Last updated: April 22, 2025
In December, St. John's, Canada experiences a dramatic shift in weather, showcasing a maximum temperature of 15°C (59°F) and an average of 0°C (33°F). The chill ultimately leads to a minimum dip of -10°C (15°F). This month is characterized by significant precipitation, amassing 133 mm (5.3 in) over approximately 16 days, which contributes to the region's high humidity level of 83%. As winter settles in, residents and visitors alike should prepare for a blend of mild and frigid temperatures, coupled with an abundance of wet days.
In St. John's, Canada, December ushers in the heart of winter with temperatures that reflect a steady chill. The month starts off with nightly lows dipping to around -10°C (15°F), while daytime highs reach up to a mild 15°C (59°F). The average temperature hovers at 0°C (33°F), marking a notable transition from the more moderate fall months. As the last month of the year unfolds, residents experience a crispness in the air that invites cozy gatherings and festive cheer. While December temperatures remain on the cooler side, they are surprisingly mild compared to the frigid conditions of January and February that follow, showcasing the unique climate patterns of this picturesque coastal city.
In December, St. John's, Canada, experiences a notable increase in precipitation, with 133 mm (5.3 in) of rain and snow recorded over 16 days. This marks the highest monthly total for precipitation in the year, surpassing November's 108 mm. The trend towards increased moisture in December signals a transition into winter, as the city embraces the season with chilly winds and longer precipitation spells. The frequent rain and snow during this month contribute to the region's lush landscapes, while also emphasizing the need for warm clothing and cozy indoor activities. As days shorten and winter sets in, the weather plays a crucial role in shaping the vibrant atmosphere of St. John's during the holiday season.
December in St. John's, Canada, sees a humidity level of 83%, which marks a slight decline from the preceding months. As autumn transitions into winter, humidity levels peak from June through August, reaching a high of 94% in July. This trend reveals a steady increase in moisture as spring gives way to summer, culminating in a damp August. However, as the year winds down, humidity gradually decreases, dipping to 84% in November and stabilizing at 83% in December. This ebb and flow creates a unique atmospheric rhythm, characteristic of St. John's coastal climate.
In December, St. John's, Canada experiences a low UV Index of 1, marking a noticeable dip from the previous months. This low level indicates a safe time for outdoor activities with a burn time of 45 minutes, allowing residents to enjoy the crisp winter air without the urgency of sun protection. As the year progresses from January's index of 2 to November's 2, there is a clear trend of reduced UV exposure in the winter months. It's essential to remember, however, that even low levels can lead to skin damage with prolonged sun exposure. For a comprehensive understanding of how UV levels vary throughout the year, check out the St. John's UV Index.
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In St. John's, Canada, December brings a crispness to the air with a modest 103 hours of sunshine. This marks a notable decline from the sun-drenched days of summer, where August boasts a peak of 306 hours. The transition into winter is evident as daily sunlight diminishes, following the trend of shorter days and cooler temperatures. Despite this drop, December's sunshine is a charming prelude to the vibrant festivities of the holiday season—a time where the twinkling lights create their own warmth against the wintry backdrop. As the year closes, the town reflects on a gradual increase in daylight that began in the spring, reminding residents that brighter days are ahead in the New Year.
In St. John's, Canada, the likelihood of sunny weather in December stands at 25%, slightly lower than the preceding months, with November boasting a 30% chance of sunshine. This seasonal dip is part of a broader trend, as the town often experiences enhanced sunlight in the spring and early fall, peaking at 38% in September. December's weather showcases a transitional phase, where the festive cheer meets the cold embrace of winter, making those rare sunny days all the more cherished. As the months progress, the overall trend highlights the gradual increase in sunshine from the dismal January and February, creating a sense of hope as the year draws to a close.
In St. John's, Canada, December marks a return to shorter daylight hours, with only 8 hours of sunlight each day. This decline follows the gentle increase from the depths of winter in January, where daylight starts at its shortest, creeping up through February and gradually expanding into longer, brighter days by April. The peak occurs in summer, with a robust 15 hours of daylight between June and August, creating a stark contrast to the dim, wintry December days. As the year progresses, the days shorten again in autumn, leading to a nostalgic return to the more tranquil, twilight-filled evenings of late fall and early winter. Thus, the cycle of daylight in St. John's beautifully illustrates the rhythm of the seasons, enhancing both the charm and challenges of living in this coastal city.
In December, the winds in St. John's pick up noticeably, with an average speed reaching 7.2 m/s (16 mph), making it one of the gustiest months of the year. This increase from the preceding months signals the transition into winter, as winds typically peak during this time. November already showed a robust average of 6.0 m/s (14 mph), hinting at the seasonal shift, but December's winds push the pace further. While the summer months of July and August experience some of the calmest breezes, averaging around 4.7 m/s (11 mph), the closing month of the year winds down with invigorating gusts, reminding residents of the lively energy that winter can bring to this beautiful coastal city. The trend shows that as the year progresses into its final chapter, the breezes become bolder, setting the stage for the charm of a chilly St. John’s winter.
The weather in St. John's changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in St. John's and find detailed weather information for every month.
December weather typically features a broad temperature range with lows reaching -10°C (15°F) and highs up to 15°C (59°F), resulting in an average temperature of around 0°C (33°F). This month also sees significant precipitation of 133 mm (5.3 in) over 16 days. In contrast, January tends to be chillier, with minimum temperatures dropping to -14°C (7°F) and an average of -2°C (29°F). While the maximum temperature is slightly lower at 12°C (54°F), January experiences slightly less precipitation at 113 mm (4.5 in) over 13 days. Both months maintain a consistent humidity level of 83%. For more details on the specific conditions in January, you can check the St. John's weather in January.
December and February present distinct weather characteristics, reflecting the transition from late autumn to mid-winter. In December, temperatures range from a chilly -10°C (15°F) to a milder 15°C (59°F), averaging around 0°C (33°F). The month is quite wet, with 133 mm (5.3 in) of precipitation falling over 16 days and humidity lingering at 83%. In contrast, February is generally colder, with temperatures dipping to a minimum of -16°C (3°F) and peaking at 10°C (50°F), averaging -3°C (26°F). Precipitation decreases to 102 mm (4.0 in) over 12 days, while humidity remains slightly higher at 84%. For a detailed look at St. John's weather in February, you can find more information.
In December, temperatures in St. John's range from a minimum of -10°C (15°F) to a maximum of 15°C (59°F), with an average of around 0°C (33°F). The month experiences significant precipitation, totaling 133 mm (5.3 in) over 16 days, and maintains a humidity level of 83%. In contrast, March sees slightly cooler conditions, with minimum temperatures dipping to -14°C (8°F) and averaging -2°C (29°F), while the maximum only reaches 13°C (55°F). Precipitation is also lower in March, accumulating to 100 mm (3.9 in) over 13 days, with humidity slightly higher at 85%. For more detailed insights, check out St. John's weather in March.
December and April present a contrasting weather experience despite their overlapping temperature ranges. In December, temperatures can drop to a minimum of -10°C (15°F), with an average of 0°C (33°F) and a maximum of 15°C (59°F). The month is characterized by significant precipitation, averaging 133 mm (5.3 in) over 16 days, combined with a high humidity level of 83%. In contrast, April sees slightly milder conditions with a minimum temperature of -6°C (22°F) and an average of 2°C (36°F), while still peaking at 15°C (60°F). This month receives less precipitation, totaling 103 mm (4.0 in) across 14 days, and the humidity rises to 88%. For a more detailed look at April weather, visit St. John's weather in April.
When comparing the weather of December and May, a stark contrast emerges. December experiences much colder temperatures, with a minimum of -10°C (15°F) and an average of 0°C (33°F), while May enjoys milder conditions, ranging from a minimum of -3°C (27°F) to an average temperature of 5°C (41°F). Precipitation also differs, with December receiving 133 mm (5.3 in) over 16 days compared to May's 80 mm (3.1 in) over 12 days. Additionally, December has a humidity level of 83%, slightly lower than May's higher humidity of 90%. For more about the delightful spring weather in St. John's, you can check St. John's weather in May.
The weather in December contrasts sharply with that of June, showcasing the distinct seasonal differences. In December, temperatures can drop as low as -10°C (15°F), averaging around 0°C (33°F) and peaking at 15°C (59°F). This month experiences considerable precipitation, with about 133 mm (5.3 in) falling over roughly 16 days, and the humidity hovering at a relatively high 83%.
In contrast, June brings a milder climate, with minimum temperatures starting at 0°C (33°F) and averaging 10°C (51°F), peaking at a comfortable 24°C (75°F). Precipitation decreases to 86 mm (3.4 in), occurring over 12 days, while humidity levels increase slightly to 91%. For a detailed look at the warmer month, check out St. John's weather in June.
December and July present a stark contrast in weather conditions. In December, temperatures can drop as low as -10°C (15°F), with average temperatures around 0°C (33°F) and maximums reaching 15°C (59°F). The month is also characterized by higher precipitation, totaling 133 mm (5.3 in) over 16 days, and relatively high humidity at 83%. In contrast, July brings milder and more pleasant conditions, with minimum temperatures of 6°C (43°F), an average of 15°C (58°F), and a maximum of 25°C (76°F). Precipitation is lower in July, amounting to 100 mm (3.9 in) across 10 days, yet the humidity is slightly higher at 94%. For more information, visit St. John's weather in July.
December and August weather in St. John's present stark contrasts. In December, temperatures can dip as low as -10°C (15°F), with an average around 0°C (33°F) and a maximum reaching 15°C (59°F). The month sees significant precipitation of 133 mm (5.3 in) over about 16 days, coupled with a high humidity level of 83%. In contrast, August offers much milder conditions, with temperatures ranging from a minimum of 8°C (46°F) to an average of 17°C (62°F) and a peak of 27°C (80°F). Precipitation is considerably lower at 69 mm (2.7 in) over approximately 10 days, accompanied by a slightly higher humidity of 93%. For more details on this summer month, check out St. John's weather in August.
In comparing the weather between December and September, December presents a much colder climate, with average temperatures hovering around 0°C (33°F) and a minimum that can dip to -10°C (15°F), while September offers a milder range between 4°C (39°F) and a maximum of 24°C (75°F). Precipitation is notably higher in December, with 133 mm (5.3 in) spread over 16 days, compared to September's 107 mm (4.2 in) over 11 days. Additionally, December's humidity sits at 83%, slightly lower than September's 90%, which contributes to the overall chill in the winter month. For more specific details on September's conditions, you can visit St. John's weather in September.
When comparing the weather in December and October, a notable drop in temperatures can be observed. December features a minimum temperature of -10°C (15°F) and averages around 0°C (33°F), while October's temperatures are milder, with a minimum of 0°C (32°F) and an average of 8°C (48°F). Additionally, December sees higher precipitation levels at 133 mm (5.3 in) over 16 days, compared to October's 97 mm (3.8 in) across 12 days. Although December has slightly lower humidity at 83% versus October’s 87%, the significantly colder temperatures make December feel much harsher. For more specific insights into October's climate, you can check St. John's weather in October.
In comparing the weather between December and November, December tends to be colder with minimum temperatures dropping to -10°C (15°F) compared to November’s minimum of -6°C (22°F). The average temperature in December is around 0°C (33°F), while in November it is slightly warmer at 4°C (40°F). While both months experience a decent amount of precipitation, December sees a bit more with 133 mm (5.3 in) over 16 days compared to November's 108 mm (4.3 in) across 13 days. Humidity levels remain fairly similar between the two months, with December at 83% and November at 84%. For more detailed insights on November weather, you can check St. John's weather in November.
As December sweeps into St. John's, the city transforms under a blanket of cold, bringing a distinct chill that sets it apart from the milder months of the year. With average temperatures hovering around freezing and occasional highs reaching up to 15°C, residents experience a significant drop in warmth as winter firmly establishes itself. The month is characterized by increased precipitation, with about half the month seeing some form of rain or snow, resulting in a total accumulation of 133 mm. Coupled with high humidity levels of 83%, the dampness adds an extra layer of crispness to the air. Embrace the unique essence of December and discover how it fits into the broader spectrum of St. John's climate by exploring St. John's Climate.