Last updated: August 21, 2025
December in Puerto Montt, Chile, brings a unique blend of mild temperatures and significant rainfall. With maximums reaching 23°C (73°F) and an average of 14°C (57°F), the weather is generally pleasant, making it an inviting time for visitors. However, the month also sees 121 mm (4.8 in) of rain over approximately 12 days, contributing to a high humidity level of 82%. This combination of warmth and moisture creates a lush, vibrant environment, perfect for experiencing the stunning landscapes and rich flora of this picturesque coastal city.
In December, Puerto Montt experiences a pleasant transition into summer, with temperatures ranging from a minimum of 6°C (44°F) to a comfortable maximum of 23°C (73°F). The average temperature hovers around 14°C (57°F), providing a delightful backdrop for outdoor activities and exploration. This month marks the start of warmer weather, with a noticeable increase in daytime temperatures compared to the cooler months of July and August, where highs barely reached 15°C (59°F). As the southern hemisphere embraces summer, December’s mild climate invites visitors to enjoy the stunning landscapes and vibrant culture of this charming coastal city. With temperatures rising steadily, it’s the perfect time to soak in the beauty of Puerto Montt before heading into the heat of January and February.
In December, Puerto Montt, Chile experiences a notable transition in precipitation patterns as the rainy season continues to unfold. With an average of 121 mm (4.8 in) of rainfall over 12 days, December sets the stage for the wetter months ahead, although it's still relatively milder compared to the peak months of May and June. This month's precipitation is slightly lower than the previous month, November, which saw 156 mm over 15 days. As the year draws to a close, the consistent rain supports the lush landscapes typical of this region, hinting at the intensity of the wet season that lies just around the corner.
In Puerto Montt, Chile, December experiences a moderate humidity level of 82%, fitting into the region's overall trend of high humidity throughout the year. After reaching its peak in mid-winter with 87% in both July and August, the humidity begins to gradually decrease, though it remains notably high compared to other climates. The transition to December sees a slight dip from the more humid months, yet the conditions remain quite consistent, with only a minor shift from the preceding months of November, which recorded 80%. This consistent moisture is characteristic of Puerto Montt's coastal climate, contributing to its lush landscapes and vibrant ecosystems while keeping the atmosphere pleasantly cool during the summer months.
In December, Puerto Montt experiences a notably high UV Index of 13, placing it firmly in the extreme exposure category with a burn time of just 10 minutes. This marks a continuation of the trend seen throughout the summer months, as both January and February also bear extreme UV levels. The months leading up to December reflect a gradual decline in UV intensity, starting from January's peak of 14 before tapering down to a lower index later in the year. Interestingly, the UV Index remains consistently above moderate starting from September, with a substantial jump observed in November and December. This seasonal pattern underscores the importance of sun safety as the sunny days of summer approach. For more detailed information, visit Puerto Montt UV Index.
UV Risk Categories
December in Puerto Montt, Chile, ushers in a remarkable surge of sunshine, with an impressive 337 hours of bright daylight. This month stands out as the sunniest of the year, marking a vibrant close to the calendar in contrast to the dimmer winter months. As the year progresses, the hours of sunshine typically witness a gradual decline, reaching their nadir in June with just 134 hours. However, as spring transitions into summer, there's a notable revival, with both December and January boasting well over 280 hours each. This illuminating trend paints December not only as a festive capstone to the year but also as a delightful time to bask in the warmth of Puerto Montt's summer sun.
In Puerto Montt, Chile, December offers a promising 52% chance of sunny weather, making it one of the brighter months in a year otherwise marked by variability. This slight uptick in sunshine follows the trend seen from previous months, where the chances of clear skies had begun to dwindle significantly from January's 54% down to the 22% experienced in July and August. As the year transitions into the warmer summer months, December stands out as a hopeful precursor to the sunnier days of January and February, which boast even higher probabilities of sunlight at 54% and 63% respectively. Overall, while December's weather remains somewhat unpredictable, it brings with it a renewed sense of brightness as the year draws to a close.
As the year winds down, Puerto Montt, Chile experiences a delightful increase in daylight during December, basking in approximately 15 hours of sunshine. This trend marks the peak of daylight duration, following a gradual rise from nine hours in the depths of winter months—June through August—to a vibrant 14 hours in November. The transition from the shorter days of autumn to the ample light of December highlights the region's shift into the warmer summer season, inviting longer outdoor adventures and a vibrant atmosphere as the community embraces the sun-filled days ahead.
As December unfolds in Puerto Montt, Chile, the winds pick up slightly, boasting an average speed of 3.9 m/s (9 mph). This increase from the more temperate speeds seen earlier in the year, such as 3.3 m/s in November and 3.4 m/s in March, hints at a seasonal shift. Notably, December's winds mirror the robust gusts of August, marking the return of more energetic breezes as summer approaches. This consistent spring in the wind's step, particularly in the latter months of the year, suggests a lively atmosphere, beckoning residents and visitors alike to embrace the vibrant coastal charm that characterizes Puerto Montt during this time.
Weather in Puerto Montt varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Puerto Montt, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January in Puerto Montt exhibit similar average temperatures, with December seeing a minimum of 6°C (44°F), while January is slightly cooler at a minimum of 5°C (42°F). Both months have comparable average temperatures around 14°C (57°F), though January can occasionally reach a warmer maximum of 25°C (77°F), compared to December's maximum of 23°C (73°F). Precipitation is notably lower in January, with 82 mm (3.2 in) falling over 10 days, compared to December's 121 mm (4.8 in) over 12 days. Humidity levels remain similar, at 82% in December and slightly less at 81% in January. For more detailed insights, check out Puerto Montt weather in January.
In comparing the weather between December and February, we see a notable shift in temperatures and precipitation levels. December experiences a wider temperature range with a minimum of 6°C (44°F) and a maximum of 23°C (73°F), leading to a pleasant average of 14°C (57°F). In contrast, February boasts slightly warmer temperatures, with a minimum of 7°C (44°F) and a maximum reaching up to 32°C (90°F), culminating in an average of 15°C (59°F). Precipitation is also lower in February, totaling 70 mm (2.7 in) over just 7 days, compared to December's heavier rainfall of 121 mm (4.8 in) spread across 12 days. Despite these changes, humidity levels remain similar, with December at 82% and February at 80%. For more detailed information, you can check Puerto Montt weather in February.
When comparing the weather in December and March, both months experience mild temperatures and similar precipitation levels. In December, temperatures range from a minimum of 6°C (44°F) to a maximum of 23°C (73°F), averaging around 14°C (57°F). Precipitation is significant during this time, with 121 mm (4.8 in) recorded over 12 days and humidity at a high 82%. Conversely, March sees slightly cooler temperatures, with a minimum of 5°C (42°F) and a maximum of 25°C (76°F), averaging 13°C (56°F). Precipitation in March is slightly higher at 128 mm (5.0 in), also over 12 days, but humidity is marginally lower at 79%. For more detailed insights about March weather, you can check Puerto Montt weather in March.
In comparing the weather between December and April, we observe some interesting contrasts. December typically sees milder temperatures, with a minimum of 6°C (44°F) and an average high reaching 23°C (73°F), while April offers cooler conditions, with a low of 2°C (36°F) and an average maximum of 21°C (70°F). Precipitation varies as well; December experiences 121 mm (4.8 in) over 12 days, whereas April is notably wetter, with 181 mm (7.1 in) across 14 days. Humidity levels are relatively similar, hovering around 82% in December and 84% in April. For more details on the weather specifics during this month, visit Puerto Montt weather in April.
When comparing December and May weather, December tends to be milder with average temperatures ranging from a minimum of 6°C (44°F) to a maximum of 23°C (73°F). In contrast, May is cooler, with temperatures varying from a minimum of 0°C (33°F) to a maximum of 19°C (67°F). December experiences less precipitation, totaling 121 mm (4.8 in) over 12 days, while May sees significantly more rain, accumulating 278 mm (11.0 in) over 19 days, making it a wetter month. The humidity is slightly higher in May at 86% compared to 82% in December. For more detailed information, you can check Puerto Montt weather in May.
December and June present distinct weather patterns in Puerto Montt. In December, temperatures are milder, with averages ranging from 6°C (44°F) to a maximum of 23°C (73°F). Precipitation is relatively lower at 121 mm (4.8 in) spread over 12 days, and humidity sits at a comfortable 82%. In stark contrast, June experiences cooler temperatures, with a minimum of 0°C (32°F) and an average high of only 15°C (59°F). Additionally, June is much wetter, receiving 337 mm (13.3 in) of rainfall over 22 days and a slightly higher humidity level of 86%. For more details on the June weather, you can check Puerto Montt weather in June.
When comparing the weather in December to that of July, December generally offers milder temperatures, with an average high of 23°C (73°F), compared to July’s maximum of only 14°C (57°F). While December experiences less precipitation, totaling 121 mm over 12 days, July sees significantly heavier rainfall at 240 mm over 20 days, contributing to its higher humidity level of 87%. This substantial rainfall in July can make the atmosphere feel more clammy, even with lower average temperatures. For more details on July conditions, you can check Puerto Montt weather in July.
In December, the weather in Puerto Montt is comparatively milder, with average temperatures ranging from a minimum of 6°C to a maximum of 23°C, resulting in a comfortable atmosphere for outdoor activities. In contrast, August experiences cooler temperatures, with daytime highs averaging around 15°C and lows dropping to 0°C. Additionally, December sees significantly less rainfall, with 121 mm over 12 days, while August is much wetter, receiving 295 mm across 22 days. Humidity levels are slightly higher in August at 87% compared to 82% in December, contributing to a more humid feel during the winter month. For more detailed information, check Puerto Montt weather in August.
When comparing the weather in December and September, December generally presents milder temperatures, with an average of 14°C (57°F) and a maximum of 23°C (73°F), while September is cooler with an average of 9°C (48°F) and a maximum of 19°C (66°F). However, September experiences more precipitation, totaling 173 mm (6.8 in) over 17 days, compared to December's 121 mm (4.8 in) over 12 days. Humidity levels are also slightly higher in September at 85%, compared to December's 82%. For a detailed look at September's weather, you can refer to Puerto Montt weather in September.
In comparing the weather between December and October, December tends to be warmer with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 23°C (73°F), averaging 14°C (57°F). In contrast, October experiences cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 19°C (66°F), averaging just 10°C (50°F). While December has less precipitation at 121 mm (4.8 in) spread over 12 days, October sees more rainfall, totaling 191 mm (7.5 in) over 19 days. The humidity levels in both months remain fairly high, with December at 82% and October at 83%. For a closer look at October's weather specifics, check out Puerto Montt weather in October.
December weather in Puerto Montt is slightly warmer compared to November, with an average temperature of 14°C (57°F), peaking at 23°C (73°F), while November's average is 12°C (54°F) with a maximum of 22°C (72°F). Precipitation decreases from 156 mm (6.2 in) in November to 121 mm (4.8 in) in December, though December still sees rain on about 12 days. Humidity remains relatively high in both months, with December at 82% and November at 80%, contributing to the overall dampness characteristic of the region. For more specifics on November weather, visit Puerto Montt weather in November.
In December, Puerto Montt experiences a pleasant transition into summer, showcasing warm temperatures that often peak at around 23°C (73°F) while maintaining a comfortable average of 14°C (57°F). Unlike the chillier months, the humidity hovers at a notable 82%, and rainfall can be expected on roughly 12 days, summing up to about 121 mm (4.8 in) of precipitation. This shift creates a vibrant atmosphere, making it an ideal time for both locals and visitors to enjoy the stunning landscapes and outdoor activities. For a comprehensive overview of the weather patterns throughout the year, check out Puerto Montt Climate.