essential. You can find more information and detailed forecasts at Guanajuato UV Index.

Maximum UV Index Levels in Guanajuato for December

The chart shows the monthly maximum UV Index (UVI) for Guanajuato 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.
JanFebMarAprMayJunJulAugSepOctNovDec469101111121110854
Data source: Guanajuato 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 Guanajuato

December in Guanajuato, Mexico, marks the gradual shift from the robust sunshine of the summer months to the cooler days of winter. While the city basks in 247 hours of sunlight this month—a significant drop from the 373 hours of May—it still enjoys a respectable average compared to earlier months. The trend showcases a steady decline from the highs of June and July, which see nearly 380 hours of sunshine, before tapering off as the year comes to a close. This means that December, with its shorter daylight hours, offers a unique charm, inviting visitors to revel in the warm glow of the sun while experiencing the festive spirit that the city embraces during this time of year.

Monthly Sunshine Duration in Guanajuato: December Highlighted

The December sunshine duration represents the total number of hours Guanajuato 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.
JanFebMarAprMayJunJulAugSepOctNovDec204h251h309h331h373h377h375h358h322h304h264h247h
Data source: Guanajuato December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Guanajuato During December

In Guanajuato, Mexico, the likelihood of sunny weather experiences a notable decline in December, with a sun chance of only 62%. This marks a sharp contrast to the more consistently bright months preceding it, particularly May, when the sun shines 93% of the time. As the year winds down, December's sunny chances start to dip from the 75% seen in November, reflecting a gradual transition towards the cooler season. However, even with reduced sunshine, December still holds a fair share of beautiful days, making it a charming, though slightly cloudier, time to explore the vibrant culture and breathtaking landscapes of this historic city.

Percentage of Sunny Days in December in Guanajuato

The chart illustrates the percentage of sunny days in Guanajuato 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 Guanajuato experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec71%73%84%82%93%77%54%83%85%80%75%62%
Data source: Guanajuato December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Guanajuato in December

As December rolls into Guanajuato, Mexico, daylight persists at 10 hours, mirroring the shorter days experienced in January and November. This month marks the tail end of a gradual decline from the longest days in mid-year June and July, when the city enjoys up to 14 hours of sunlight. The transition is evident as daylight hours steadily increase from 10 hours in January to 11 hours in February, reaching their peak in May with 13 hours. As the year wanes, sunlight retreats once again, reflecting the rhythm of the seasons. Overall, December encapsulates this cyclical shift, bridging the gap between the vibrant summer days and the more subdued winter months.

Average Daylight Hours in Guanajuato for December

The chart illustrates the variation in daylight duration in Guanajuato throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 16m11h 2m12h12h 59m13h 49m14h 14m14h13h 16m12h 18m11h 19m10h 28m10h 2m
Data source: Guanajuato daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Guanajuato

As December settles over Guanajuato, the winds whisper at an average speed of 2.2 m/s (5 mph), mirroring the gentle breezes of late autumn. This month's wind speed remains consistent with November's, creating a serene atmosphere that envelops the historic city. Across the year, wind patterns in Guanajuato reveal subtle fluctuations, with the most noticeable uptick occurring in July, when gusts reach 2.9 m/s (6 mph). However, as the year winds down, the cool December air provides a refreshing contrast, inviting locals and visitors alike to enjoy the charming streets and vibrant culture in a tranquil yet invigorating setting. Overall, December's winds embody the calm that precedes the bustling energy of the new year, offering a moment of peace before the festivities commence.

Average December Wind Speed in Guanajuato

The chart displays monthly wind speed patterns in Guanajuato, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.72.72.72.52.52.92.52.12.42.22.2 m/s
Data source: Guanajuato December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Guanajuato Compares to Other Months

The weather in Guanajuato 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 Guanajuato and find detailed weather information for every month.

December and January in Guanajuato exhibit relatively mild and pleasant weather, though there are some subtle differences. December sees temperatures ranging from a minimum of 3°C (38°F) to a maximum of 29°C (84°F), with an average of 14°C (58°F). The month experiences only 7 mm (0.3 in) of precipitation over one day, coupled with a humidity level of 74%. In comparison, January offers slightly cooler nights with a minimum of 1°C (35°F), while the daily average and maximum temperatures remain hot at 15°C (60°F) and 30°C (86°F), respectively. This month has a bit more rain, with 9 mm (0.3 in) also falling over one day, and humidity levels are marginally lower at 72%. For more detailed information, visit Guanajuato weather in January.

In December, the weather in Guanajuato features a mild range of temperatures, with a minimum of 3°C (38°F) and a maximum of 29°C (84°F), and an average of 14°C (58°F). Precipitation is minimal, with only 7 mm (0.3 in) over just one day, and humidity averages around 74%. In contrast, February showcases slightly warmer temperatures, with a minimum of 2°C (35°F) and a higher maximum of 31°C (89°F), resulting in an average of 17°C (62°F). Precipitation increases to 12 mm (0.5 in) over two days, and humidity rises to 77%. For more detailed information, you can check Guanajuato weather in February.

In December, the weather in Guanajuato is generally mild, with temperatures ranging from a minimum of 3°C (38°F) to a comfortable average of 14°C (58°F), peaking at a maximum of 29°C (84°F). The humidity is relatively high at 74%, and precipitation is minimal, with just 7 mm (0.3 in) expected over a single day.

In contrast, March brings warmer conditions with a minimum temperature of 5°C (41°F) and an average of 20°C (68°F), soaring to a maximum of 37°C (99°F). Although March sees slightly more precipitation at 11 mm (0.4 in) over one day, the humidity is lower at 67%. For more details, check out Guanajuato weather in March.

In December, the weather is relatively mild with minimum temperatures around 3°C (38°F) and an average high of 14°C (58°F), making it a cooler time of year. The month sees a slight increase in humidity at 74% and receives around 7 mm (0.3 inches) of precipitation, typically over one day. In contrast, April brings significantly warmer conditions, with minimum temperatures rising to 9°C (49°F) and average highs soaring to 25°C (77°F), even reaching a maximum of 43°C (110°F) on particularly hot days. The humidity drops to 56% and there is almost no rainfall, with only 3 mm (0.1 inches) recorded over the month. For more detailed insights, you can check Guanajuato weather in April.

December and May present notably contrasting weather conditions. In December, temperatures range from a cool 3°C (38°F) at night to a warm 29°C (84°F) during the day, with an average temperature of 14°C (58°F). Humidity levels are relatively high at 74%, and there is light precipitation, amounting to 7 mm (0.3 in) over just one day. In contrast, May features much warmer temperatures, with a minimum of 12°C (55°F) and a scorching maximum that can reach up to 44°C (111°F), maintaining an average of 28°C (82°F). The month is characterized by arid conditions as it typically sees no rainfall, with humidity dropping to 46%. For a closer look at the warm and dry conditions of May, visit Guanajuato weather in May.

In December, the weather in Guanajuato is characterized by milder temperatures, ranging from a minimum of 3°C (38°F) to a maximum of 29°C (84°F), with an average of 14°C (58°F). This month experiences relatively low precipitation, averaging just 7 mm over a single day, coupled with a higher humidity level of 74%. In contrast, June boasts significantly warmer weather, with temperatures ranging from a minimum of 18°C (64°F) to a scorching maximum of 49°C (121°F) and an average temperature of 33°C (91°F). It is notably drier in June, with only 1 mm of rainfall and humidity dropping to 48%. For more details, you can check out Guanajuato weather in June.

When comparing the weather in December and July, it's clear that July tends to be significantly warmer and more humid than December. In December, temperatures range from a minimum of 3°C (38°F) to an average of 14°C (58°F) and can reach a maximum of 29°C (84°F), with only about 7 mm (0.3 in) of precipitation over just one day. In contrast, July experiences much higher temperatures, with a minimum of 22°C (72°F) and an average of 36°C (97°F), peaking at a scorching 48°C (119°F). Precipitation is slightly higher in July at 14 mm (0.5 in) but occurs over three days. Additionally, December's humidity sits at 74%, significantly more humid than July's 46%, making the latter month feel much hotter overall. For more detailed insights, check out Guanajuato weather in July.

December and August present a striking contrast in weather patterns. In December, temperatures range from a cool minimum of 3°C (38°F) to a pleasant average of 14°C (58°F), peaking at a maximum of 29°C (84°F), accompanied by minimal precipitation of just 7 mm (0.3 in) over one day and a higher humidity level at 74%. Conversely, August experiences significantly warmer weather, with temperatures starting from a minimum of 24°C (76°F) and soaring to an average of 36°C (97°F), reaching extreme highs of 48°C (118°F). Precipitation is slightly higher at 12 mm (0.5 in) across four days, but humidity drops to a more comfortable 42%. For more detailed information, check out the Guanajuato weather in August.

In December, the weather is much cooler with temperatures ranging from a chilly 3°C (38°F) at night to a pleasant 29°C (84°F) during the day, accompanied by relatively high humidity levels at 74%. In contrast, September boasts warmer temperatures, with minimums around 15°C (59°F) and average highs reaching a scorching 32°C (90°F), and extremes that can soar to 49°C (121°F). Additionally, September experiences slightly more rainfall, averaging 13 mm (0.5 in) over two days, while December sees less precipitation at just 7 mm (0.3 in) over one day. For more detailed information, you can check Guanajuato weather in September.

When comparing the weather in December to October, notable differences emerge. December generally features a milder temperature range, with averages around 14°C (58°F) and maximums of 29°C (84°F). In contrast, October presents warmer conditions with much higher minimum and maximum temperatures, ranging from 7°C (46°F) to highs of 43°C (110°F). Additionally, October experiences less humidity at 58% compared to December's 74%. Precipitation is minimal in both months, but October stands out for having no recorded rainy days, whereas December sees about 7 mm over one day. For more specific information, you can refer to Guanajuato weather in October.

December weather is characterized by cooler temperatures compared to November, with a notable drop in minimum temperatures from 7°C (44°F) in November to 3°C (38°F) in December. The average temperature also reflects this trend, decreasing from 20°C (68°F) in November to 14°C (58°F) in December. While November boasts a higher maximum temperature of 35°C (96°F), December's warmest temperature reaches 29°C (84°F). Precipitation is slightly higher in December, with 7 mm (0.3 in) recorded over one day, compared to November's 4 mm (0.1 in) over no rainy days. Humidity levels are also higher in December at 74%, compared to 66% in November. For more detailed information, you can refer to Guanajuato weather in November.

Compare Guanajuato's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Guanajuato

As December sets in, Guanajuato experiences a delightful shift in its weather, offering a refreshing respite from the hotter months. With the average temperature hovering around a mild 14°C, the city enjoys pleasant days and cool nights, inviting visitors to explore its enchanting streets. While the humidity remains relatively high this month, the minimal precipitation makes it a great time for outdoor activities. The contrast between the daytime warmth and the chilly evenings makes December uniquely appealing, setting it apart from the more sweltering summer months. For those interested in more details about what to expect throughout the year, check out Guanajuato Climate.