December Weather in Mazatlan, Mexico

Last updated: April 22, 2025

Experience Mazatlán's vibrant December weather, where the tropical charm of the Pacific coast comes alive. With maximum temperatures reaching 28°C (82°F) and an average of 23°C (73°F), the warmth invites you to bask in the sun. Nights cool down to a comfortable 17°C (63°F), perfect for evening strolls by the beach. This month sees a modest precipitation amount of 14 mm (0.6 in), with just one rainy day, allowing ample opportunity to explore the stunning surroundings. Coupled with a humidity level of 78%, the air feels refreshingly pleasant, making December an ideal time to indulge in Mazatlán's coastal beauty and vibrant culture.

December Temperature in Mazatlan

In Mazatlán, Mexico, December ushers in a delightful transition into the dry winter season, characterized by mild and pleasant temperatures. With a minimum temperature settling around 17°C (63°F) and a comfortable average of 23°C (73°F), days are pleasantly warm without being sweltering. Maximum temperatures reach up to 28°C (82°F), making it an ideal escape from colder climates. This month marks a notable shift from the balmy summer months, where the heat can peak at 32°C (89°F), providing a refreshing change for visitors. As the year wraps up, December in Mazatlán offers a perfect blend of warmth and comfort, encouraging outdoor adventures and leisurely strolls along the beautiful coastline.

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

The chart illustrates December temperature patterns in Mazatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec717070737781848483837973
Data source: Temperature data for Mazatlan 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 Mazatlan

In Mazatlán, Mexico, December marks a gradual return to cooler, drier weather after the intense rainy season that peaks in August. While the month sees an average precipitation of 14 mm (0.6 in) over just 1 day, this is a slight drop from the preceding months, which are characterized by heavier rainfall. Notably, the transition from the summer monsoon is evident as the city experiences minimal rain compared to the 61 mm in July and a staggering 266 mm in August. As the year winds down, December's brief and gentle showers serve as a reminder of the vibrant wet season, while paving the way for clear skies and sunnier days ahead.

December Precipitation Trends in Mazatlan

The chart displays monthly precipitation patterns in Mazatlan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec12250002161266165771614
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mazatlan

In Mazatlán, Mexico, December sees a humidity level of 78%, marking a slight increase from the previous month. This month reflects a trend of heightened humidity in the latter part of the year, continuing from November's 77%. The humidity begins to climb significantly during the summer months, peaking in July and August at 82% and 83% respectively, before tapering off as the year closes. As we transition from December to January, the humidity remains relatively high—indicating that while winter may be cooler, the air retains a tropical feel, a hallmark of the region's coastal climate. This consistent moisture contributes to Mazatlán's lush landscapes and vibrant marine life, making it a delightful destination year-round.

December Average Humidity in Mazatlan

This chart illustrates the average monthly humidity levels in Mazatlan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec74%66%61%56%61%73%82%83%83%79%77%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mazatlan

December in Mazatlán, Mexico, marks a noticeable shift in the UV Index, dropping to 6, which falls into the high exposure category. Compared to the extreme levels of summer, with indices peaking at 13 in April and May, December offers a more moderate sun experience with a burn time of 25 minutes. This trend reflects a gradual decline in UV intensity as the year comes to a close, contrasting sharply with the preceding months of relentless sun. While the UV Index remains high enough to necessitate sun protection, December provides a more comfortable environment for outdoor activities. For more detailed information on UV levels throughout the year, visit Mazatlan UV Index.

Maximum UV Index Levels in Mazatlan for December

The chart shows the monthly maximum UV Index (UVI) for Mazatlan 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.
JanFebMarAprMayJunJulAugSepOctNovDec710111313121212121086
Data source: Mazatlan 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 Mazatlan

December in Mazatlán, Mexico, offers a warm embrace as the year draws to a close, with 275 hours of sunshine illuminating the vibrant coastline. While this marks a slight dip from the sun-soaked highs of early summer months like May, which boasts 355 hours, it still provides ample opportunity for leisurely beach days and festive gatherings. The trend reveals a gradual decline in sunshine hours from the year's peak in late spring, settling into a comfortable, mild winter climate that invites both relaxation and exploration. As the year transitions into January, the sunshine hours dip further to 222, making December a delightful moment to soak in the sun before the New Year begins.

Monthly Sunshine Duration in Mazatlan: December Highlighted

The December sunshine duration represents the total number of hours Mazatlan 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.
JanFebMarAprMayJunJulAugSepOctNovDec222h261h316h326h355h325h324h292h275h292h276h275h
Data source: Mazatlan December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mazatlan During December

When considering the likelihood of sunny weather in Mazatlán, Mexico, December offers a 56% chance of sunshine, which places it in the middle range of the year. Notably, this month experiences a gradual decline from the vibrant conditions of previous months; for example, October boasts a robust 68% chance, while November maintains a respectable 61%. As we transition into winter, the sun's presence becomes less frequent, yet December still promises enjoyable weather compared to the sweltering summer months, where the chances dip significantly—especially with August hitting a mere 23% chance of sun. Overall, December in Mazatlán provides a balanced blend of warmth and mild weather, making it a delightful time to visit despite the slight dip in sunny days.

Percentage of Sunny Days in December in Mazatlan

The chart illustrates the percentage of sunny days in Mazatlan 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 Mazatlan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec60%62%57%66%80%51%41%23%39%68%61%56%
Data source: Mazatlan December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mazatlan in December

In Mazatlán, Mexico, the daylight duration shifts through the year, creating a rhythm that captivates both residents and visitors. As December arrives, the daylight lasts approximately 10 hours, mirroring the shorter days of January and November. Notably, the lengthening days begin in February, peaking at 13 hours in the summer months of May through July, offering abundant sunshine for beach lovers and outdoor enthusiasts. As the year draws to a close, the gradual decline back to 10 hours in December signals a cozy transition into the winter season, setting the stage for festive celebrations under the warm Mexican sun. This cyclical pattern of daylight not only enhances the scenic beauty but also influences the vibrant lifestyle that makes Mazatlán a charming destination year-round.

Average Daylight Hours in Mazatlan for December

The chart illustrates the variation in daylight duration in Mazatlan throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 52m11h 22m12h 1m12h 42m13h 15m13h 32m13h 23m12h 53m12h 14m11h 34m10h 59m10h 42m
Data source: Mazatlan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Mazatlan

As December unfolds in Mazatlán, Mexico, the coastal charm is complemented by a gentle breeze, with an average wind speed of 2.9 m/s (6 mph). This modest yet constant airflow marks a subtle transition from the brisker winds seen earlier in the year, particularly in March, where gusts reach up to 3.5 m/s (8 mph). In the cooler months, the wind tends to calm down slightly, creating a serene atmosphere ideal for leisurely strolls along the beach. Throughout the year, wind speeds have generally hovered between 2.5 m/s to 3.5 m/s, showcasing a predictable rhythm that contributes to Mazatlán's inviting climate. As the year concludes, the gentle December winds offer a perfect backdrop for reflecting on the year past while soaking in the vibrant coastal scenery.

Average December Wind Speed in Mazatlan

The chart displays monthly wind speed patterns in Mazatlan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.32.73.52.62.83.22.52.62.22.72.82.9 m/s
Data source: Mazatlan December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Mazatlan Compares to Other Months

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

In December, the weather in Mazatlán is characterized by slightly warmer temperatures, with a minimum of 17°C (63°F) and an average of 23°C (73°F), peaking at 28°C (82°F). The month sees about 14 mm (0.6 in) of precipitation over one day and boasts a humidity level of 78%. In contrast, January brings cooler conditions, with minimum temperatures dropping to 14°C (57°F) and an average of 21°C (71°F), reaching a maximum of 27°C (81°F). January is notably drier, with only 12 mm (0.5 in) of precipitation and no rainy days, accompanied by a slightly lower humidity level of 74%. For more detailed information, you can explore Mazatlan weather in January.

In December, the weather is typically warm, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 28°C (82°F) and an average of 23°C (73°F). The month sees limited rainfall, totaling only 14 mm (0.6 in) over just one day, along with higher humidity at 78%. In contrast, February offers slightly cooler conditions, with temperatures dropping to a minimum of 16°C (61°F) and a maximum of 27°C (80°F), resulting in an average temperature of 21°C (70°F). However, February experiences more precipitation, totaling 25 mm (1.0 in) also over one day, while humidity decreases to 66%. For more detailed insights, you can check out Mazatlan weather in February.

In December, the weather is generally warm, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 28°C (82°F) and an average of 23°C (73°F). This month experiences a slight amount of precipitation, averaging 14 mm (0.6 in) over just one day, along with higher humidity levels at 78%. In contrast, March offers slightly cooler temperatures, with a minimum of 16°C (60°F), an average of 21°C (70°F), and a maximum of 27°C (80°F). Notably, March is dry, with no recorded precipitation and lower humidity at 61%. For a deeper dive into specific March weather patterns, you can check Mazatlan weather in March.

In December, the weather features a pleasant temperature range, with minimums around 17°C (63°F) and maximums reaching up to 28°C (82°F), accompanied by a moderate level of humidity at 78%. This month also sees some rainfall, with an average precipitation of 14 mm (0.6 in) over a single day. In contrast, April mirrors the minimum temperature of 17°C (63°F) and maintains a similar average at 23°C (73°F), but it boasts slightly cooler maximums of 27°C (80°F). Notably, April enjoys a dry spell, with no precipitation recorded and significantly lower humidity at 56%. For more detailed insights on the conditions during this time, check out Mazatlan weather in April.

December and May showcase distinct weather patterns in Mazatlán. In December, temperatures range from a minimum of 17°C (63°F) to a maximum of 28°C (82°F), with an average of 23°C (73°F). This month experiences light precipitation, averaging 14 mm (0.6 in) over a single rainy day, alongside a higher humidity level of 78%. In contrast, May typically welcomes warmer conditions, with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 29°C (84°F), averaging 25°C (77°F). Remarkably, May boasts no precipitation and a lower humidity of 61%, offering a drier and slightly more comfortable climate. For a detailed look at the weather in this month, visit Mazatlan weather in May.

In December, the weather in Mazatlan is generally milder, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 28°C (82°F), while the average temperature sits comfortably at 23°C (73°F). This month sees relatively low precipitation, averaging just 14 mm (0.6 in) over a single day, along with a humidity level of 78%. In contrast, June brings warmer temperatures, with a minimum of 23°C (74°F), an average of 27°C (81°F), and a maximum of 31°C (88°F). Precipitation slightly increases to 21 mm (0.8 in) over two days, while humidity dips to 73%. For more specific insights about June weather, you can refer to Mazatlan weather in June.

In December, the weather is notably milder, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 28°C (82°F), and an average of 23°C (73°F). This month experiences only about 14 mm (0.6 in) of precipitation over just one day, coupled with a humidity of 78%. In contrast, July brings much warmer conditions, featuring a minimum temperature of 25°C (77°F) and averaging 29°C (84°F), while reaching highs of 32°C (89°F). Rainfall increases significantly to 61 mm (2.4 in) over about nine days, with humidity slightly rising to 82%. For more detailed insights, check out Mazatlan weather in July.

When comparing December and August weather, it’s evident that August is significantly warmer and wetter. December features a more moderate temperature range with minimums around 17°C (63°F) and maximums reaching 28°C (82°F), coupled with low precipitation at just 14 mm (0.6 in) over a single day and humidity levels at 78%. In contrast, August is considerably hotter, with temperatures ranging from a minimum of 25°C (78°F) to a maximum of 32°C (90°F), and experiences heavy rainfall, totaling 266 mm (10.5 in) over 19 days, accompanied by higher humidity at 83%. For a detailed look at August conditions, visit Mazatlan weather in August.

When comparing the weather in December and September, notable contrasts become evident. December enjoys milder temperatures, with a minimum of 17°C (63°F), an average of 23°C (73°F), and a maximum of 28°C (82°F). This month typically sees less precipitation, averaging just 14 mm (0.6 in) over a single rainy day, and the humidity stands at 78%. In contrast, September is characterized by significantly warmer temperatures, with a minimum of 25°C (78°F), an average of 28°C (83°F), and a maximum of 32°C (89°F). This month is also much wetter, experiencing around 165 mm (6.5 in) of rainfall over 20 days, with humidity climbing to 83%. For a more detailed look at September conditions, you can visit Mazatlan weather in September.

In December, the weather exhibits milder temperature ranges, with minimums around 17°C (63°F) and maximums peaking at 28°C (82°F), making it notably cooler compared to October, which experiences minimums of 23°C (74°F) and maximums reaching 32°C (89°F). While December boasts only 14 mm (0.6 in) of precipitation over just one day, October is significantly wetter with 77 mm (3.0 in) spread across eight days. Despite both months having a consistent humidity level of 78%, the overall atmosphere in December is more temperate and less rainy. For more details, you can refer to Mazatlan weather in October.

In December, the weather shows a slight cooling trend compared to November, with minimum temperatures dropping from 20°C (69°F) to 17°C (63°F) and average temperatures decreasing from 26°C (79°F) to 23°C (73°F). While both months experience similar precipitation levels—14 mm (0.6 in) in December and 15 mm (0.6 in) in November—December tends to bring slightly higher humidity at 78% compared to November's 77%. Despite the minor differences, both months offer a warm and pleasantly tropical climate. For more details, you can explore Mazatlan weather in November.

Compare Mazatlan's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Mazatlan

In December, Mazatlán experiences a delightful shift as the warmth of earlier months settles into more comfortable averages, with temperatures generally hovering around a pleasant 23°C (73°F). This month stands out for its minimal rainfall, with just a single day of precipitation, ensuring plenty of sunshine for outdoor activities. The humidity remains a bit elevated, yet it's typically more bearable compared to the summer months, making it an ideal time to explore the city's vibrant culture and stunning beaches. If you're considering a trip, December offers a refreshing escape, perfectly suited for both relaxation and adventure. For more detailed information on what to expect throughout the year, visit Mazatlan Climate.