Last updated: August 21, 2025
In December, Santos, Brazil, showcases its warm and inviting climate, with temperatures reaching a maximum of 30°C (87°F) and enjoying a comfortable average of 24°C (75°F). However, with 19 days of precipitation and a total rainfall of 153 mm (6.0 in), it’s essential to be prepared for some rainy spells amidst the tropical atmosphere. The high humidity level of 87% adds to the overall sultriness, making it a quintessential summer month. Visitors can expect a blend of sun and showers, perfect for those who appreciate the lush, vibrant weather typical of this coastal gem.
In December, Santos, Brazil begins to embrace the warmth of summer, with temperatures that reflect a delightful shift towards sunnier days. The minimum temperature, hovering at a comfortable 19°C (66°F), provides a gentle start to the day, while the average temperature rises to an inviting 24°C (75°F). As the sun reaches its zenith, the mercury peaks at a pleasant 30°C (87°F), making it ideal for beach outings and outdoor adventures. This pattern of steady warmth is consistent with the preceding months, culminating in a vibrant holiday atmosphere that beckons both locals and tourists alike to enjoy the lush coastal scenery and rich cultural experiences. With temperatures generally increasing as the year comes to a close, December offers a perfect blend of warmth and comfort in this charming Brazilian city.
In Santos, Brazil, December marks a transition as the rainy season reaches its peak, bringing 153 mm (6.0 in) of precipitation over 19 days. This month is part of a broader upward trend in rainfall from November’s 147 mm; however, it falls short of the heavier deluge experienced in February, which boasts the highest monthly accumulation. The steady increase in rainy days from earlier months, coupled with the consistent moisture levels seen since October, highlights December's pivotal role in the region’s lush, tropical climate. Ultimately, as the year wraps up, Santos enters a time where rainfall not only nourishes the vibrant landscapes but also sets the stage for the wet season ahead.
In Santos, Brazil, December ushers in a humidity level of 87%, slightly higher than the preceding months but reflecting a trend common throughout the year. As we transition from the cooler months of mid-year, where humidity dips to 80% in July and 76% in October, conditions become more humid as we approach the summer season. This overall pattern showcases a gradual ascent in humidity from 78% in August to a notable peak in January at 89%. December's moisture-laden air sets the stage for the vibrant summer months ahead, making it a characteristic feature of Santos' tropical climate.
In December, Santos, Brazil, experiences its peak UV Index of 15, categorizing it as extreme and indicating a burn time of just 10 minutes. This marks a continuation of a trend seen throughout the year, where high UV levels dominate the first half, peaking in the summer months. From January to November, the UV Index consistently hovers around extremes, dipping only in May and June to very high and high levels, respectively. As the year closes, December stands out as a reminder of the importance of sun safety, urging residents and visitors to take precautions when enjoying the sun. For more detailed information, check out Santos UV Index.
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In Santos, Brazil, December shines brightly as the sun graces the city with an impressive 317 hours of sunlight, marking it as the sunniest month of the year. This vibrant finale to the year is a delightful contrast to the cooler, shorter days of winter seen in the southern hemisphere's mid-year, when only 243 hours of sunshine were recorded in June. As the year unfolds, a clear pattern emerges: the city's sunlight hours generally rise from the cooler months, peaking in December before slightly tapering in January. The gradual increase from 256 hours in January, through a steady escalation, reflects a warm embrace of summer. This trend not only enhances the natural beauty of Santos but also invites locals and tourists alike to bask in the lively atmosphere of the city during the festive month.
In Santos, Brazil, the likelihood of sunny weather in December stands at 42%, reflecting a consistent trend as the year winds down. This percentage mirrors conditions seen in both March and November, suggesting that while sunshine is certainly a possibility, it competes with overcast skies. Notably, the sunny odds tend to improve as summer approaches, peaking in the mid-year months of July and August with probabilities of 61% and 50%, respectively. Therefore, while December offers a fair chance for sunbathers to revel in the beachside warmth, those planning outdoor activities should still be prepared for occasional cloud cover.
In Santos, Brazil, December brings a delightful return to longer days, with 13 hours of daylight that mirror the brightness of January and November. This period of extended sunlight marks the height of summer in the Southern Hemisphere, creating the perfect backdrop for outdoor adventures and vibrant beach days. The daylight duration gradually decreases from March to May, where the sun graces the city for only 10 hours per day, leading into the cooler winter months. However, as spring approaches from August onward, daylight begins to stretch once again, allowing residents and visitors alike to bask in the warm glow before returning to the festive spirit of the holiday season with ample time to enjoy the beautiful coastal scenery. Overall, the ebb and flow of daylight in Santos showcases the rhythmic nature of the changing seasons, making each month uniquely captivating.
As December arrives in Santos, Brazil, the ocean breeze picks up slightly, with an average wind speed of 3.4 m/s (8 mph). This marks a notable transition from the lower winds of the earlier months, where January to March felt particularly calm, hovering around 2.6 to 2.8 m/s. The wind begins to gather momentum in the latter part of the year, peaking in October at 4.7 m/s (11 mph). In December, the winds remain relatively gentle yet invigorating, making it an ideal time for beach strolls and outdoor activities. As summer draws closer, the breezes are embraced by both locals and visitors, creating a perfect blend of warmth and fresh air along the scenic coastline.
Weather in Santos varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santos, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January in Santos present warm and humid conditions, but with some notable differences. December sees temperatures ranging from a minimum of 19°C (66°F) to a maximum of 30°C (87°F), with an average of 24°C (75°F). In contrast, January offers slightly warmer temperatures, with a minimum of 21°C (69°F), an average of 26°C (79°F), and a maximum of 32°C (90°F). Precipitation is also higher in January, totaling 184 mm (7.2 in) over 18 days, compared to December's 153 mm (6.0 in) over 19 days. The humidity remains consistently high, reaching 87% in December and slightly increasing to 89% in January, making both months feel quite tropical. For more detailed information, you can check Santos weather in January.
December weather in Santos features slightly lower temperatures, with a minimum of 19°C (66°F) and an average of 24°C (75°F), reaching a maximum of 30°C (87°F). The month experiences considerable rainfall, totaling 153 mm (6.0 in) over 19 days, while the humidity remains high at 87%.
In contrast, February sees warmer temperatures, with a minimum of 21°C (69°F) and an average of 25°C (78°F), peaking at 33°C (91°F). This month also has increased precipitation, reaching 249 mm (9.8 in) over the same 19 days, and maintains the same high humidity level of 87%.
For a more detailed look at the weather, visit Santos weather in February.
In December, temperatures range from a minimum of 19°C (66°F) to a maximum of 30°C (87°F), with an average of 24°C (75°F). The month sees about 153 mm (6.0 in) of rainfall over 19 days, coupled with high humidity at 87%. In contrast, March experiences slightly warmer temperatures, with a minimum of 21°C (69°F) and a maximum of 32°C (90°F), averaging 25°C (77°F). Rainfall increases to 229 mm (9.0 in) spread over 20 days, while humidity remains comparable at 86%. For more detailed information, you can check Santos weather in March.
In December, the weather features a warm climate with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 30°C (87°F) and a total precipitation of 153 mm (6.0 in) spread over 19 days, creating a notably humid environment at 87%. Conversely, April offers slightly cooler temperatures, with averages between 19°C (66°F) and 31°C (89°F), as well as reduced precipitation of 139 mm (5.5 in) over 15 days. The humidity in April also dips to 84%, making it a bit more comfortable compared to December. For a more detailed look at April's weather, you can check Santos weather in April.
December and May present a contrast in weather characteristics. In December, temperatures range from a minimum of 19°C (66°F) to a maximum of 30°C (87°F), with an average temperature of 24°C (75°F). The month experiences significant rainfall, accumulating 153 mm (6.0 in) over approximately 19 days, and the humidity is quite high at 87%. In contrast, May sees slightly cooler conditions, with temperatures ranging from 15°C (59°F) to 29°C (84°F), and an average of 22°C (71°F). While May also brings rain, it totals 130 mm (5.1 in) across 13 days, with a slightly lower humidity level of 84%. For more specifics on the weather in May, you can check Santos weather in May.
In December, the weather is generally warmer with average temperatures around 24°C (75°F) and a maximum that can reach up to 30°C (87°F). The month experiences significant rainfall, accumulating 153 mm (6.0 in) over 19 days, and the humidity is relatively high at 87%. In contrast, June offers slightly cooler temperatures, with an average of 21°C (70°F) and a minimum of 15°C (60°F). Rainfall is less frequent, totaling 117 mm (4.6 in) over 12 days, and humidity levels are a bit lower at 82%. For a detailed look at the conditions in June, you can check Santos weather in June.
When comparing the weather in December and July, we see notable differences. December typically experiences warmer temperatures, with a minimum of 19°C (66°F) and an average of 24°C (75°F), while July has a cooler minimum of 11°C (53°F) and an average of 20°C (67°F). Both months can reach a maximum of 30°C (86-87°F), but December tends to be more humid at 87% compared to July's 80%. Additionally, December sees significantly more precipitation, with 153 mm (6.0 in) over 19 days, whereas July enjoys drier conditions with just 81 mm (3.2 in) over 8 days. For more details on the July climate, you can check out Santos weather in July.
December typically enjoys warmer temperatures compared to August, with average highs reaching 30°C (87°F) in both months, but December's nights are notably warmer, with minimum temperatures around 19°C (66°F) compared to August's cooler lows of 14°C (57°F). Precipitation is somewhat higher in December at 153 mm (6.0 in) over 19 days, while August sees slightly less rain, totaling 133 mm (5.3 in) across 13 days. Additionally, December's humidity levels are higher, at 87%, compared to 78% in August, making the former month feel more tropical. For more detailed information about August weather patterns, check out Santos weather in August.
December and September exhibit notable differences in weather patterns. December typically offers warmer temperatures, with averages around 24°C (75°F) and a maximum reaching 30°C (87°F), compared to September, which sees an average of 21°C (70°F) and a peak of 33°C (92°F). While December is characterized by higher humidity at 87% and more precipitation (153 mm over 19 days), September tends to be drier, experiencing 102 mm of rain over 13 days and a lower humidity level of 78%. For more details on the weather in September, you can visit Santos weather in September.
In comparing the weather between December and October, December tends to be slightly warmer, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 30°C (87°F), compared to October, which has a minimum of 17°C (62°F) and a maximum of 34°C (93°F). Despite the higher maximum temperature in October, the overall average temperature is lower at 22°C (72°F). Additionally, December experiences more rainfall, with 153 mm (6.0 in) falling over 19 days, whereas October sees 183 mm (7.2 in) during the same number of days. Humidity in December is also notably higher at 87%, compared to October's 76%. For a more detailed insight into October's climate, you can visit Santos weather in October.
In comparing the weather conditions of December and November, December shows slightly warmer temperatures, with a minimum of 19°C (66°F) and an average of 24°C (75°F), compared to November's minimum of 17°C (63°F) and average of 22°C (72°F). Interestingly, December has a higher maximum temperature of 30°C (87°F), aligning with November's peak at 31°C (87°F). Precipitation levels are fairly similar, with December experiencing 153 mm (6.0 in) over 19 days, while November recorded 147 mm (5.8 in) across 18 days. Additionally, humidity is a bit higher in December at 87%, compared to November's 85%. For more details on November weather, check out Santos weather in November.
As December unfolds in Santos, it heralds the onset of summer, with the warmest temperatures of the year and an increase in humidity that makes the air feel particularly balmy. With average highs reaching a vibrant 30°C, this month stands in stark contrast to the cooler, drier conditions of the preceding months. However, December also brings its share of rain, with significant precipitation spread over nearly half the month, contributing to lush greenery. This unique blend of warmth and moisture creates a vibrant tropical atmosphere, perfect for enjoying the city's stunning beaches and lively festive spirit. For a deeper dive into the weather patterns throughout the year, visit Santos Climate.