December Weather in Mazatlan, Mexico

Last updated: April 22, 2025

Experience the enchanting December weather in Mazatlán, Mexico, where temperatures range from a comfortable minimum of 9°C (48°F) to a pleasant maximum of 29°C (85°F). This month offers an average temperature of 18°C (65°F), ideal for outdoor adventures and beach relaxation. With only 15 mm (0.6 in) of precipitation spread over about 4 days, visitors can enjoy mostly dry conditions, although a touch of humidity at 70% adds to the tropical charm. Whether exploring vibrant local culture or savoring the breathtaking coastline, December in Mazatlán promises delightful weather for all.

December Temperature in Mazatlan

In December, Mazatlán, Mexico welcomes the winter season with mild and comfortable temperatures, boasting a minimum of 9°C (48°F) and an average of 18°C (65°F). As the month progresses, daytime highs can reach up to 29°C (85°F), providing a warm respite from the cooler evenings. This pattern of relatively stable temperatures continues from the late fall weeks leading into winter, contrasting sharply with the more significant fluctuations seen in the earlier months of the year. Overall, December's pleasant climate makes it an ideal time for visitors to enjoy the vibrant culture and stunning coastline of Mazatlán while basking in the sun’s warmth.

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.
JanFebMarAprMayJunJulAugSepOctNovDec656769717168696868686765
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 transitional phase in precipitation patterns as the region shifts from the heavy rains of summer to a drier winter season. With an average of 15 mm (0.6 in) of rainfall spread over 4 days, December stands in stark contrast to the rain-soaked months that precede it. This decline in precipitation reflects a broader trend, as earlier months, such as August and September, showcase staggering totals of 517 mm (20.4 in) and 412 mm (16.2 in), respectively. As the year concludes, residents can expect a reprieve from the relentless rains, paving the way for cooler, sunnier days perfect for outdoor exploration and festivities, yet the city remains vigilant as the festive spirit clashes with the remnants of the tropical season.

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.
JanFebMarAprMayJunJulAugSepOctNovDec10513351553673575174122565615
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mazatlan

As December rolls in, Mazatlán experiences a moderate drop in humidity to 70%, marking a transition from the peak wetness of the summer months. After peaking at 82% in both August and September, humidity levels gradually decrease through the fall, with November at 72%. This trend suggests the region’s gradual shift towards the dryer season, which continues into the winter months. Despite the decline from the summer’s oppressive humidity, December’s levels remain relatively high, creating a warm and comfortable atmosphere perfect for enjoying the bustling holiday festivities along the beautiful coastal city.

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.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%59%62%73%78%79%82%82%79%72%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mazatlan

In December, Mazatlán enjoys a UV Index of 9, landing in the very high exposure category and allowing for approximately 15 minutes of unprotected sun before risk of burning sets in. This month's UV levels signify a gentle decline from the preceding months, where extreme levels peaked at 14 during the summer. As the year winds down, visitors can still expect substantial sun exposure—the trend clearly shows a consistent need for sun protection throughout the year, especially during those sizzling summer months. For more detailed information, explore the full insights on the 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.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141414141412109
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 marks the onset of delightful sunshine, boasting an impressive 297 hours of sunlight. As the year wraps up, the city experiences a notable increase in daylight, positioned just a notch below the sunniest months of March and April, both reaching 321 hours. This trend of increasing sunlight throughout the winter months showcases Mazatlán's charm as a paradise for sunseekers. While summer months like June dip to 252 hours, the consistent warmth and radiant December sun provide a rejuvenating escape, inviting visitors to bask in its golden glow before the year concludes.

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.
JanFebMarAprMayJunJulAugSepOctNovDec242h281h321h321h316h252h289h267h242h267h289h297h
Data source: Mazatlan December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mazatlan During December

In Mazatlán, Mexico, December offers a promising 66% chance of sunny weather, making it an appealing time for visitors seeking warmth and sunshine. As the year winds down, the likelihood of clear skies increases significantly compared to the summer months, where the chance of sun plummets to as low as 5% in June. Interestingly, December's sunlit days are on par with earlier months like November and show a marked improvement from the spring's peak season, where February boasts a sunny 74%. This transitional month sets the stage for a delightful winter escape, inviting travelers to bask in the golden rays before the new year begins.

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.
JanFebMarAprMayJunJulAugSepOctNovDec46%74%68%68%39%5%14%8%7%16%46%66%
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, daylight duration exhibits a beautiful rhythm throughout the year, creating inviting atmospheres for both locals and visitors. December, like its neighboring months of January and February, offers a cozy 11 hours of daylight, maintaining a balance that complements the cooler winter season. As the year transitions into spring, daylight stretches to 12 hours from March to May, providing extra time to explore the vibrant coastal scenes and lively markets. The summer months of June and July bask in the warmth with an impressive 13 hours of daylight, encouraging outdoor activities and sunset strolls. However, as summer fades into autumn, the daylight gradually recedes back to 11 hours in October and November. Overall, the daylight variations in Mazatlán highlight the region’s adaptability and charm, ensuring every visitor can savor the sun-drenched days of this beautiful coastal paradise.

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.
JanFebMarAprMayJunJulAugSepOctNovDec11h 12m11h 34m12h 2m12h 32m12h 56m13h 8m13h 2m12h 40m12h 12m11h 42m11h 17m11h 5m
Data source: Mazatlan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Mazatlan

In Mazatlán, Mexico, December brings a gentle embrace of coastal breezes, with an average wind speed of 1.2 m/s (3 mph). As the year draws to a close, the winds remain consistently mild, mirroring the tranquil atmosphere of the city during this festive season. Notably, wind speeds during the winter months show a slight overall decrease from the spring's more spirited gales, peaking at 1.8 m/s (4 mph) in April. However, the December winds maintain a refreshing touch, which coupled with the warm weather, enhances the charm of this coastal paradise. Visitors can enjoy leisurely strolls along the beach, with the calming winds offering a perfect backdrop for embracing the beauty of winter in Mazatlán.

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.
JanFebMarAprMayJunJulAugSepOctNovDec1.41.61.61.81.51.11.21.21.11.21.21.2 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 features a minimum temperature of 9°C (48°F) and an average of 18°C (65°F), reaching a maximum of 29°C (85°F). With about 15 mm (0.6 in) of precipitation over 4 days, the month is relatively humid, with humidity levels around 70%. In contrast, January maintains similar temperature ranges, with the same minimum, average, and maximum temperatures, but experiences less rainfall—approximately 10 mm (0.4 in) over just 1 day—resulting in lower humidity levels around 65%. For more detailed insights, you can explore Mazatlan weather in January.

December and February in Mazatlán showcase mild temperatures with slight variations. December typically sees minimum temperatures around 9°C (48°F), an average of 18°C (65°F), and maximums reaching 29°C (85°F). With about 15 mm (0.6 in) of precipitation over approximately four days, it also experiences higher humidity at 70%. In contrast, February presents a slightly warmer profile, with an average temperature of 19°C (67°F) and highs peaking at 31°C (88°F). This month is drier, featuring only 5 mm (0.2 in) of precipitation over just one day and lower humidity at 61%. Overall, February offers warmer and drier conditions compared to December. For more detailed insights on February weather, check out Mazatlan weather in February.

December and March present some interesting contrasts in weather conditions. In December, temperatures range from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), with an average temperature of 18°C (65°F). The month sees about 15 mm (0.6 in) of precipitation across four days, coupled with a humidity level of 70%. In comparison, March experiences slightly warmer temperatures, with a minimum of 11°C (52°F), an average of 21°C (70°F), and a maximum of 32°C (90°F). Precipitation decreases to 13 mm (0.5 in) over just three days, and humidity drops to 59%. For more details, you can check Mazatlan weather in March.

In December, the weather is generally mild with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), while April experiences warmer conditions with temperatures varying from 11°C (51°F) to a high of 34°C (93°F). December sees less precipitation, averaging only 15 mm (0.6 in) over about four rainy days, compared to April, which receives more rainfall at 35 mm (1.4 in) over five days. Additionally, December has a higher humidity level of 70%, whereas April's humidity is relatively lower at 62%. For a more detailed look at the weather during April, visit Mazatlan weather in April.

In December, the weather tends to be warm with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), accompanied by relatively low precipitation of just 15 mm (0.6 in) over about 4 days. The humidity levels are moderate at 70%. In contrast, May brings warmer temperatures, with a minimum of 13°C (56°F) and a maximum of 32°C (90°F), but it also sees significantly higher rainfall, totaling 155 mm (6.1 in) spread across 19 days. The humidity slightly increases to 73% during this month. For a more detailed look at what to expect, check out Mazatlan weather in May.

December and June in Mazatlán present notable differences in weather patterns. In December, temperatures typically range from a mild 9°C (48°F) at night to a warm 29°C (85°F) during the day, accompanied by relatively low precipitation of 15 mm over just four days. The humidity is around 70%, making the air feel comfortable. In contrast, June boasts higher temperatures, with a minimum of 14°C (58°F) and a maximum of 30°C (87°F), but it experiences significantly more rainfall, totaling 367 mm over 28 days, and increased humidity at 78%. These contrasts highlight December's drier and more temperate conditions compared to June's wet and humid environment. For a deeper look at June weather specifics, you can check Mazatlan weather in June.

In December, the weather in Mazatlán is typically milder, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), and an average of around 18°C (65°F). The month sees relatively low precipitation at 15 mm (0.6 in) over just 4 days, accompanied by a humidity level of 70%. In contrast, July is substantially warmer with temperatures ranging from a minimum of 14°C (58°F) to an average and maximum of 29°C (85°F). However, July is also characterized by heavy rainfall, with precipitation reaching 357 mm (14.0 in) across 29 days, and higher humidity at 79%. For those looking to understand in detail what July brings, you can explore more here: Mazatlan weather in July.

December and August present contrasting weather patterns in Mazatlan. In December, temperatures range from a mild 9°C (48°F) at night to a warm 29°C (85°F) during the day, with average humidity at 70%. The month sees relatively low precipitation, totaling only 15 mm (0.6 in) over about four days. In stark contrast, August features much warmer night temperatures, starting at a minimum of 15°C (59°F) and reaching an average high of 28°C (83°F). However, it is also the wettest month, with a staggering 517 mm (20.4 in) of rainfall spread over nearly every day, leading to higher humidity levels at 82%. For more details about August's weather, you can check out Mazatlan weather in August.

In comparing the weather of December and September, several notable differences emerge. December generally experiences milder temperatures, with averages ranging from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), while September tends to be warmer with minimums around 15°C (59°F) and similar maximums peaking at 29°C (84°F). However, September is significantly wetter, receiving approximately 412 mm (16.2 in) of precipitation over 28 days, compared to December's much drier conditions with just 15 mm (0.6 in) over four days. Humidity levels also differ, with September being more humid at 82% compared to December's 70%. For a more detailed look at September weather patterns, you can visit Mazatlan weather in September.

When comparing the weather in December and October, December offers milder temperatures with a minimum of 9°C (48°F) and an average of 18°C (65°F), while October is slightly warmer, with a minimum of 13°C (56°F) and an average of 20°C (68°F). Although both months reach a maximum temperature of 29°C (85°F), October experiences significantly more rainfall, with 256 mm (10.1 in) over 25 days, compared to December's 15 mm (0.6 in) over just 4 days. Additionally, October's humidity level is higher at 79%, versus December's 70%. For a detailed look at October's weather in Mazatlan, you can check Mazatlan weather in October.

In comparing the weather of December to November, December tends to be slightly warmer with an average temperature of 18°C (65°F) compared to November's 19°C (67°F). Although both months can reach a maximum of 29°C (85°F), December has a lower minimum temperature of 9°C (48°F) versus November's 11°C (52°F). Additionally, December sees significantly less rainfall, with only 15 mm (0.6 in) over 4 days, contrasted with November's 55 mm (2.2 in) over 9 days. The humidity levels are quite similar, with December at 70% and November at 72%. For more details, you can check Mazatlan weather in November.

Compare Mazatlan's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Mazatlan

As December rolls in, Mazatlán embraces a delightful transition from the warm, sun-soaked days of previous months. The temperatures become more temperate, averaging a comfortable 18°C (65°F), ideal for outdoor exploration. With only a few days of light rainfall, the chances of a wet day are reduced, allowing visitors to enjoy the city's vibrant atmosphere with lower humidity levels than in the summer. This refreshing climate not only invites travelers to bask in the coastal beauty but also highlights December as a wonderful time to experience Mazatlán's charm. For more insights into Mazatlán's weather patterns, be sure to check out Mazatlan Climate.