December Weather in Haarlem, Netherlands

Last updated: August 27, 2025

In December, Haarlem, Netherlands, experiences a chilly climate characterized by an average temperature of 6°C (44°F). Daytime highs can reach up to 13°C (55°F), while nighttime lows may drop to a brisk -3°C (27°F). The month is marked by significant moisture, with 105 mm (4.1 in) of precipitation over approximately 18 days, contributing to a notably humid atmosphere with humidity levels around 86%. This blend of temperatures and frequent rainfall creates a typical winter setting, perfect for cozy indoor activities and festive holiday cheer in the historic streets of Haarlem.

December Temperature in Haarlem

In Haarlem, Netherlands, December marks the transition into winter, with temperatures starting to dip significantly. The month typically sees minimum temperatures around -3°C (27°F), contrasting with an average temperature of 6°C (44°F) and a maximum that reaches up to 13°C (55°F). While the average temperature remains relatively mild compared to the harsher winter months that follow, there's a noticeable chill in the air, hinting at the cold to come in January and February. This cooling trend from the milder autumn months of November and October sets the stage for a cozy winter atmosphere, ideal for enjoying the city's quaint holiday decor and festivities. With crisp days and chilly nights, December in Haarlem offers a unique charm that invites both locals and visitors to embrace the season’s spirit.

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

The chart illustrates December temperature patterns in Haarlem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Haarlem, 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).
JanFebMarAprMayJunJulAugSepOctNovDec414144485462646560554743
Data source: Temperature data for Haarlem 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 Haarlem

In December, Haarlem experiences a significant uptick in precipitation, with an average of 105 mm (4.1 in) spread across 18 days—making it one of the wetter months of the year. This trend is consistent with the general pattern observed in the autumn months, where precipitation levels heighten, peaking in October. Despite being a cold month, December's rainfall doesn't deter the festive spirit, as the city lights up while residents gear up for the winter season. Although the precipitation days are the highest this month, it beautifully contrasts with the cozy atmosphere of the holiday celebrations, making for a uniquely Dutch winter experience.

December Precipitation Trends in Haarlem

The chart displays monthly precipitation patterns in Haarlem, 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 Haarlem, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec62717143547473999311565105
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Haarlem

In December, Haarlem experiences a notable humidity level of 86%, maintaining a high that is characteristic of the winter months. As the year draws to a close, humidity remains fairly consistent, with only a slight dip from November's peak of 87%. This trend highlights the city's generally humid climate, especially in the colder months, where moisture levels are often higher. Compared to the earlier months of the year, such as May and June, when humidity was at its lowest at 84% and 81% respectively, December's reading underscores a return to the damp conditions typical of Haarlem's winter. While the humidity fluctuates slightly throughout the year, the winter months reliably keep the atmosphere rich with moisture, shaping the city's unique weather patterns and its vibrant seasonal ambiance.

December Average Humidity in Haarlem

This chart illustrates the average monthly humidity levels in Haarlem, 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 Haarlem is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%85%84%82%80%78%83%86%87%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Haarlem

In December, Haarlem enjoys a low UV Index of 1, with a burn time of about 45 minutes—ideal for those looking to soak up a bit of winter sun without the worry of sunburn. This follows a distinct seasonal trend; throughout the year, the UV Index fluctuates significantly as Haarlem transitions from colder months, where the exposure remains low (like January and November), to the summer peak where it soars to 8, indicating very high exposure in June and July. As the year winds down, you'll notice a comforting return to safer levels, making December a perfect time for leisurely outdoor activities without the need for heavy sun protection. To stay informed throughout the year, check the details at Haarlem UV Index.

Maximum UV Index Levels in Haarlem for December

The chart shows the monthly maximum UV Index (UVI) for Haarlem 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 Haarlem typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Haarlem 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 Haarlem

In Haarlem, Netherlands, December ushers in a stark contrast to the sun-soaked days of summer, offering only 133 hours of sunshine. This marks a notable dip from the more radiant months preceding it, such as the sun-drenched July with 423 hours. As the year winds down, sunshine hours steadily decrease from April’s peak of 361 hours, creating a sense of cozy introspection amid the chilly winter atmosphere. Despite the limited sunlight, this December light is a precious gift, illuminating the charming streets of Haarlem and inviting residents to embrace the city's festive spirit. The waning sunlight serves as a gentle reminder to cherish these fleeting days before the sunshine begins its gradual return in January.

Monthly Sunshine Duration in Haarlem: December Highlighted

The December sunshine duration represents the total number of hours Haarlem 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.
JanFebMarAprMayJunJulAugSepOctNovDec114h199h283h361h412h411h423h396h326h239h193h133h
Data source: Haarlem December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Haarlem During December

As the year winds down, Haarlem experiences a notable decline in sunny weather, with December bringing just an 18% chance of sunshine. This marks one of the lowest probabilities of the year, following a gradual reduction from the brighter days of spring and summer. Notably, the likelihood of sun typically peaks in April at 41%, showcasing how the arrival of winter increasingly obscures the skies. As we transition from November's 23% chance of sun to December, it's clear that residents and visitors should brace themselves for overcast days, making those rare sunny moments all the more cherished in this charming Dutch city.

Percentage of Sunny Days in December in Haarlem

The chart illustrates the percentage of sunny days in Haarlem 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 Haarlem experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%27%34%41%35%40%36%36%32%27%23%18%
Data source: Haarlem December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Haarlem in December

December in Haarlem, Netherlands, brings a chilly embrace as daylight wanes to a modest 7 hours. Following a gradual decline from the vibrant 16 hours of summer in June and July, this month marks the year's shortest days, a stark contrast to the longer, sun-drenched months that precede it. As autumn fades, daylight slips from 8 hours in November, and the city settles into the darker days of winter. The trend illustrates the rhythmic shift of seasons, where sunlight quietly retreats, inviting the festive glow of winter celebrations and cozy indoor moments.

Average Daylight Hours in Haarlem for December

The chart illustrates the variation in daylight duration in Haarlem throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 15m9h 54m11h 54m13h 58m15h 46m16h 43m16h 12m14h 35m12h 36m10h 33m8h 43m7h 44m
Data source: Haarlem daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Haarlem

As December sets in, Haarlem experiences a gentle shift in its winds, with an average speed of 5.5 m/s (12 mph) that offers a comforting chill amidst the festive season. This month’s winds show a slight increase compared to the preceding November, where the average was 5.0 m/s (11 mph). While earlier months like June and May welcomed calmer breezes, December’s winds echo the strength of autumn, typically peaking in October at 6.2 m/s (14 mph). As the year wraps up, the crisp air invigorates the atmosphere, reminding residents of the enchanting beauty of winter’s approach in this charming Dutch city.

Average December Wind Speed in Haarlem

The chart displays monthly wind speed patterns in Haarlem, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.85.85.65.35.13.94.45.34.36.25.05.5 m/s
Data source: Haarlem December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Haarlem Compares to Other Months

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

In December, temperatures range from a minimum of -3°C (27°F) to a maximum of 13°C (55°F), with an average of 6°C (44°F). The month experiences considerable precipitation, with 105 mm (4.1 in) falling over 18 days, accompanied by high humidity at 86%. In contrast, January sees slightly colder temperatures, with a minimum of -4°C (26°F) and an average of 5°C (42°F), while the maximum remains at 12°C (55°F). Notably, January has less precipitation, totaling 62 mm (2.4 in) over 13 days, and a marginally higher humidity level of 87%. For a detailed look at weather patterns in January, you can explore Haarlem weather in January.

December and February exhibit distinct weather patterns, with December generally being cooler and wetter. In December, temperatures range from a minimum of -3°C (27°F) to a maximum of 13°C (55°F), with an average of 6°C (44°F) and a substantial precipitation total of 105 mm (4.1 in) over 18 days. In contrast, February experiences slightly colder minimum temperatures at -7°C (19°F), but can reach higher maximum temperatures of 16°C (61°F), with an average of 5°C (42°F). Additionally, February sees less precipitation, totaling 71 mm (2.8 in) over 12 days, and a similar level of humidity at 87%. For more detailed weather insights, check out Haarlem weather in February.

In December, the weather typically features a milder average temperature of 6°C (44°F), with a maximum reaching up to 13°C (55°F) while temperatures can dip to a chilly -3°C (27°F). The month experiences significant precipitation, totaling 105 mm (4.1 in) over 18 days, contributing to high humidity levels of 86%. In contrast, March sees slightly cooler minimum temperatures, dropping to -7°C (19°F), but the average temperature rises to 7°C (44°F) with a maximum of 17°C (63°F). This month is relatively drier, with only 71 mm (2.8 in) of precipitation over 14 days, maintaining the same humidity level of 86%. For more detailed insights on March weather, check out Haarlem weather in March.

In December, the weather is quite chilly with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 13°C (55°F), while April experiences a more moderate climate with temperatures varying from 1°C (34°F) to a pleasant 25°C (77°F). Precipitation is notably higher in December, accumulating to 105 mm (4.1 in) over 18 days, compared to April's 43 mm (1.7 in) over just 10 days. Both months exhibit high humidity levels, with December at 86% and April slightly lower at 85%. For more detailed insights on the weather in April, you can check this resource: Haarlem weather in April.

December and May present distinct contrasts in weather conditions. In December, temperatures can dip as low as -3°C (27°F), with an average temperature of 6°C (44°F) and a maximum of 13°C (55°F). The month is characterized by high humidity at 86% and considerable precipitation, totaling 105 mm (4.1 in) over 18 days. In comparison, May brings a milder climate with minimum temperatures around 4°C (40°F), average temperatures reaching 12°C (55°F), and highs soaring up to 27°C (81°F). The precipitation decreases significantly to 54 mm (2.1 in) over 11 days, and the humidity slightly lowers to 84%. For a closer look at seasonal weather patterns, you can check out the detailed information on Haarlem weather in May.

December and June present quite different weather experiences. In December, temperatures often dip as low as -3°C (27°F), with an average of around 6°C (44°F) and a maximum of 13°C (55°F). The month is characterized by significant precipitation, totaling 105 mm (4.1 in) over 18 days, and a high humidity level of 86%. In contrast, June offers a warmer climate with minimum temperatures of 9°C (48°F) and highs reaching up to 30°C (86°F), resulting in an average temperature of 17°C (62°F). The precipitation is also lighter at 74 mm (2.9 in) over 11 days, and humidity slightly lower at 81%. For those interested in more detailed weather insights, you can explore Haarlem weather in June.

In December, the weather is characterized by much colder temperatures, with a minimum of -3°C (27°F) and a maximum of 13°C (55°F), resulting in an average of 6°C (44°F). The humidity is quite high at 86%, and the region experiences significant precipitation, totaling 105 mm (4.1 in) over 18 days. In contrast, July offers a much warmer climate, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 33°C (92°F), and an average of 18°C (64°F). The humidity is lower at 80%, and while July does see some rainfall, it is considerably less, with 73 mm (2.9 in) over 14 days. For more details, you can check Haarlem weather in July.

December and August exhibit strikingly different weather patterns. In December, temperatures are significantly cooler, with a minimum of -3°C (27°F) and an average of 6°C (44°F), whereas August warms up to a minimum of 11°C (52°F) and can peak at 30°C (87°F). Precipitation levels are similar, with December receiving slightly more at 105 mm (4.1 in) compared to August's 99 mm (3.9 in), but December experiences rain over 18 days, while August sees rain on just 15 days. Additionally, December boasts higher humidity at 86%, compared to 78% in August. For a detailed look at August weather, you can visit Haarlem weather in August.

When comparing the weather in December to September, there is a noticeable difference in temperature and precipitation. December is significantly colder, with average temperatures ranging from a minimum of -3°C (27°F) to a maximum of 13°C (55°F), while September enjoys a milder range from 7°C (45°F) to 27°C (81°F). Additionally, December experiences more days of precipitation, totaling 105 mm (4.1 in) over 18 days, compared to September's 93 mm (3.7 in) over 12 days. Humidity levels are also quite high in December at 86%, slightly above September's 83%. For more detailed information, you can check Haarlem weather in September.

When comparing the weather in December to that of October, December tends to be significantly colder, with average temperatures ranging from a minimum of -3°C (27°F) to a maximum of 13°C (55°F). In contrast, October enjoys milder temperatures with an average range between 4°C (40°F) and 23°C (74°F). Precipitation levels are somewhat similar, with December receiving 105 mm (4.1 in) over 18 days and October experiencing slightly more at 115 mm (4.5 in) across 17 days. Both months share the same humidity level of 86%, but the overall conditions in October feel considerably more comfortable due to its higher temperatures. For a more detailed look at October weather, visit Haarlem weather in October.

December weather is noticeably cooler than November, with average temperatures dropping from 9°C (48°F) in November to 6°C (44°F) in December. The minimum temperatures also fall significantly, with December dipping to -3°C (27°F) compared to November's 0°C (33°F). In terms of precipitation, December is wetter, receiving 105 mm (4.1 in) over 18 days, whereas November sees only 65 mm (2.6 in) across 15 days. Humidity levels remain quite similar, with December at 86% and November at 87%. For a more detailed look at November weather, you can check Haarlem weather in November.

Compare Haarlem's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Haarlem

As December settles in Haarlem, it brings a notable shift from the milder temperatures of the preceding months. The chill in the air is palpable as average temperatures hover around 6°C (44°F), with occasional dips that can plunge to a brisk -3°C (27°F). This month is characterized by higher humidity levels and frequent rain, with 18 days seeing precipitation, leading to a total of 105 mm (4.1 in) of rain. With these conditions, December’s weather invites cozy gatherings indoors, making it a perfect time to enjoy the festive atmosphere. If you wish to explore more about Haarlem's overall climate, check out the detailed section on Haarlem Climate.