Last updated: August 21, 2025
December in Valparaiso, Brazil showcases a vibrant weather pattern characterized by a maximum temperature soaring to 36°C (98°F) and an average of 26°C (80°F). The nights cool off slightly, with a minimum temperature of 17°C (63°F). Despite the warmth, December also brings a fair share of rain, with precipitation measuring 164 mm (6.5 in) over 17 days, contributing to a notable humidity level of 82%. These elements create a dynamic climate perfect for experiencing both the sunny outdoors and refreshing tropical showers. Enjoy Valparaiso's unique charm this December!
In December, Valparaiso, Brazil, experiences a warm and inviting climate, with temperatures ranging from a mild 17°C (63°F) at night to a pleasant 36°C (98°F) during the day. The average temperature hovers around 26°C (80°F), providing a consistent level of warmth that is characteristic of the summer season in this vibrant coastal city. As the year draws to a close, December’s temperatures reflect a gentle transition into the hotter months, following October and November, which also featured averages of 26°C. Notably, the maximum temperatures remain fairly stable, dipping slightly in December compared to the peaks observed in the preceding months. This trend of warm, sunny days coupled with cool nights makes December an ideal time to explore Valparaiso’s stunning vistas and rich cultural tapestry.
December in Valparaiso, Brazil, marks a significant uptick in precipitation, with 164 mm (6.5 in) of rain typically falling over 17 days. This increase follows a trend of heightened rainfall as the year concludes, showing a notable rise from the 115 mm (4.5 in) recorded in November. The rainfall in December is indicative of the wet season's onset, contrasting sharply with the drier months of mid-year, such as July, which sees almost no precipitation. As the year draws to a close, the atmosphere becomes invigorated, preparing the lush landscape for rejuvenation in the coming months. Overall, December's rainfall is a vital contributor to the region's vibrant ecosystem and agricultural cycles.
In December, Valparaiso, Brazil, experiences a notable uptick in humidity, reaching 82% as the year winds down. This increase is quite apparent when viewed in the context of the preceding months; after a significant drop from a humid 84% in March to a low of just 31% in October, the humidity levels climb again as the summer season approaches. With the onset of December, the humidity returns to a more oppressive state, reminiscent of January and February's high levels, and signals the return of warmer, moisture-laden air. As residents enjoy the festive atmosphere, they are met with a sultry climate that contrasts sharply against the drier conditions of the mid-year months. Overall, December serves as a bridge from the dry spell of late spring to the tropical warmth of high summer, reminding us that the coastal city dances between varying levels of humidity throughout the year.
In December, Valparaiso, Brazil, experiences a notably high UV Index of 16, categorized as extreme, which means you'll need to be especially cautious when outdoors. This peak in UV exposure follows a trend observed since January, where the UV Index has remained consistently high, hovering between 14 and 16 during these warmer months. With a burn time of just 10 minutes, it’s crucial for residents and visitors alike to protect their skin adequately. The continuous pattern of high UV levels emphasizes the importance of sun safety in this vibrant coastal city. For more detailed information, visit Valparaiso UV Index.
UV Risk Categories
December in Valparaiso, Brazil, offers a delightful embrace of sunshine, with 333 hours of luminous daylight to bid farewell to the year. As the calendar year progresses, a clear upward trend emerges in sunlight hours—each month bringing an increase that peaks in March with 338 hours. Following a slight dip in April, the sunshine remains generous, hovering around the high 300s through December. This month alone marks a significant closing to the year, with just five hours shy of the peak found in the spring. Enthusiasts of bright days will appreciate this festive month where the sun plays a vibrant role in the rhythms of life, inviting both locals and tourists to indulge in the outdoors.
In December, Valparaiso, Brazil, enjoys a 63% chance of sunny weather, marking a significant shift as the region transitions into the summer months. This probability reflects an upward trend from the preceding months of November and October, which saw only 39% and 40% chances of sunshine, respectively. As the month progresses, residents and visitors can expect increasingly favorable weather, reminiscent of the more sun-drenched summer months like July, which boasts a striking 81%. Overall, December serves as a beautiful prelude to the sun-soaked days ahead, making it an appealing time for outdoor activities and celebrations.
In Valparaiso, Brazil, December ushers in a delightful 13 hours of daylight, mirroring the abundance of light seen in November. This trend showcases a gradual increase in daylight hours from the shorter days of winter, with daylight duration reaching its peak in the summer months of December and January. Following this pinnacle, the daylight begins to taper off, signaling the transition towards the fall and winter seasons. As the year progresses, daylight gradually decreases, settling into a consistent pattern of around 11 hours in autumn and 10 hours during the winter months of June and July. Overall, December in Valparaiso offers vibrant, sunlit days that are perfect for exploring the picturesque surroundings and enjoying the lively atmosphere of this coastal city.
In Valparaiso, Brazil, December brings a gentle wind with an average speed of 2.5 m/s (6 mph), offering a refreshing reprieve as summer approaches. Over the course of the year, the wind patterns reveal an intriguing trend: they begin modestly in the early months, maintaining a steady 2.2 m/s (5 mph) from January to March. As the seasons shift, a gradual increase in wind speed is observed, peaking at 3.1 m/s (7 mph) in August and dipping to a mild 2.5 m/s (6 mph) by December. This subtle ebb and flow creates an inviting coastal atmosphere, perfect for those looking to enjoy the scenery and embrace the refreshing coastal breezes that characterize the end of the year.
Weather in Valparaiso varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Valparaiso, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather typically features a minimum temperature of 17°C (63°F) and an average of 26°C (80°F), with maximum temperatures reaching 36°C (98°F). The month experiences significant rainfall, averaging 164 mm (6.5 in) over 17 days, and humidity levels hover around 82%. In contrast, January sees a slight increase in minimum temperature to 19°C (66°F), while the average remains at 26°C (80°F) and maximum temperatures climb to 37°C (99°F). Precipitation in January rises to 193 mm (7.6 in), also spread over 17 days, with humidity increasing slightly to 84%. For further details on January weather in this region, check out Valparaiso weather in January.
December and February share similar temperature ranges, with both months experiencing minimums around 17°C (63-64°F) and maxima peaking at 36°C (97-98°F). However, December typically has slightly higher precipitation, averaging 164 mm (6.5 in) over 17 days, compared to February's 157 mm (6.2 in) over 16 days. Humidity is also slightly higher in February at 85%, whereas December hovers around 82%. For more details on February weather, check out Valparaiso weather in February.
In December, the weather features a minimum temperature of 17°C (63°F) and an average of 26°C (80°F), with highs reaching up to 36°C (98°F). This month experiences considerable rainfall, with precipitation totaling 164 mm (6.5 in) over about 17 days, and humidity levels sitting at 82%. In contrast, March sees slightly milder temperatures, with a minimum of 18°C (64°F) and a maximum of 37°C (98°F), while maintaining the same average of 26°C (80°F). March has less rainfall, accumulating around 100 mm (3.9 in) over 14 days, and humidity rises slightly to 84%. For more specific details on March weather, you can visit Valparaiso weather in March.
In December, the weather is characterized by warmer temperatures, with a minimum of 17°C (63°F) and an average of 26°C (80°F), reaching highs of up to 36°C (98°F). This month experiences significant rainfall, totaling 164 mm (6.5 in) over 17 days, and the humidity levels are notably high at 82%. In contrast, April brings milder temperatures, starting at a minimum of 11°C (52°F), averaging 25°C (77°F), and peaking at 35°C (95°F). The precipitation in April is much lower, with only 61 mm (2.4 in) over just 5 days, and humidity levels are slightly reduced at 76%. For a detailed look at the weather in April, you can visit Valparaiso weather in April.
December and May present a striking contrast in weather conditions. December is marked by significantly warmer temperatures, with a minimum of 17°C (63°F) and an average high of 36°C (98°F). This month also experiences a higher level of humidity at 82% and frequent rainfall, totaling 164 mm (6.5 in) over 17 days. In contrast, May offers much cooler temperatures, ranging from a minimum of 6°C (44°F) to an average of 22°C (72°F), with a maximum of 34°C (94°F). The precipitation in May is considerably less at just 33 mm (1.3 in) over 4 days, and the humidity is lower at around 60%. For those looking to compare the seasonal variations, more information can be found at Valparaiso weather in May.
December and June showcase stark contrasts in weather patterns. In December, temperatures range from a minimum of 17°C (63°F) to a maximum of 36°C (98°F), averaging around 26°C (80°F), accompanied by high humidity at 82%. Additionally, December is quite wet, with 164 mm (6.5 in) of precipitation spread over 17 days. In contrast, June experiences milder temperatures, with a minimum of 7°C (45°F) and a maximum of 33°C (92°F), averaging 22°C (72°F). This month is much drier, receiving only 16 mm (0.6 in) of rain over just 2 days, and the humidity drops significantly to 48%. For more insights into weather trends, you can explore Valparaiso weather in June.
When comparing the weather in December and July, there is a stark contrast in temperatures and humidity. December experiences much warmer conditions, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 36°C (98°F), accompanied by high humidity levels of 82%. Additionally, the month receives considerable rainfall, totaling 164 mm (6.5 in) across 17 days. In contrast, July offers cooler weather, featuring average temperatures that range from a chilly minimum of 4°C (39°F) to a pleasant maximum of 33°C (92°F). This month is remarkably dry with only 10 mm (0.4 in) of precipitation, occurring over no rainy days, and humidity levels are significantly lower at 44%. For more details on July weather, check out Valparaiso weather in July.
December weather features significantly higher temperatures, with a minimum of 17°C (63°F) and average highs reaching up to 36°C (98°F), compared to August's cooler temperatures ranging from a low of 7°C (45°F) to an average of 22°C (73°F). Additionally, December is marked by higher humidity at 82% and more frequent precipitation, averaging 164 mm (6.5 in) over 17 days. In contrast, August experiences much drier conditions with only 20 mm (0.8 in) of rain over just 4 days and a lower humidity level of 38%. This stark contrast highlights the seasonal variations in weather, making December distinctly warmer and more humid than August. For further insights on August weather, visit Valparaiso weather in August.
When comparing the weather in December and September, it is clear that each month offers distinct conditions. December boasts a warmer climate with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 36°C (98°F), while September experiences slightly cooler temperatures, with a minimum of 13°C (55°F) and a scorching maximum of 41°C (106°F). Humidity levels are significantly higher in December at 82%, contributing to a more humid atmosphere, whereas September has a much drier feel with humidity at just 33%. Additionally, December sees considerable rainfall, with 164 mm (6.5 in) occurring over 17 days, in stark contrast to September's minimal precipitation of 23 mm (0.9 in) over only 3 days. For those interested in a more detailed overview, check out Valparaiso weather in September.
In comparing the weather of December and October, we see some interesting contrasts. December has a warmer minimum temperature of 17°C (63°F) and enjoys an average of 26°C (80°F), while October boasts a slightly lower minimum of 15°C (60°F) but a significantly higher maximum of 42°C (108°F). Additionally, October experiences lower precipitation levels at 101 mm (4.0 in) over 12 days, compared to December's 164 mm (6.5 in) spread across 17 days. Humidity also diverges notably; while December has a high humidity level of 82%, October is much drier at just 31%. For more details on October's weather, check out Valparaiso weather in October.
In December, the weather remains warm with an average temperature of 26°C (80°F), similar to November; however, the extremes differ slightly, with December's maximum reaching 36°C (98°F) compared to November's peak of 38°C (101°F). Precipitation is notably higher in December, totaling 164 mm (6.5 in) over 17 days, whereas November sees only 115 mm (4.5 in) across 13 days. Additionally, humidity levels rise significantly in December to 82%, compared to 62% in November, making the later month feel more humid and potentially more uncomfortable. For a detailed comparison of November weather, you can check Valparaiso weather in November.
As December rolls into Valparaiso, the weather transforms into a lively spectacle, standing in stark contrast to the cooler months preceding it. With warmer temperatures taking center stage, the atmosphere is infused with a certain vibrancy, inviting both locals and visitors to relish outdoor activities. The increased humidity adds a tropical flair, while occasional rainfall punctuates the sunshine, reminding us of the region's lush landscape. This blend of warm days and refreshing showers makes December uniquely captivating. For a deeper insight into the intricate patterns of Valparaiso's climate throughout the year, check out Valparaiso Climate.