December Weather in Riga, Latvia

Last updated: August 21, 2025

December in Riga, Latvia brings a crisp and chilly embrace as temperatures fluctuate between a maximum of 10°C (50°F) and a minimum of -13°C (9°F). The average temperature hovers around 1°C (33°F), creating a wintry atmosphere complemented by a high humidity level of 93%. The city experiences a notable precipitation of 59 mm (2.3 in) over the month, with 15 days marked by rainfall or snow. As the festive season approaches, Riga's December weather paints a picturesque scene ideal for cozy gatherings and exploring the city’s enchanting winter charm.

December Temperature in Riga

In December, Riga, Latvia, experiences a distinct chill as winter sets in, with temperatures often dipping to a minimum of -13°C (9°F). The average temperature hovers around 1°C (33°F), signaling the nearing peak of the cold season. Daytime highs typically reach around 10°C (50°F), offering a stark contrast to the frigid nights. This month marks the transition into the coldest part of the year, a gradual decline from the milder conditions of late autumn. As December progresses, the city embraces a winter wonderland atmosphere, making it an enchanting time to explore Riga's festive decorations and cozy cafés, despite the brisk temperatures.

December Weather in Riga: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Riga, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riga, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec313035435263666457494133
Data source: Temperature data for Riga generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Riga

In December, Riga experiences a notable shift in its weather patterns, with an average precipitation amount of 59 mm (2.3 in), making it a relatively wet month as winter sets in. This precipitation is spread across approximately 15 days, suggesting that while the month is not excessively rainy, light snow or drizzle can often punctuate the chill. When compared to the previous months, December sees a moderate drop from the heavier rains of October and November, which recorded 92 mm (3.6 in) and 69 mm (2.7 in) respectively. This trend indicates a transition towards drier conditions as temperatures fall, potentially leading to a picturesque winter landscape framed by soft snow rather than persistent rainfall. Overall, December in Riga presents a unique blend of winter charm and the final vestiges of autumn's wetter vibes.

December Precipitation Trends in Riga

The chart displays monthly precipitation patterns in Riga, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Riga, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec483950405358848692926959
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Riga

In Riga, Latvia, December sees the humidity rise to a notable 93%, mirroring January's levels and wrapping up a year characterized by consistently high moisture in the air. The year begins with January's peak humidity of 93%, gently tapering to 72% in May, before gradually climbing back towards the end of the year. From October's 91% to December, the air becomes markedly more humid once again, reflecting the city's damp winters. The trend highlights Riga's climate as becoming increasingly moisture-laden as winter settles in, creating a distinctive, chilly ambiance that characterizes this Northern European capital.

December Average Humidity in Riga

This chart illustrates the average monthly humidity levels in Riga, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Riga is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%91%90%87%72%76%76%80%87%91%92%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Riga

In December, Riga, Latvia experiences a low UV Index of 1, mirroring conditions seen in both January and November. With a burn time of 45 minutes under these limited UV rays, residents and visitors can enjoy outdoor activities with minimal sun protection concerns. This pattern of low UV exposure persists throughout the winter months, providing a stark contrast to the more intense UV levels observed in the spring and summer. As days grow shorter and colder, it's essential to remain mindful of the sun's effects, even during the chill of December. For more about sun safety and local UV levels, explore Riga UV Index.

Maximum UV Index Levels in Riga for December

The chart shows the monthly maximum UV Index (UVI) for Riga in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Riga typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567764211
Data source: Riga December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

December Sunshine in Riga

In Riga, Latvia, December marks the beginning of winter's chill, and the sun seems to take a short hiatus, with only 79 hours of sunshine gracing the city. This starkly contrasts with the gradual upward trend of daylight hours as the year progresses. Starting from a mere 81 hours in January, the sunlight gradually builds to a peak in late spring and early summer, reaching an impressive 463 hours in June. However, as the days shorten in the latter part of the year, the sunshine dips significantly, plummeting from 311 hours in September to 124 hours in November. As December arrives, the trend continues downward, illustrating the fleeting nature of sunlight in the Latvian winter, a precursor to the vibrant light that will return with the arrival of spring.

Monthly Sunshine Duration in Riga: December Highlighted

The December sunshine duration represents the total number of hours Riga experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec81h169h269h356h444h463h460h394h311h232h124h79h
Data source: Riga December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Riga During December

When exploring the likelihood of sunny weather in December in Riga, Latvia, it’s important to note a clear trend in the monthly sunshine chances. December exhibits a modest 19% chance of sun, slightly lower than its chilly predecessors, November and October, which report 20% and 36% respectively. As the year progresses from the bright summer months of June and July, where the chances spike to 60% and 50%, we see a decline in sunlight likelihood as winter approaches. This seasonal shift highlights December as part of the cloudier months as daylight wanes, making sunny days a rare but delightful occurrence amidst the winter chill.

Percentage of Sunny Days in December in Riga

The chart illustrates the percentage of sunny days in Riga throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Riga experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec7%23%33%39%35%60%50%29%29%36%20%19%
Data source: Riga December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Riga in December

In Riga, Latvia, the December daylight duration marks the zenith of winter's embrace, with the city basking in just 6 hours of daylight. This is a stark contrast to the bright summer months, where June and July enjoy an ample 17 hours of sunlight. As the year unfolds, daylight gradually diminishes from the 16 hours in May, dipping into the shorter days of autumn with 10 hours in October, and continuing its descent through November's 8 hours. By the time December arrives, the challenge of shorter days is palpable, reminding residents of the vibrant transition from the lively springs to the dimming winters, creating a poignant rhythm of light that shapes the seasonal experience in this Baltic gem.

Average Daylight Hours in Riga for December

The chart illustrates the variation in daylight duration in Riga throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 30m9h 29m11h 52m14h 19m16h 30m17h 43m17h 4m15h 4m12h 42m10h 17m8h 4m6h 50m
Data source: Riga daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Riga

As December arrives in Riga, the city experiences a significant shift in wind dynamics, with an average wind speed of 5.3 m/s (12 mph). This gentle yet invigorating breeze follows a trend of steadily increasing winds as the year closes, peaking with October’s 5.7 m/s (13 mph). While the summer months enjoyed calmer winds, December’s gusts are reminiscent of early autumn, providing a brisk contrast to the milder conditions of June and July. As winter sets in, the winds not only invigorate the city’s landscape but also signal the approach of colder days, inviting locals and visitors alike to bundle up and embrace the unique charm of Riga’s frigid yet picturesque winters.

Average December Wind Speed in Riga

The chart displays monthly wind speed patterns in Riga, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.94.75.15.04.53.43.94.85.15.75.55.3 m/s
Data source: Riga December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Riga Compares to Other Months

Weather in Riga varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Riga, focusing on differences in temperature, rainfall, humidity, and UV levels.

In December, the weather in Riga experiences a relatively mild average temperature of 1°C (33°F), with highs reaching up to 10°C (50°F). However, the month is marked by significant rainfall, accumulating to 59 mm (2.3 in) over approximately 15 days, contributing to a high humidity level of 93%. In contrast, January sees a drop in temperatures, with averages falling to -1°C (31°F) and minimums dipping to -19°C (-1°F). The precipitation amount slightly decreases to 48 mm (1.9 in) across about 12 days, while humidity remains constant at 93%. For more detailed information, you can check out Riga weather in January.

In December, temperatures in Riga average around 1°C (33°F), with a noticeable chill as the month experiences minimums dropping to -13°C (9°F). The weather is characterized by higher precipitation, totaling 59 mm (2.3 in) across 15 days, and a humidity level of 93%. In contrast, February sees slightly colder temperatures, with average lows of -1°C (30°F) and minimums reaching as low as -17°C (1°F). Precipitation decreases to 39 mm (1.5 in), spread over only 9 days, and humidity remains moderately high at 91%. For further details, check out Riga weather in February.

December and March exhibit notable differences in weather patterns. While both months average around 1°C (33°F), December tends to be milder with maximum temperatures reaching up to 10°C (50°F), compared to March, where the maximum is slightly higher at 12°C (54°F). However, March begins with colder minimum temperatures plunging to -18°C (0°F), which is lower than December's minimum of -13°C (9°F). In terms of precipitation, December receives a bit more with 59 mm (2.3 in) over 15 days, while March has 50 mm (2.0 in) spread across 12 days. Humidity levels are slightly higher in December at 93%, compared to March's 90%. For more detailed insights, you can check Riga weather in March.

When comparing the weather in December and April, there is a noticeable shift in temperature and precipitation. December experiences temperatures ranging from a frigid -13°C (9°F) to a maximum of 10°C (50°F), with an average of 1°C (33°F). This month also sees a higher level of precipitation, totaling 59 mm (2.3 in) over approximately 15 days, coupled with high humidity at 93%. In contrast, April brings a milder climate, with temperatures varying from a low of -5°C (23°F) to a warm high of 22°C (71°F) and an average of 6°C (43°F). The rainfall is less intense at 40 mm (1.6 in), occurring over just 9 days, and the humidity decreases slightly to 87%. The transition from December to April marks a significant warming trend, heralding the arrival of spring. For more detailed insights on April weather, you can visit Riga weather in April.

December and May present remarkably contrasting weather conditions. In December, temperatures plunge with a minimum of -13°C (9°F) and an average of just 1°C (33°F), reaching a maximum of 10°C (50°F). The month is characterized by high humidity at 93%, and precipitation occurs on about 15 days, totaling 59 mm (2.3 in). In stark contrast, May boasts a more temperate climate, with temperatures ranging from a minimum of 1°C (33°F) to a pleasant maximum of 26°C (79°F), and an average temperature of 11°C (52°F). The humidity decreases significantly to 72%, and rainfall is slightly lower at 53 mm (2.1 in) over 10 days. For a closer look at the delightful weather in May, explore Riga weather in May.

December and June present stark contrasts in weather. In December, temperatures plummet, with lows averaging -13°C (9°F) and a chilly maximum of 10°C (50°F), coupled with high humidity levels at 93%. Precipitation is frequent, occurring on 15 days, totaling 59 mm (2.3 inches). In contrast, June brings a much milder climate, where temperatures range from a minimum of 7°C (45°F) to a maximum of 31°C (88°F) with an average of 17°C (64°F). Although the precipitation is similar at 58 mm (2.3 inches), it falls over fewer days—just 10—resulting in a more pleasant overall atmosphere and lower humidity at 76%. For a detailed view of June weather, check out Riga weather in June.

December and July present contrasting weather patterns. In December, temperatures can plummet to a minimum of -13°C (9°F), with an average temperature of just 1°C (33°F) and a maximum of 10°C (50°F). The month is characterized by high humidity at 93% and 15 days of precipitation, totaling 59 mm (2.3 in). Conversely, July boasts a much warmer climate, with temperatures ranging from a minimum of 11°C (52°F) to an average of 19°C (66°F) and a peak of 31°C (88°F). Although July experiences slightly higher precipitation at 84 mm (3.3 in) over 13 days, the humidity is notably lower at 76%, making it feel more comfortable. For more details about weather conditions during this summer month, you can refer to Riga weather in July.

December and August present stark contrasts in weather. In December, temperatures range from a chilling -13°C (9°F) to a maximum of 10°C (50°F), with an average around 1°C (33°F). The month is marked by high humidity at 93% and 59 mm (2.3 in) of precipitation over 15 days. In contrast, August offers a much warmer climate, with temperatures varying from a minimum of 9°C (48°F) to a comfortable maximum of 30°C (86°F), averaging 18°C (65°F). While August sees slightly higher precipitation at 86 mm (3.4 in) over 13 days, the humidity is lower at 80%. For more details on August weather, visit Riga weather in August.

December and September in Riga present contrasting weather patterns. In December, temperatures can plunge as low as -13°C (9°F), with an average around 1°C (33°F) and a maximum of 10°C (50°F). With 59 mm (2.3 in) of precipitation over 15 days and a high humidity level of 93%, December feels quite cold and damp. In contrast, September enjoys milder conditions, with minimum temperatures of 4°C (40°F) and maximums reaching 26°C (79°F), resulting in an average of 14°C (58°F). Although September receives slightly more precipitation at 91 mm (3.6 in) over 14 days, the lower humidity of 87% generally creates a more comfortable atmosphere. For an in-depth look at what to expect, check out Riga weather in September.

In comparing the weather patterns of December and October, there is a notable shift in temperature and precipitation. December experiences a colder climate with average temperatures hovering around 1°C (33°F) and minimums plummeting to -13°C (9°F), while October boasts milder temperatures, ranging from a minimum of -1°C (31°F) to a maximum of 19°C (66°F). Precipitation levels are higher in October, with 92 mm (3.6 in) recorded over 16 days, compared to December's 59 mm (2.3 in) across 15 days. Humidity remains relatively high in both months, with December at 93% and October at 91%. For a more detailed look at October's weather in Riga, you can view Riga weather in October.

December experiences colder temperatures compared to November, with average highs of just 1°C (33°F) compared to November's 5°C (41°F). The minimum temperatures in December drop significantly to -13°C (9°F), while November remains milder at -7°C (20°F). Although both months see a similar number of days with precipitation (15 days), December records slightly less rainfall at 59 mm (2.3 in) compared to November's 69 mm (2.7 in). Humidity levels remain high in both months, at 93% in December and 92% in November. For more detailed information, visit Riga weather in November.

Compare Riga's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Riga

As December descends upon Riga, the city's weather transforms dramatically, ushering in a crisp chill that sets it apart from the milder months preceding it. With average temperatures hovering around 1°C (33°F) and the potential for frigid lows of -13°C (9°F), December is undeniably one of the coldest times of the year. The increase in humidity to a notable 93% contributes to that sharp bite in the air, while the city experiences about 15 days of precipitation, making it crucial to be prepared for unexpected rain or snow. This stark contrast to earlier months, combined with the enchanting festive atmosphere, offers a unique charm that is quintessentially Riga. For a deeper dive into the city's weather trends throughout the year, visit Riga Climate.