Last updated: August 21, 2025
In December, Trelew, Argentina, experiences warm and inviting weather, with maximum temperatures reaching up to 38°C (100°F) and an average of 20°C (69°F). The days are typically dry, with only 16 mm (0.6 in) of precipitation spread across just 2 days, contributing to a moderate humidity level of 48%. This blend of warmth and low rainfall makes December an ideal time for outdoor activities and exploring the vibrant landscapes of the region. Prepare for sunny days and pleasant evenings in this beautiful Patagonian city!
In Trelew, Argentina, December marks the beginning of summer, bringing a delightful warmth to the region. The month showcases a comfortable average temperature of 20°C (69°F), with daytime highs reaching up to 38°C (100°F), perfect for outdoor activities. Evenings are pleasantly cooler, with lows around 6°C (44°F), making it ideal for enjoying the vibrant local nightlife without the oppressive heat. This gradual increase in temperatures from the cooler months foreshadows the sizzling summer ahead, positioning December as a month of transition filled with opportunities for adventure and relaxation under the sun.
In Trelew, Argentina, December marks a subtle transition into the summer months with an average precipitation of 16 mm (0.6 in) over two days of rain. This relatively modest amount of rainfall signifies the tail end of a wetter spring, which saw a notable increase to 25 mm in November. As the year progresses, the trend indicates a gradual decline in precipitation from the winter months, peaking in June, which experiences 45 mm (1.8 in) of rain. Meanwhile, the early summer months of December maintain a sense of balance, offering just enough rainfall to support the lush landscapes without overwhelming the region. Overall, December's precipitation, while less than in many preceding months, is consistent with the drier conditions expected as Trelew settles into its summer season.
As December arrives in Trelew, Argentina, a notable decline in humidity levels can be observed, dropping to 48%. This figure marks the lowest point of the year, signaling a shift from the more humid months that precede it. Throughout the year, humidity steadily climbs from 51% in January to a peak of 78% in both July and August. Following this zenith, the trend slowly begins to reverse, with a gradual decrease culminating in the dry December air. This cycle reflects the region's transition from the damp winter months to the drier, warmer summer season, making December a refreshing respite amidst a fluctuating climate.
In December, Trelew, Argentina, experiences a notably high UV Index of 13, categorized as extreme, which mirrors the intensity observed in January. This trend highlights the region's potential for significant sun exposure during the summer months, with a quick burn time of just 10 minutes. Following a gradual decrease in UV levels from February through April, we see a pattern of fluctuating indices, peaking again in November. Luckily, as temperatures drop into the cooler months, the UV Index remains manageable overall. However, for those enjoying Trelew's vibrant outdoor scene, staying informed about the UV Index is crucial for skin protection. For more detailed insights, visit the Trelew UV Index.
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As December rolls in, Trelew, Argentina basks in a radiant 409 hours of sunshine, marking it as the sunniest month of the year. This vibrant glow is a delightful crescendo following the gradual increase in sunlight that starts from the year’s lower averages of 205 hours in June to a remarkable peak in December. The upward trend is evident as the city transitions from the cooler months, with a steady climb in sunshine hours from November's 367 hours, creating an inviting backdrop for outdoor activities and celebrations. Nature's vibrant palette is on full display, making Trelew a captivating destination for those seeking warmth and light during this festive season.
In Trelew, Argentina, the likelihood of sunny weather experiences a notable increase as December approaches, boasting a robust 79% chance of sunshine. This upward trend becomes especially clear when compared to the preceding months, where the probabilities gradually decline from a high of 74% in February to just 48% in May. Following this dip, the sun re-emerges with increasing frequency through the latter half of the year, culminating in December’s bright promise. As the warmth of summer sets in, December not only outshines the previous months but also stands as a definitive peak in sunlit days, making it an ideal time for outdoor activities and enjoying the vibrant landscapes of Trelew.
In Trelew, Argentina, December marks the peak of daylight duration, basking in 15 hours of sunlight, a striking contrast to the shorter days of winter months. As the year progresses, one can observe a distinct trend: daylight steadily increases from 9 hours during the depths of June and July to this summer zenith in December. The gradual transition from autumn to summer showcases a vibrant shift, doubling daylight from a scant 9 hours in May to a generous 14 hours by November. This uplifting trend not only highlights the region's seasonal changes but also invites residents and visitors alike to embrace the extended sunlight of the festive season, perfect for outdoor activities and celebrations.
In December, the wind in Trelew, Argentina begins to pick up a gentle pace, with an average speed of 5.3 m/s (12 mph). This is a continuation of a trend seen throughout the year, where winds are generally stronger in the warmer months. Following October and November, which boast averages of 5.6 m/s and 5.4 m/s respectively, December maintains a similar breeze, reflecting a stable wind pattern that characterizes the region. The consistency of wind speeds, hovering around the 5 m/s range, suggests a serene yet invigorating atmosphere, perfect for outdoor activities and enjoyment of Trelew's picturesque landscape.
Weather in Trelew varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Trelew, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures in Trelew range from a minimum of 6°C (44°F) to a maximum of 38°C (100°F), with an average of 20°C (69°F). The month sees about 16 mm (0.6 in) of precipitation over two days and a humidity level of 48%. In contrast, January experiences slightly warmer conditions, with a minimum of 8°C (47°F) and a maximum of 41°C (106°F), averaging 22°C (71°F). Precipitation is considerably lower at 7 mm (0.3 in) over just one day, and humidity rises slightly to 51%. For more detailed insights, check out Trelew weather in January.
December and February present somewhat similar weather patterns, but with notable differences. In December, temperatures range from a minimum of 6°C (44°F) to a maximum of 38°C (100°F), averaging around 20°C (69°F). The month experiences light rainfall of about 16 mm (0.6 in), typically over two days, with a humidity level of 48%. In contrast, February sees slightly warmer conditions, with a minimum temperature of 7°C (45°F), an average of 21°C (70°F), and a maximum temperature reaching 40°C (104°F). Precipitation decreases to 11 mm (0.4 in) over the same two days, while humidity rises to 54%. For a more detailed look at February's weather, check out Trelew weather in February.
In December, the weather tends to be quite warm with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 38°C (100°F). In contrast, March experiences slightly cooler temperatures, with lows around 5°C (41°F) and highs peaking at 36°C (96°F). December sees minimal precipitation, averaging just 16 mm (0.6 in) over 2 days, while March is notably wetter, with 38 mm (1.5 in) spread over 5 days. Furthermore, March has higher humidity at 62%, compared to December's 48%. For more detailed insights, you can check out Trelew weather in March.
In comparing the weather between December and April, December experiences warmer temperatures, with minimums of 6°C, average highs around 20°C, and maximums reaching 38°C. The humidity in December is relatively low at 48%, and precipitation is minimal, averaging 16 mm over just 2 days. In contrast, April sees cooler temperatures, with minimums dropping to -1°C and daily averages around 15°C, while maximums peak at 33°C. April also presents a slightly higher chance of rain, with total precipitation measuring 20 mm over 3 days and increased humidity at 65%. For more details on the weather in April, you can visit Trelew weather in April.
In December, the weather tends to be much warmer, with average temperatures ranging from a minimum of 6°C (44°F) to a maximum of 38°C (100°F), showcasing the summer heat. The month experiences relatively low precipitation, with just 16 mm (0.6 in) over 2 days and a comfortable humidity level of 48%. In contrast, May ushers in cooler conditions, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 28°C (82°F), creating a refreshing yet crisp atmosphere. While it also records 16 mm (0.6 in) of rainfall, this occurs over 4 days, and the higher humidity level of 71% adds to the springtime feel. For more detailed information, you can check out Trelew weather in May.
December and June present notably contrasting weather conditions. In December, temperatures range from a low of 6°C (44°F) to a high of 38°C (100°F), with an average of 20°C (69°F). The month experiences relatively low precipitation at 16 mm (0.6 in) over just 2 days and a comfortable humidity level of 48%. In stark contrast, June boasts colder temperatures, with minimums dipping to -4°C (24°F) and highs reaching only 21°C (69°F), creating an average of 8°C (46°F). This month also experiences higher precipitation at 45 mm (1.8 in) spread across 4 days, along with increased humidity of 77%. For a closer look at June weather specifics, visit Trelew weather in June.
In December, the weather is considerably warmer, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 38°C (100°F), and an average of 20°C (69°F). This month experiences only 16 mm (0.6 in) of precipitation over about 2 days, accompanied by a moderate humidity level of 48%. In contrast, July brings much cooler conditions, with temperatures dropping to a minimum of -6°C (22°F) and peaking at 20°C (69°F), averaging just 7°C (45°F). The month is slightly wetter, with 17 mm (0.7 in) of precipitation spread over 4 days and higher humidity at 78%. For a more detailed understanding of July weather, you can refer to Trelew weather in July.
When comparing the weather in December and August, distinct contrasts emerge. December features significantly higher temperatures, with an average of 20°C (69°F) and maximums soaring up to 38°C (100°F), whereas August is much cooler, with an average temperature of 9°C (49°F) and a maximum reaching only 25°C (77°F). Additionally, December experiences lower humidity levels at 48%, compared to August's higher humidity of 78%. Precipitation is relatively similar, with December receiving 16 mm (0.6 in) over just 2 days, while August sees 17 mm (0.7 in) spread across 4 days. For more details on August weather, visit Trelew weather in August.
In December, the weather is significantly warmer, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 38°C (100°F), and an average of 20°C (69°F). In contrast, September experiences cooler temperatures, ranging from 0°C (33°F) to a maximum of 31°C (88°F), with an average of 12°C (54°F). While December has slightly more precipitation with 16 mm (0.6 in) over just 2 days, September sees 14 mm (0.5 in) spread over 3 days. Additionally, the humidity in September is higher at 68%, compared to December's 48%. For more details on September's weather, visit Trelew weather in September.
In comparing December and October weather, December is generally much warmer, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 38°C (100°F), while October experiences a much cooler range, with temperatures dipping as low as -1°C (30°F) and peaking at 32°C (89°F). Despite similar precipitation levels, December sees slightly less rainfall at 16 mm compared to 14 mm in October. Interestingly, December has lower humidity at 48% versus October's 60%, contributing to the feeling of warmth during the summer month. For a detailed look at weather patterns in October, you can visit Trelew weather in October.
In December, the weather in Trelew is slightly warmer, with average temperatures reaching 20°C (69°F) compared to November's average of 18°C (64°F). The maximum temperature in December can soar up to 38°C (100°F), just a notch above November's 37°C (98°F). However, December experiences less precipitation, with only 16 mm (0.6 in) over two days, whereas November sees more rainfall at 25 mm (1.0 in) over three days. Additionally, December has a lower humidity level at 48%, while November's humidity stands at 54%. For more details on November weather, check out Trelew weather in November.
December in Trelew marks a significant shift in weather, as temperatures soar, offering a warm embrace that contrasts sharply with the cooler months preceding it. With an average temperature around a pleasant 20°C (69°F), daytime highs can reach an exhilarating 38°C (100°F), making it the hottest month of the year. Although rainfall is relatively sparse, with only about 16 mm (0.6 in) over a couple of days, humidity hovers around 48%, adding to the summer ambiance. This delightful climate not only charms locals but also welcomes tourists eager to experience Trelew's sunny skies. For a complete overview of Trelew's weather, explore Trelew Climate.