Last updated: August 28, 2025
In December, Piriapolis, Uruguay experiences a delightful summer climate characterized by a maximum temperature of 34°C (93°F) and an average of 21°C (70°F), offering the perfect environment for outdoor activities. However, the weather can be slightly variable with a minimum temperature dipping to 9°C (48°F) during cooler nights. While visitors can expect pleasant days, precipitation is not uncommon, with approximately 61 mm (2.4 in) of rain over an average of 6 days, leading to vibrant greenery and a refreshing atmosphere. With a humidity level around 65%, the warmth of the sun combined with the coastal breeze provides an inviting tropical feel, making December a magical time to explore this beautiful destination.
In December, Piriapolis, Uruguay, begins to embrace the warmth of summer, with temperatures showcasing a vibrant transition. The month typically sees minimums around 9°C (48°F) and averages hovering at 21°C (70°F), making it pleasant for both locals and visitors. The maximum temperature can reach up to 34°C (93°F), promising plenty of sunny days ideal for beach activities. Compared to previous months, December marks a noticeable rise in temperatures, setting the stage for an inviting summer atmosphere. As the landscape flourishes under the sun, residents and tourists alike can revel in the outdoor charm that Piriapolis has to offer.
In Piriapolis, Uruguay, December ushers in the summer season with a modest precipitation total of 61 mm (2.4 in), marking it as one of the drier months of the year. Over the course of six days, rain gently falls, often refreshing the coastal landscape without overwhelming it. This trend of lower precipitation in December stands in contrast to the wetter months that follow, such as June and July, which see amounts exceeding 100 mm. Despite the light rainfall, December offers a vibrant atmosphere, leaving room for beachgoers to enjoy Piriapolis' stunning shoreline under relatively clear skies. The pattern of intermittent showers complements the festive spirit of the season, making it a charming time for locals and visitors alike.
In Piriápolis, Uruguay, December marks a slight decline in humidity levels, averaging 65%. This reduction comes after a peak in April, where humidity reaches 79%, creating a moist atmosphere that persists into the cooler months. As the year progresses toward the summer, humidity gradually decreases, despite an increase during the transitional months of March and May. The trend highlights a seasonal ebb and flow, with December providing a respite from the higher humidity levels felt earlier in the year, making it a more comfortable time for visitors and locals alike to enjoy the coastal beauty and vibrant culture of this charming destination.
In Piriapolis, Uruguay, the UV Index reaches its peak in December, mirroring the trends of January and February with an extreme rating of 14, and a rapid burn time of just 10 minutes. This consistent level of intensity signifies a summer sun that poses a high risk for unprotected skin. Trailing closely behind, November also showcases an extreme UV Index of 13, while the fall months—April through September—experience a gradual decline with high to moderate ratings, emphasizing a safer window for outdoor activities. As the year progresses, the UV Index fluctuates, but December stands out for its notable intensity, urging visitors and locals alike to prioritize sun protection. For more detailed insights, visit Piriapolis UV Index.
UV Risk Categories
With 387 hours of sunshine, December in Piriápolis, Uruguay, shines as the month with the most sun, marking a radiant start to summer. This trend of increasing daylight hours is particularly noticeable as the year winds down, with each month leading up to December showing a steady growth in sunshine. In contrast to the cooler months of June and July, which barely scraped over 200 hours, the month of November sees a significant leap to 343 hours, effectively setting the stage for a sun-soaked December. This delightful accumulation of sunlight not only invites beachgoers to embrace the warmth but also highlights the vibrant charm of Piriápolis as it basks in the peak of summer's glow.
In Piriápolis, Uruguay, the month of December brings a promising 64% chance of sunny weather, making it an inviting time for outdoor activities and beach outings. This statistic is particularly uplifting compared to the cooler months of winter, where the likelihood of sunshine dips below 50%. Interestingly, as the seasons shift from spring to summer, December stands out with a significant increase in sunlit days, mirroring the sunny trends observed in April and October, both of which also showcase high probabilities of sun. With a gradual rise in sunshine starting from November, December serves as a perfect gateway into the warmer summer months, enticing both locals and tourists to soak up the sun.
As December arrives in Piriápolis, Uruguay, the region basks in the splendor of 14 hours of daylight, mirroring the long and sunlit days of January. This peak in daylight marks the culmination of a consistent upward trend that begins in the more temperate months of late spring. Throughout the year, the daylight duration gradually decreases, reaching a low of just 9 hours in June. However, as spring transitions into summer, there is a joyful resurgence that sees daily sunlight climbing back up, creating an inviting atmosphere ideal for outdoor activities and beach outings. Observing this pattern, one can appreciate how the seasonal changes in Piriápolis not only enhance the vibrant landscape but also enrich the experience of residents and visitors alike throughout the year.
In December, the winds in Piriápolis, Uruguay, settle into a gentle rhythm, averaging around 4.0 m/s (9 mph). This slight dip from the breezier months of June and July, which both featured winds at a steady 4.8 m/s (11 mph), signals a transition into the warmer summer months. As the year draws to a close, December's winds are reminiscent of those in earlier months, with January and October closely matching its speed. However, as the holiday season beckons, this moderated breeze complements the region's vibrant coastal charm, creating a perfect backdrop for relaxation and festive celebrations. Overall, the winds of December offer a refreshing yet tranquil atmosphere, making it an ideal time to enjoy the beauty of Uruguay’s picturesque shores.
Weather in Piriapolis varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Piriapolis, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather features a minimum temperature of 9°C (48°F) and can peak at 34°C (93°F), offering an average of 21°C (70°F). The month experiences a total precipitation of 61 mm (2.4 in) over six days, with a humidity level of 65%. In contrast, January sees slightly warmer temperatures, with a minimum of 11°C (52°F) and a maximum reaching 38°C (101°F), resulting in an average temperature of 23°C (73°F). Precipitation also increases to 70 mm (2.8 in) over the same number of rainy days, while humidity remains relatively stable at 63%. For more details on January weather in Piriapolis, you can check Piriapolis weather in January.
In December, the weather tends to be warm with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 34°C (93°F), averaging around 21°C (70°F). Despite this warmth, December experiences relatively low precipitation, with about 61 mm (2.4 in) over 6 days and a humidity level of 65%. In contrast, February offers slightly warmer temperatures, with minimums of 11°C (52°F) and maximums of 33°C (91°F), averaging 22°C (72°F). However, it also brings increased rainfall, accumulating 88 mm (3.5 in) over 10 days, and higher humidity at 69%. For further details, you can check out Piriapolis weather in February.
In December, the weather is generally warm, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 34°C (93°F), averaging around 21°C (70°F). There is an average precipitation of 61 mm (2.4 in) spread over approximately 6 days, and the humidity sits at around 65%.
In contrast, March sees a slightly milder climate, with minimum temperatures around 11°C (52°F) and a maximum of 32°C (89°F), averaging 20°C (69°F). Precipitation increases slightly to 68 mm (2.7 in) over about 8 days, accompanied by higher humidity at 73%.
For more details on March weather, visit Piriapolis weather in March.
In December, the weather tends to be warmer, with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 34°C (93°F), while April experiences a cooler average, peaking at 32°C (89°F) with a minimum of 8°C (47°F). Precipitation is slightly higher in April, with 81 mm (3.2 in) expected over about 7 days compared to December's 61 mm (2.4 in) spread across 6 days. Additionally, April exhibits higher humidity levels at 79%, compared to December's 65%. For a detailed look at conditions, you can check Piriapolis weather in April.
In December, temperatures are generally warmer, with a minimum of 9°C (48°F) and a maximum reaching up to 34°C (93°F), while May sees cooler temperatures, ranging from a minimum of 5°C (41°F) to a maximum of 26°C (79°F). December experiences relatively lower humidity at 65%, compared to May's higher humidity level of 82%. Additionally, rain is more frequent in May, with precipitation occurring over 8 days and totaling 84 mm (3.3 in), while December has 6 days of rain and 61 mm (2.4 in) of precipitation. For a detailed look at the weather in May, you can check Piriapolis weather in May.
December and June present contrasting weather conditions. In December, temperatures range from a mild 9°C (48°F) at night to a warm 34°C (93°F) during the day, with an average of 21°C (70°F). Precipitation is relatively low, with about 61 mm (2.4 in) falling over six days, and humidity sits at a comfortable 65%. In stark contrast, June experiences cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 25°C (78°F), averaging around 12°C (54°F). This month sees higher rainfall, with 115 mm (4.5 in) over ten days and increased humidity at 80%. For more specific details on June weather, check out Piriapolis weather in June.
When comparing the weather in December and July, it's clear that December is significantly warmer and drier. In December, temperatures range from a minimum of 9°C (48°F) to a maximum of 34°C (93°F), with an average of 21°C (70°F) and only about 61 mm (2.4 in) of precipitation over 6 days. In contrast, July offers cooler temperatures, with a minimum of 2°C (35°F), an average of 11°C (52°F), and a maximum of 26°C (79°F). Additionally, July experiences more rainfall, totaling 103 mm (4.0 in) over 11 days, and higher humidity at 72%. This variation makes December a much warmer and comparatively drier month. For more specific details on July weather in this region, you can check Piriapolis weather in July.
The weather in December tends to be significantly warmer compared to August, with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 34°C (93°F), while August sees much cooler averages between 1°C (34°F) and 25°C (77°F). Additionally, December experiences lesser precipitation at 61 mm (2.4 in) over 6 days, compared to August's 91 mm (3.6 in) spread over 8 days. Humidity levels are slightly lower in December at 65%, whereas August has a higher humidity of 72%. For those interested in more details about the weather in Piriápolis during August, you can check out this link: Piriapolis weather in August.
In December, the weather tends to be much warmer than in September, with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 34°C (93°F), compared to September's milder range of 3°C (38°F) to 27°C (82°F). Additionally, December experiences lower humidity at 65%, while September's humidity is higher at 76%. Precipitation is also higher in September, with 86 mm (3.4 in) over 7 days, compared to December's 61 mm (2.4 in) spread over just 6 days. For more information, check out Piriapolis weather in September.
December weather is generally warmer and more humid compared to October. With minimum temperatures of 9°C (48°F) and maximum temperatures reaching up to 34°C (93°F), December averages a comfortable 21°C (70°F). In contrast, October features cooler temperatures with a minimum of 4°C (39°F) and a maximum of 30°C (86°F), averaging only 16°C (60°F). Additionally, December experiences less precipitation, averaging 61 mm (2.4 in) over 6 days, while October has higher precipitation at 82 mm (3.2 in) across 9 days and slightly higher humidity at 71%. For a more detailed look at October weather, you can check Piriapolis weather in October.
In comparing the weather of December to November, December experiences slightly warmer temperatures, with a minimum of 9°C (48°F) and an average of 21°C (70°F), in contrast to November's minimum of 7°C (45°F) and average of 19°C (66°F). The maximum temperature in December also climbs to 34°C (93°F), whereas November peaks at 33°C (91°F). Both months have similar precipitation levels, with December receiving 61 mm (2.4 in) over 6 days and November 60 mm (2.4 in) over 7 days. However, December's humidity is slightly lower at 65%, compared to November's 68%. For a more detailed look, visit Piriapolis weather in November.
December in Piriapolis ushers in a delightful transition into summer, with warmer temperatures inviting visitors to bask in the sun. The pleasant average temperature of 21°C (70°F) contrasts sharply with the cooler months, making it an ideal time for outdoor activities and beachside relaxation. While occasional rain, with about six days of precipitation, adds to the lush scenery, it’s the increased humidity and warmth that truly set December apart, creating a refreshing atmosphere. For more insights into the climate throughout the year, check out Piriapolis Climate.