Last updated: April 22, 2025
In December, Hermosillo, Mexico experiences a mild and inviting climate, with maximum temperatures reaching 30°C (87°F) and an average of 23°C (73°F), perfect for outdoor activities. While the days are generally warm, nighttime temperatures can drop to a comfortable minimum of 15°C (58°F). This month also brings a bit of moisture, as residents and visitors can expect about 48 mm (1.9 in) of precipitation spread across 9 rainy days. The atmosphere tends to be rather humid, with levels around 76%, adding a touch of warmth to the cool winter air. Overall, December in Hermosillo offers a delightful blend of warmth and refreshing rain, making it an enchanting time to explore the city.
In Hermosillo, December marks a transitional period as temperatures cool slightly while still retaining a warm charm. With minimums around 15°C (58°F) and averages of 23°C (73°F), this month offers comfortable days, suited for outdoor activities. Maximum temperatures reach a pleasant 30°C (87°F), allowing for sun-soaked afternoons that contrast with the slightly cooler nights. Compared to the warmer months, December provides a welcomed respite without the chill typical of winter in many regions, making it an inviting time to explore the vibrant culture and outdoor beauty of this Mexican city.
In December, Hermosillo experiences a notable shift in its precipitation patterns, with 48 mm (1.9 in) of rainfall over 9 days. This amount marks a decrease compared to the heavy downpours witnessed in the preceding months, particularly the peak months of August and September, where totals soared above 500 mm. As the year winds down, the city's rainfall transitions from intense summer storms to more moderate showers, providing a refreshing yet mild respite. The trend illustrates a clear seasonal rhythm, with December serving as a bridge to the drier months ahead, offering a unique charm to the city's winter landscape.
In December, Hermosillo, Mexico experiences a humidity level of 76%, which reflects a slight drop from the previous months but remains on the higher end of the spectrum throughout the year. As the city transitions from the sweltering summer, where humidity peaks at 83% in October, there is a clear trend of decreasing moisture content heading into winter. While December’s levels are higher than the earlier months, such as March and April—when humidity dips to 59% and 57%, respectively—the relatively consistent readings in the latter part of the year signal a shift towards milder conditions. This month’s climate offers a comfortable balance, making it an inviting time for visitors while showcasing the characteristic humidity that defines Hermosillo’s seasonal variations.
As December rolls in, Hermosillo, Mexico, experiences a slight dip in UV index levels, with a reading of 9 that falls under the very high exposure category, resulting in a burn time of just 15 minutes. This marks a trend of decreasing UV intensity as the year ends, following several months of extreme exposure readings, where the index peaked at 14 from March through September. Visitors and locals alike should remain cautious—while December's UV index is lower than the scorching summer months, it's still crucial to take sun protection measures to enjoy the sunshine safely. For more details on UV conditions in the area, check out the Hermosillo UV Index.
UV Risk Categories
In Hermosillo, Mexico, December shines brightly with an impressive 317 hours of sunshine, making it one of the sunniest months of the year. As the year progresses, the trend reveals a steady increase in daylight hours, particularly peaking in March with 323 hours. Following a slight dip in the hotter months of June at 259 hours, the sunshine rebounds robustly toward the year's end, characterized by prosperous light and warmth as the city basks in the glow of the festive season. This consistent brightness not only underscores the charm of Hermosillo's climate but also invites residents and visitors alike to embrace outdoor activities and celebrate the beauty of December's sunshine.
In December, Hermosillo, Mexico experiences a notably high likelihood of sunny weather, with a 74% chance of sun gracing the city. This reflects a positive trend as the region transitions from the cooler months, following a moderate 55% in November. Compared to the earlier months, where the chances fluctuate, December stands out as a peak time for sunshine, ensuring plenty of sunny days ahead before the heavier cloud cover of the following summer months sets in. Whether you're planning outdoor activities or simply want to bask in the warm sunlight, December offers an inviting atmosphere that's hard to resist.
In Hermosillo, Mexico, the daylight duration follows a rhythmic pattern throughout the year, highlighting the region's seasonal changes. The year begins with 11 hours of daylight in both January and February. As spring approaches, the daylight gradually increases, peaking at 12 hours from March through September, providing ample time to enjoy the sun. However, as autumn sets in, the daylight begins to wane again, returning to 11 hours in both October and November, before holding steady at 11 hours once more in December. This consistent cycle of daylight not only enhances the vibrant lifestyle in Hermosillo but also showcases the gentle ebb and flow of nature's clock.
As December settles in Hermosillo, Mexico, the wind whispers a gentle promise of winter, with average wind speeds reaching 1.3 m/s (3 mph). This slight uptick from November indicates a consistent trend through the cooler months, where breezes remain mild, ranging between 1.1 and 1.5 m/s throughout the year. Unlike the intense gusts found in some regions, the December winds here are a refreshing yet calm presence, perfect for evening strolls beneath the twinkling stars. This steady and serene airflow complements the warm desert climate, creating a unique blend of comfort as the year wraps up.
The weather in Hermosillo 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 Hermosillo and find detailed weather information for every month.
In December, the weather features a warm range of temperatures, with a minimum of 15°C (58°F), an average of 23°C (73°F), and a maximum of 30°C (87°F). This month experiences approximately 48 mm (1.9 in) of precipitation over 9 days, maintaining a humidity level of 76%. In contrast, January sees slightly cooler temperatures, with a minimum of 13°C (56°F) and a higher maximum of 32°C (91°F), although the average remains consistent at 23°C (73°F). Precipitation drops to 27 mm (1.0 in) over just 6 days, with humidity levels staying the same at 76%. For further details, check out Hermosillo weather in January.
In December, temperatures range from a minimum of 15°C (58°F) to a maximum of 30°C (87°F), with an average of 23°C (73°F). The month experiences about 48 mm (1.9 in) of precipitation over 9 days, coupled with a higher humidity level of 76%. In contrast, February showcases slightly warmer conditions, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 33°C (91°F) and an average of 24°C (75°F). This month sees significantly less precipitation, totaling only 15 mm (0.6 in) over just 3 days, and a lower humidity of 68%. For a more detailed look at the weather in February, visit Hermosillo weather in February.
In December, temperatures in Hermosillo range from a minimum of 15°C (58°F) to a maximum of 30°C (87°F), with an average of 23°C (73°F). The month experiences about 48 mm (1.9 in) of precipitation over nine days, accompanied by relatively high humidity at 76%. In contrast, March sees slightly warmer temperatures, with a minimum of 15°C (60°F), an average of 24°C (76°F), and a maximum of 32°C (91°F). Precipitation decreases to 38 mm (1.5 in), also spread over nine days, but humidity drops significantly to 59%. For more details on March weather patterns, you can check Hermosillo weather in March.
In December, the weather is generally warm with temperatures ranging from a minimum of 15°C (58°F) to a maximum of 30°C (87°F), giving an average of 23°C (73°F). The month sees relatively low precipitation, amounting to 48 mm (1.9 in) spread over 9 days, along with a humidity level of 76%. In contrast, April experiences even warmer temperatures, with minimums of 16°C (62°F) and maximums soaring up to 34°C (94°F), averaging 25°C (78°F). However, April is considerably wetter, with total precipitation reaching 120 mm (4.7 in) over 17 days, while humidity levels drop to 57%. For more detailed information on the climate, check out Hermosillo weather in April.
December and May present contrasting weather patterns. In December, temperatures range from a mild minimum of 15°C (58°F) to a comfortable average of 23°C (73°F), peaking at a warm 30°C (87°F). The month experiences relatively low precipitation of 48 mm (1.9 in) over 9 days, accompanied by high humidity at 76%. In contrast, May sees warmer temperatures, with a minimum of 18°C (65°F), an average of 25°C (77°F), and a maximum soaring to 34°C (93°F). However, May is significantly wetter, with precipitation reaching 533 mm (21.0 in) spread across 30 days, while humidity remains lower at 65%. For more details, you can visit Hermosillo weather in May.
In December, the weather is generally warm with temperatures ranging from a minimum of 15°C (58°F) to a maximum of 30°C (87°F), maintaining an average of 23°C (73°F). The month experiences moderate precipitation with about 48 mm (1.9 in) over 9 days and a higher humidity of 76%. In contrast, June sees slightly higher temperatures, with a minimum of 18°C (64°F), an average of 24°C (76°F), and a maximum of 32°C (90°F). However, it is significantly wetter, with an impressive 553 mm (21.8 in) of rainfall occurring over 29 days, while humidity decreases to 66%. For more detailed insights, check out Hermosillo weather in June.
In December, the weather in Hermosillo is quite warm, with temperatures ranging from a minimum of 15°C (58°F) to a maximum of 30°C (87°F) and an average of 23°C (73°F). The month experiences relatively low precipitation, with only 48 mm (1.9 in) over approximately 9 days and a humidity level of 76%. In contrast, July sees slightly higher temperatures, with minimums of 17°C (62°F), averages of 24°C (76°F), and maximums reaching 31°C (89°F). However, it also brings significant rainfall, totaling 460 mm (18.1 in) spread across 31 days, while maintaining a similar humidity level of 75%. For more details, you can explore Hermosillo weather in July.
When comparing the weather conditions in December and August, notable differences emerge. December boasts a comfortable temperature range, with a minimum of 15°C (58°F) and a maximum of 30°C (87°F), along with relatively lower precipitation of 48 mm (1.9 in) spread over 9 days. In contrast, August experiences slightly warmer temperatures, with a minimum of 17°C (64°F) and a maximum of 32°C (90°F), but is characterized by significantly higher rainfall, totaling 590 mm (23.2 in) over 30 days. Additionally, humidity is higher in August at 82%, compared to December's 76%. For a more detailed look at the heat and rainfall in this summer month, check out Hermosillo weather in August.
In comparing the weather of December and September, we can observe some distinct differences. December typically experiences milder temperatures with a minimum of 15°C (58°F) and an average of 23°C (73°F), while September is slightly warmer, boasting a minimum of 17°C (63°F) and an average of 24°C (75°F). However, September is characterized by far higher precipitation, with 683 mm (26.9 in) falling over 29 days, in stark contrast to December's 48 mm (1.9 in) over just 9 days. Humidity levels also peak in September at 82%, compared to December's 76%. For a more detailed look at September's weather, check out Hermosillo weather in September.
In December, the weather in Hermosillo exhibits milder temperatures with a minimum of 15°C (58°F) and an average high of 30°C (87°F), while October sees slightly higher temperatures, with a minimum of 16°C (62°F) and a peak of 31°C (88°F). Precipitation levels contrast sharply between the two months; December averages only 48 mm (1.9 in) of rain over 9 days, whereas October experiences a significant 658 mm (25.9 in) over the entire month, resulting in rain almost every day. Additionally, December's humidity is 76%, making it less humid than October's 83%. For more detailed insights, you can check Hermosillo weather in October.
In comparing the weather of December to that of November, December features a slightly cooler temperature range, with a minimum of 15°C (58°F) and a maximum of 30°C (87°F), while November experiences a broader range, peaking at 32°C (89°F). Precipitation is significantly lower in December, with only 48 mm (1.9 in) over 9 days, compared to November's substantial 276 mm (10.9 in) spread across 24 days. Additionally, humidity in December averages 76%, slightly lower than November's 80%. For more detailed information, you can check Hermosillo weather in November.
In December, Hermosillo experiences a notable shift in weather compared to the hotter months of the year. With average temperatures resting at a comfortable 23°C (73°F), this month offers a refreshing break from the sweltering heat that characterizes the summer season. However, the 76% humidity can still make for a muggy ambiance. December also witnesses increased precipitation, with about 9 rainy days bringing a total of 48 mm (1.9 in), contributing to a sense of renewal in the landscape. If you're curious about how Hermosillo's weather stacks up throughout the year, check out the detailed insights in Hermosillo Climate.